Class / Patent application number | Description | Number of patent applications / Date published |
342107000 | Combined with determining distance and direction | 68 |
20080204305 | TARGET TRACKING APPARATUS AND METHOD - On adjusting a target specification data error predicted value so as to become larger on detecting maneuver of a target, the target specification data error predicted value is adjusted, in consideration of type of the maneuver and a course of the target, so as to make a direction of varying specification data large and to make a direction of constant specification data small. It is therefore possible to quickly recover a delay of the following of the varying specification data and to avoid increasing an error of the constant specification data. | 08-28-2008 |
20080272956 | System and Method for Radar Detection of an Object - There is provided a radar system for detection of one or more objects. The radar system comprises a radar wave transmitter for simultaneously transmitting a CW radar signal and a FM-CW or MF radar signal, and a first radar wave receiver for receiving CW and FM-CW or MF radar signals, reflected from one or more objects present in a detection range of the radar system. The system may further comprise a first CW mixer for mixing CW transmission signals and reflected CW signals received by the first receiver, and a first FM-CW or MF mixer for mixing FM-CW or MF transmission signals and corresponding reflected FM-CW or MF signals received by the first receiver. The first CW mixer may be a mixer for mixing CW transmission signals and reflected CW signals received by the first receiver to produce one or more first CW beat signals, each first CW beat signal relating to the velocity of an object, and the first FM-CW or MF mixer may be a first FM-CW mixer for mixing FM-CW transmission signals and reflected FM-CW signals received by the first receiver to produce one or more first FM-CW beat signals relating to the distance to and the velocity of an object. The radar wave transmitter may be adapted for simultaneously transmitting a CW radar signal and a FM-CW radar signal, wherein the FM-CW radar signal is a ramp modulated signal. The radar system may further comprise several radar wave receivers for receiving reflected CW and FM-CW or MF radar signals, which receivers may be arranged along first and/or second receiver directions. The radar system may have means for detecting phase differences between corresponding reflected radar signals received by different radar wave receivers. There is further provided a method of radar detection of one or more objects, where the method comprises simultaneously transmitting a CW radar signal and a FM-CW or MF radar signal, and receiving, via a first radar receiver, reflected CW and FM-CW or MF radar signals reflected from one or more object present in a detection range of the radar system. | 11-06-2008 |
20090015462 | Radar Apparatus and Mobile Object - A signal processing circuit detects, at a plurality of different timing points, a first and a second distance of an oncoming vehicle approaching a vehicle including the radar apparatus and detects a first and a second component of a relative velocity of the vehicle in the radar-apparatus direction. A distance of closest approach of the oncoming vehicle to the vehicle appears when the vehicle and the oncoming vehicle pass each other side by side. The signal processing circuit computes the distance of closest approach on the basis of a formula indicating that a relative velocity given by the first distance, the distance of closest approach, and the first component of a relative velocity in the radar-apparatus direction is equal to a relative velocity given by the second distance, the distance of closest approach, and the second component of a relative velocity in the radar-apparatus direction. | 01-15-2009 |
20090027256 | Radar System Comprising At Least Two Spatially Separated Antenna Units - A radar system comprising at least two spatially separated antenna units, each comprising one antenna. Each antenna unit comprising a signal generator connected to an antenna constitutes a transmitting antenna unit, and each antenna comprising a receiver connected to an antenna constitutes a receiving antenna. At least one receiving antenna unit is arranged for receiving at least one reflected signal, comprising signals transmitted from at least one transmitting antenna unit, having been reflected from at least one object, where the number of antenna units exceeds two. A processing unit is arranged to perform a correlation calculation, comparing at least one received signal with a set of mathematically manipulated copies. From said set, there is only one match for each reflected signal. The present invention also relates to corresponding methods. | 01-29-2009 |
20090073026 | RADAR APPARATUS - A radar apparatus can improve detection performance of a target, obtain high resolution without changing antenna construction, and suppress calculation load. A target detection unit, which calculates a distance, a relative speed, or a direction of the target based on frequency analysis results for a plurality of channels, includes a channel to channel integration unit that integrates, for each of the same frequencies, beat frequency spectra for the plurality of channels in the form of frequency analysis results for beat signals obtained for each of a plurality of receiving antennas, and a direction calculation unit that calculates the direction of the target from the beat frequency spectra for the plurality of channels. | 03-19-2009 |
20090212994 | SYSTEMS AND METHOD FOR DYNAMIC STABILIZATION OF TARGET DATA DETECTED FROM A MOVING PLATFORM - Systems and methods for detecting a present location of a target from a moving platform are provided. One system includes a movement module for estimating the present location of the target, a prediction module for estimating future locations of the target, and a first processor. The first processor is configured to receive present location estimates, receive future location estimates, store the future location estimates to create a first future location estimate, and determine the present location of the target based on the present location estimate and/or the first future location estimate. One method includes receiving an estimate of the present location of the moving platform, receiving an estimate of a future location of the moving platform, and determining the present location of the target based on the estimate of the present location and/or the estimate of the future location. | 08-27-2009 |
20090237291 | Recognition system for vehicle - In a recognition system for a vehicle, forward vehicle information and infrastructural information are checked together and with respect to information that can be considered to pertain to one and the same vehicle. Pieces of information on position and speed are averaged to acquire the information of the vehicle. Pieces of information that can be considered to pertain to one and the same vehicle are searched for and integrated into one. Further, estimated values of speed and position in the future are corrected using traveling information and outputted to a drive assisting device. | 09-24-2009 |
20090322592 | RADAR APPARATUS - A radar apparatus includes a DBF process portion for grouping reception signals over plural channels into plural groups and performing DBF on each group, a summing portion for summing amplitudes or power of frequency components obtained by the DBF performed by the DBF process portion on each group, a peak detecting portion for detecting a peak frequency of a signal of the electric wave reflected by a target from results of the summation at the summing portion, a distance/speed calculating portion for calculating the distance and speed of the target based on the peak frequency, and an angle calculating portion for extracting a frequency component of the peak frequency detected by the peak detecting portion to calculate the angle of the electric wave reflected by the target. Thus, the amount of DBF calculation can be reduced, and a highly accurate positional information of the target can be obtained. | 12-31-2009 |
20100013699 | Vehicular Traffic Surveillance Doppler Radar System - A vehicular traffic surveillance Doppler radar system and method for use of the same are disclosed. In one embodiment, the system comprises a modulation circuit portion for generating modulated FM signals. An antenna circuit portion transmits the modulated FM signals to a target and receives the reflected modulated FM signals therefrom. A ranging circuit portion performs a quadrature demodulation on the reflected modulated FM signals and determines a range measurement based upon phase angle measurements derived therefrom. | 01-21-2010 |
20100117889 | SYSTEM AND METHOD FOR DETECTING PERFORMANCE OF A SENSOR FIELD AT ALL POINTS WITHIN A GEOGRAPHIC AREA OF REGARD - A method for determining a path of travel of an intruder traversing an area of regard (AOR) to a predefined point, where the path of travel has a minimum probability of detection relative to other potential paths of travel of the intruder. The method may comprise: providing three dimensional terrain data concerning the AOR; providing the locations of a plurality of detection sensors implemented in the AOR, with each detection sensor having a known field of view; providing a predetermined single scan detection probability for each of the detection sensors; generating a grid of points that is laid over the AOR; and using the foregoing information to determine a particular path of travel, defined by selected arcs connecting specific ones of the grid of points, of the intruder to the predefined point that represents a minimum probability of detection of the intruder. | 05-13-2010 |
20100271257 | Radar apparatus - To prevent erroneous tracking of a false target, increase reliability of target tracking, enhance continuous tracking of a real target, and thereby prevent erroneous target recognition and improve the recognition accuracy, a target is tracked on the basis of detection information that is included in detection information obtained at a plurality of different measurement time points and is estimated to have resulted from one and the same reflector; tracking reliability indicating a likelihood that a target currently being tracked has resulted from one and the same reflector is determined; and a recognition condition required for recognizing a real target is set according to the tracking reliability or its change. | 10-28-2010 |
20100271258 | RADAR DEVICE - A radar device includes: a signal processor that receives an FMCW signal, detects a peak of a beat signal according to a reception signal and a transmission signal, and performs a correspondence of the beat frequency and an angle measurement process to generate target information; a beat frequency tracking filter that receives the beat frequency and updates a position and a velocity of the target; a pair observation value tracking filter that receives the observation value of the position and the velocity of the target to update the position and the velocity of the target; an integration/selection unit that integrates the tracks of both the tracking filters together or selects one thereof; a system track memory; and an abnormal value determination unit. | 10-28-2010 |
20110001657 | Sensor suite and signal processing for border surveillance - A land-based Smart-Sensor System and several system architectures for detection, tracking, and classification of people and vehicles automatically and in real time for border, property, and facility security surveillance is described. The preferred embodiment of the proposed Smart-Sensor System is comprised of (1) a low-cost, non-coherent radar, whose function is to detect and track people, singly or in groups, and various means of transportation, which may include vehicles, animals, or aircraft, singly or in groups, and cue (2) an optical sensor such as a long-wave infrared (LWIR) sensor, whose function is to classify the identified targets and produce movie clips for operator validation and use, and (3) an IBM CELL supercomputer to process the collected data in real-time. The Smart Sensor System can be implemented in a tower-based or a mobile-based, or combination system architecture. The radar can also be operated as a stand-alone system. | 01-06-2011 |
20110001658 | SYSTEM AND METHOD FOR PRECISION GEOLOCATION UTILIZING MULTIPLE SENSING MODALITIES - A system and method for determining the geolocation of a signal emitter moving at an unknown velocity by combining signal data of a target detection platform (e.g., a radar system) and signal data collected by two or more moving signal collection platforms (e.g., RF signal receivers). In one embodiment, the target detection platform determines tentative location and velocity of the signal emitter, and the signal collection platforms are configured to perform TDOA and/or FDOA analysis of the collected signal data corresponding to a signal of the signal emitter. In one embodiment, solutions provided from the TDOA and/or FDOA analysis are unbiased by using the tentative velocity of the signal emitter, and the geolocation of the signal emitter is determined by matching the TDOA/FDOA solutions and the detected tentative location. | 01-06-2011 |
20110025551 | Burnout time estimation and early thrust termination determination for a boosting target - A system senses the presence of a boosting missile or target and processes the information by comparison of the data with a plurality of predetermined templates of nominal missile characteristics, in order to determine the state of the missile. The processing includes estimation of burnout time and of early thrust termination. Both are determined by generating current stage state estimates including position, velocity, time index error into the thrust template, and motor scale factor error. The change in motor scale factor is compared with a threshold to determine if early thrust termination has occurred. The estimated burnout time of the current stage is calculated from the burnout times of the current and the previous stage processed with the estimated motor scale factor and with state estimates from a filter. | 02-03-2011 |
20110095938 | Vehicular Traffic Surveillance Doppler Radar System - A vehicular traffic surveillance Doppler radar system and method for use of the same are disclosed. In one embodiment, the system comprises a modulation circuit portion for generating modulated FM signals. An antenna circuit portion transmits the modulated FM signals to a target and receives the reflected modulated FM signals therefrom. A ranging circuit portion performs a quadrature demodulation on the reflected modulated FM signals and determines a range measurement based upon phase angle measurements derived therefrom. | 04-28-2011 |
20110109495 | RADAR APPARATUS - The present invention includes: an antenna | 05-12-2011 |
20110128181 | LOCATING SYSTEM BASED ON NOISY TYPE WAVEFORMS - The present invention relates to a system for locating non-cooperating objects by means of a random or pseudo-random noisy type waveform generator, an amplifier, of said waveforms and an antenna which radiates them towards the object, which object generates an electromagnetic echo which is detected by a passive subsystem of antennas and receivers. The time delay and Doppler shift values are determined in the latter subsystem and in turn forwarded from encoding and modulating blocks to a central processor which estimates the position and the speed of the object. The passive subsystem receives, through a transmission channel or storage element, the reference signal which represents the transmitted noisy type waveform and uses it for calculating the bi-dimensional cross correlation (ambiguity function), which permits to estimate the time delay and the Doppler shift. | 06-02-2011 |
20110156947 | ELECTRONIC SCANNING RADAR APPARATUS, RECEIVING WAVE DIRECTION ESTIMATING METHOD, AND COMPUTER-READABLE STORAGE MEDIA STORING RECEIVING WAVE DIRECTION ESTIMATION PROGRAM - An electronic scanning radar apparatus includes a transmission unit configured to transmit a transmission wave, a receiving unit including a plurality of antennas receiving an incoming wave coming from a target, a beat signal generation unit configure to generate beat signals in response to the transmission wave and the incoming wave, a frequency resolution processing unit obtaining complex number data calculated from beat frequencies having signal levels obtained by performing a frequency resolution for the beat signals based on a predetermined frequency width, a peak detector detecting an existence of a present target by detecting peak signal levels of the beat frequencies, a target link unit associating between the present target detected in a present detecting cycle and a past target detected in past detecting cycles; and a direction detecting unit calculating a direction of the incoming wave based on the weighted averaging process. | 06-30-2011 |
20110175767 | RADAR APPARATUS, AND MEASUREMENT METHOD USED IN THE RADAR APPARATUS - The present invention provides a radar apparatus capable of changing a characteristic of filter processing while considering also a relative velocity of an object. A measurement section measures a relative position and a relative velocity of an object such as another vehicle, a pedestrian, and an object placed on a road. The radar apparatus calculates a time until the object and an own vehicle collide with each other, based on the relative position and relative velocity of the object measured by the measurement section, and changes, based on the calculated time, a filter coefficient to be used when filter processing is performed on a measured position converted from the measured relative position of the object, thereby changing a characteristic of the filter processing to be performed on the measured position, between stability and responsiveness. | 07-21-2011 |
20110187582 | TRAVELING DIRECTION VECTOR RELIABILITY DETERMINATION METHOD AND TRAVELING DIRECTION VECTOR RELIABILITY DETERMINATION DEVICE - There is provided a traveling direction vector reliability determination method in which reliability of a traveling direction vector of another vehicle is calculated so as to increase reliability of a collision prediction. The traveling direction vector reliability determination method determines the reliability of the traveling direction vector when the traveling direction vector is calculated based on position coordinate points of a target, which are calculated by a radar device. The method includes a traveling direction vector calculation step of calculating, based on a movement history of the position coordinate points, the traveling direction vector of the target; and a reliability calculation step of calculating, in a case where the position coordinate points include normally recognized coordinate points and estimated coordinate points, the reliability of the traveling direction vector, based on at least one of information about the normally recognized coordinate points and information about the estimated coordinate points. | 08-04-2011 |
20110279305 | METHOD FOR ESTIMATING THE POSITION AND THE SPEED OF A TARGET WITH A RADAR EMITTING AN OFDM WAVEFORM - A method for estimating the position and the speed of a target with a radar is provided. The radar emits a waveform including a train of pulses, each pulse having an OFDM chip constructed from subcarriers, the subcarriers covering the whole bandwidth of the radar. Upon receipt of the echoed pulses, some of the subcarriers are used in a step of Doppler processing, each of the subcarriers being fixed over the pulses. Upon receipt of the echoed pulses, other subcarriers, which are not used for Doppler processing, are used in a step of High Range Resolution processing, the subcarriers being randomly distributed over the pulses. | 11-17-2011 |
20120112951 | RADAR DEVICE - A radar device transmits an electric wave and receives waves reflected by a plurality of objects to generate a received signal, so as to detect a plurality of up frequency peaks and a plurality of down frequency peaks from the received signal and measure characteristic values with regard to the objects at the up frequency peaks and the down frequency peaks. The radar device pairs each of the plurality of up frequency peaks with the down frequency peaks one by one and, with respect to each pair, based on the measured characteristic values, calculates a Mahalanobis distance to determine the pairs whose Mahalanobis distance is smaller than or equal to a predetermined threshold as pairing candidates. The up and down frequency peaks of the determined pairing candidates are used to calculate current data values that include at least one of a distance, relative velocity and angle of the objects. | 05-10-2012 |
20120119938 | FMCW RADAR APPARATUS HAVING PLURALITY OF PROCESSOR CORES USED FOR SIGNAL PROCESSING - A FMCW radar apparatus obtaining information about a target object includes: a transmitter generating a transmission signal of which frequency is modulated based on the FMCW method, the receiver receiving the radar waves reflected at the object, a mixer that generates a beat signal from a mixed signal of the received signal and the transmission signal, and a signal processing unit processing the beat signal to obtain the information including a distance between the own vehicle and the target object, and a relative velocity of the target object. The signal processing unit includes first calculating means and second calculating means, which operate in parallel each other to calculate the information about the object based on the beat signal from an upward-modulation period when the frequency is modulated to be increased and from a downward-modulation period when the frequency is modulated to be decreased respectively. | 05-17-2012 |
20120176267 | OBJECT DETECTING APPARATUS - The judgment accuracy is enhanced to judge whether or not an object is actually exists. An object detecting apparatus includes an acquiring unit which acquires information of the object by means of a radar, an angle detecting unit which detects an angle of the object with respect to a subject vehicle, an extrapolating unit which extrapolates the information of the object, and a judging unit which judges whether or not the object actually exists on the basis of the information of the object acquired by the acquiring unit and the information of the object extrapolated by the extrapolating unit, wherein the judging unit relaxes a condition to judge that the object actually exists when the information, which is extrapolated if an amount of change of the angle is not less than a predetermined amount, is included in the information of the object to be used to judge whether or not the object actually exists, as compared with when the information, which is extrapolated by the extrapolating unit, is not included. | 07-12-2012 |
20120176268 | Vehicular Traffic Surveillance Doppler Radar System - A vehicular traffic surveillance Doppler radar system and method for use of the same are disclosed. In one embodiment, the system comprises a modulation circuit portion for generating modulated FM signals. An antenna circuit portion transmits the modulated FM signals to a target and receives the reflected modulated FM signals therefrom. A ranging circuit portion performs a quadrature demodulation on the reflected modulated FM signals and determines a range measurement based upon phase angle measurements derived therefrom. | 07-12-2012 |
20120200451 | RADAR DEVICE, RADAR RECEIVER, AND TARGET DETECTION METHOD - According to one embodiment, a radar device includes a radio module, a pulse compressor, a Doppler filter processor, a signal processor, an integration processor, an estimation module and a target detector. The radio module receives a plurality of received pulses corresponding to transmission pulses transmitted from a transmitter. The integration processor generates third data by integrating first data generated at the signal processor with second data generated based on first data obtained by a previous scan. The estimation module estimates a position at a time of a next scan based on the third data to generate second data. The target detector detects a target based on the third data. | 08-09-2012 |
20120206289 | AIR DEFENSE SYSTEM ARCHITECTURE COMBINING PASSIVE RADARS AND ACTIVE RADARS - The architecture includes a passive radar using opportunistic transmitters and a plurality of active radars that cooperate in the form of a coalition to assure the surveillance of an area of space. The passive radar and the active radars that form the architecture include means for exchanging information and the passive radar is configured to adopt two alternate operating modes: (i) a “watching” mode in which the passive radar carries out surveillance of the area of space concerned and generates detection information, and (ii) an “on-demand data feed” mode in which the passive radar executes at the request of one or more active radars an object search in a given sector of the area under surveillance or an analysis of certain characteristics of the signal received in a given sector. | 08-16-2012 |
20120212365 | MONITORING A PRODUCTION OR CONVEYOR ENVIRONMENT BY MEANS OF RADAR - A method using an antenna arrangement. The antenna arrangement includes a switched transmission antenna array with a number of transmission antennas, which radiate a radar transmission signal one after the other corresponding to a predetermined switching sequence. A first receiving antenna and a second receiving antenna receive the transmitted radar signals and reflected by at least one radar target. A first set of received signals by the first receiving antenna during the switching sequence of the transmission antenna array; receiving a second set of received signals by the second receiving antenna simultaneously with receiving the first set of received signals by the first receiving antenna during the switching sequence of the transmission antenna array; and from these signals the angular position of the at least one radar target based on the first set and the second set of received signals using an ESPRIT method is determined. | 08-23-2012 |
20120242531 | CALCULATION DEVICE FOR RADAR APPARATUS, RADAR APPARATUS AND CALCULATION METHOD - There is a calculation device for a radar apparatus which is configured to specify a direction of a target based on a reception signal of an antenna. A calculation unit is configured to calculate a relative displacement magnitude in a lateral direction of the target relative to a traveling direction of a moving object having the antenna mounted thereon, from data of the target position-measured by the reception signal while the moving object is moving, and evaluate a relative inclination between a reference axis of a scanning direction of the radar apparatus and a reference axis of the traveling direction of the moving object, based on the displacement magnitude. | 09-27-2012 |
20120268313 | RADAR DEVICE FOR DETECTING AZIMUTH OF TARGET - In a radar device, an azimuth estimating module estimates, when there are a plurality of arrival echo and an angular range between the arrival azimuth of one of adjacent arrival echoes in the plurality of arrival echoes and the arrival azimuth of the other thereof is equal to or smaller than a predetermined azimuth resolution of a plurality of receiving antennas, a virtual azimuth and virtual power for each of first frequency components and second frequency components. The virtual azimuth is within the angular range between the arrival azimuth of one of adjacent arrival echoes in the plurality of arrival echoes and the arrival azimuth of the other thereof, and the virtual power is received power of a virtual arrival echo from the virtual azimuth. | 10-25-2012 |
20120274499 | Radar imaging via spatial spectrum measurement and MIMO waveforms - The proposed MIMO radar imaging method takes advantages of measurement techniques of spatial frequency components of an RF area image from radar returns. To minimize size, weight and power (SW&P), minimum redundancy arrays (MRAs) for both Tx and Rx with unique geometries are proposed. MIMO waveforms are utilized to index the radiated illuminations to a targeted area in the forms of 1-D spatial frequency components. Consequently, the corresponding radar returns from the targeted field of view (FOV) are captured by the Rx MRA. With the knowledge of uniquely designed MRA array geometries, virtual beams are synthesized in Rx processor; usually one Tx and many contiguous Rx fan beams. These virtual beams may be dynamically “moved” to different beam positions. The elongated beam direction for Tx fan beam and that for Rx fan beams are perpendicular to one another. Thus intersections of the Tx fan-beam and many Rx fan-beams are the very areas of radar returns. We refer those areas as virtual beam crosses. Conventional range and Doppler gating processing shall then be applied to the beam crosses concurrently. Radar return pixel-by-pixel within various beam crosses are measured individually. Radar images can then be synthesized. | 11-01-2012 |
20120293358 | RADAR APPARATUS - There is provided a radar apparatus for detecting a target. A detection signal generating unit generates detection signals of the target based on transmission and reception waves of antennas. A detection signal processing unit performs frequency analysis on the detection signals to extract signal components of the target, and performs a predetermined process on the signal components to calculate at least one of a distance to the target, a relative speed to the target, and an orientation of the target. The detection signal generating unit includes a filter unit for giving changes to the detection signals in a frequency bandwidth higher than Nyquist frequency which is a half a sampling frequency. The detection signal processing unit acquires the signal components from the detection signals to which the filter unit gives the changes to determine whether the signal components are generated by replication due to the Nyquist frequency. | 11-22-2012 |
20120293359 | RADAR IMAGING APPARATUS, IMAGING METHOD, AND PROGRAM THEREOF - A radar imaging apparatus includes: (i) a delay code generation unit which repeats, for M scan periods, scan processing of generating, using a transmission code, N delay codes in a scan period for scanning N range gates having mutually different distances from the radar imaging apparatus; (ii) a signal storage unit which stores, in association with a range gate and a scan period, a baseband signal; (iii) a memory control unit which repeatedly writes, in the signal storage unit, for the M scan periods, N demodulated signals corresponding to a single scan period, and reads out a group of M demodulated signals corresponding to mutually different scan periods; (iv) a Doppler frequency discrimination unit which performs frequency analysis on demodulated signals having the same range gate; and (v) a direction of arrival calculation unit which estimates a direction of a target. | 11-22-2012 |
20120306684 | RADAR EQUIPMENT AND RECEIVED DATA PROCESSING METHOD - According to one embodiment, a radar equipment includes a signal processor, a first and second estimation module and an integration module. The signal processor generates first data based on range bin data. The first estimation module estimates a present position of a target based on second data, and shifts the second data to the estimated position to generate third data. The second estimation module estimates the present position based on first data of an n | 12-06-2012 |
20120319888 | OBSTACLE DETECTION APPARATUS - Various targets are detected in a more accurate manner. Provision is made for a receiving antenna part that has a plurality of receiving antennas arranged in a horizontal direction with a part thereof being shifted in a vertical direction from the others, and has a plurality of combinations of the receiving antennas, of which each combination detects an azimuth in the horizontal direction and an azimuth in the vertical direction of a target; and detection means that detects the target a plurality of times while changing the combination of the receiving antennas. The detection accuracy of the target can be enhanced by making a comparison between at least two detection results obtained by the detection means. | 12-20-2012 |
20130016000 | RADAR DEVICE - A radar device capable of removing noise signals before digital conversion and detecting an object with high precision by a simple configuration is provided. In a transmitting RF unit | 01-17-2013 |
20130076558 | MULTI-TARGET DATA PROCESSING FOR MULTI-STATIC AND MULTI-CHANNEL PASSIVE RADARS - The present invention relates to the general field of radar tracking applied to multi-static radar systems. It consists of a method for coherently merging the individual tracks generated from the various bistatic bases that make up the system so as to generate and maintain global tracks so that an object detected by a single bistatic base is represented by the corresponding track and an object detected by a number of bistatic bases and giving rise to the creation of a number of individual tracks is represented only by a single global track. | 03-28-2013 |
20130169471 | CODED APERTURE BEAM ANALYSIS METHOD AND APPARATUS - A method and apparatus for determining the range, radial velocity, and bearing angles of scattering objects reflecting RF signals or for determining the range, radial velocity, and bearing angles of sources RF signals. An array of antenna elements is utilized, the array of antenna elements each having an associated two state modulator wherein transmitted and/or received energy is phase encoded according to a sequence of multibit codes, the multibit codes each having two states with approximately a 50% probability for each of the two states occurring in each given multibit code in said sequence of multibit codes, thereby allowing the determination of range, radial velocity, and bearing angles through digital computation after the scattered signals have been received. | 07-04-2013 |
20130176162 | METHOD AND DEVICE FOR DETECTING A TARGET BY MASKED HIGH ENERGY REFLECTORS - Methods and devices for detecting, in a scene, a first type reflector is provided. The method includes identifying, using a radar in a mobile system, a zone of a distance-radial velocity space that contains a second type reflector. The second type reflector is capable of concealing the first type reflector. The method includes modeling an order two phase shift over time of theoretical first type and second type reflectors. The method includes creating a filter a distance and a radial velocity. The method includes illuminating the scene. The method includes acquiring raw radar data from the echoes reflected by the reflectors of the scene. The method includes obtaining distance profiles. The method includes applying a filter on the distance profiles. The method includes detecting the first type reflector among the second type reflector. | 07-11-2013 |
20130194128 | FLOODLIGHT RADAR SYSTEM FOR DETECTING AND LOCATING MOVING TARGETS IN THREE DIMENSIONS - A floodlight radar system includes a transmitter arranged to generate output waveforms at first and second centre frequencies, and at least one transmit antenna configured to illuminate a search volume constantly at the first and second centre frequencies. A sparse array of receive antennas is arranged in a common plane and configured to monitor the search volume constantly. The system includes a receive circuit arranged to extract target position information from return signals received by each antenna, and a signal processor circuit which is arranged to resolve ambiguity in the position information using a known relationship between calculated Doppler spectra, wavelengths and phase differences at the first and second frequencies, to calculate azimuth, elevation, range and velocity of a target identified in the search volume. The system is able to rapidly detect and locate multiple fast moving targets in three dimensions. | 08-01-2013 |
20130229298 | Threaded Track Method, System, and Computer Program Product - A system, method, and computer program product for determining a trajectory of an item includes segmenting surveillance point data of sensors, by sensor, into track segments for the item, associating the track segments for the item in a segment group for the item, and fusing the track segments in the segment group for the item into a synthetic threaded track for the item. The fusing may include filtering of the track segments for the item across track segments. The filtering across track segments may be based on a weighting of the point track data of the track segments for the item. A system for determining a trajectory of an item may include a processing device configured to execute a threaded track process to convert a data set of surveillance point data into a synthetic threaded track for the item. | 09-05-2013 |
20130241764 | Surveillance and Tracking System and Method - A system for detecting object movement including a sensory network having at least one sensory device using modulated radar for detecting an object in proximity to the sensory network. The sensory network including wireless transmission means and a base station having computer processing means located remote from the sensory network and including wireless transmission means to communicate with the sensory network. The base station having computer readable program code means for causing the computer processing means to analyze data received from the sensory network to determine motion characteristics of the object in proximity to the sensory network. | 09-19-2013 |
20130241765 | SURVEILLANCE AND TRACKING SYSTEM AND METHOD - A system for detecting object movement including a sensory network having at least one sensory device using modulated radar for detecting an object in proximity to the sensory network. The sensory network including a wireless transmission system and a base station having a computer processing system located remote from the sensory network and including a wireless transmission system to communicate with the sensory network. The base station having a computer readable program code for causing the computer processing system to analyze data received from the sensory network to determine motion characteristics of the object in proximity to the sensory network. | 09-19-2013 |
20130335261 | MONITORING DEVICE AND MONITORING METHOD - A monitoring device includes a memory configured to store first and second background information related to positional information of a fixed object existing in a detection area of a radar device that receives a reflected wave from an object existing at an emission destination of an emitted radar wave and detects position and moving velocity information of the object as detection information of the object; and a processor configured to detect, upon receiving a first specified signal, a temporary fixed object existing in a detection area of the radar device by using the detection information and the first background information stored in the memory, and to detect, upon receiving a second specified signal, a movement object existing in the detection area of the radar device by using the detection information and the second background information stored in the memory. | 12-19-2013 |
20140009321 | Methods for Detecting the Flight Path of Projectiles - Methods for detecting the flight path of projectiles involve a sequence of N target detections that include detecting the measured velocities and azimuthal angle bearings of the projectile along the flight path of the projectile by Doppler radar at the times tn, wherein n=1 . . . N, and determining the flight path and the direction of motion of the projectile are from these measurements. The measurements are adapted in a first nonlinear parameter fit to an analytical relationship of the time curve of the radial velocity of the projectile while the projectile passes through the detection range of the radar and so that the absolute projectile velocity, minimum distance of the project flight path from the radar, time at which the projectile passes the point having the minimum distance, flight path direction in azimuth, and flight path direction in elevation can be estimated. | 01-09-2014 |
20140022110 | RADAR DEVICE - A radar device capable of reducing load of a clustering process and improving the tracking performance is provided. | 01-23-2014 |
20140028490 | MOTION PARAMETER ESTIMATING METHOD, ANGLE ESTIMATING METHOD AND DETERMINATION METHOD - A motion parameter estimating method, an angle estimating method and a determination method are provided. The methods are adapted for an electronic device. In the angle estimating method, a first frequency modulation continuous wave signal is first transmitted, and at least one antenna receives a second frequency modulation continuous wave signal resulted by a target reflecting the first frequency modulation continuous wave signal. Multiple motion parameters associated with the target are then obtained according to the first frequency modulation continuous wave signal and the second frequency modulation continuous wave signal. Multiple measured values corresponding to the at least one antenna are obtained according to the motion parameters and configuration parameters of the at least one antenna, respectively. Afterwards, the measured values are substituted into a formula to obtain an estimated angle between a preset direction of the electronic device and the target. | 01-30-2014 |
20140035776 | METHOD AND SYSTEM FOR TARGET DETECTION - A method of detecting a physical target in a region-of-interest is disclosed. The method comprises: transmitting a pulse of radiation into the region-of-interest; receiving an echo signal from the region-of-interest; accessing a computer readable medium storing a dictionary defined over a plurality of dictionary atoms each describing a dictionary function corresponding to at least a time delay and a Doppler shift; calculating a coefficient for each dictionary function using the echo signal, thereby providing a plurality of coefficients, wherein a linear combination of all dictionary functions respectively weighted by the coefficients does not reconstruct the echo signal; and determining at least one of a range and a speed of the target based on the coefficients. | 02-06-2014 |
20140049419 | Method for Classifying Moving Vehicles by Tracking a Position Value of the Vehicle - Method in which vehicles are measured repeatedly while traveling through a radar cone, and specific position values are formed so as to be associated with the measurement times. This can be a specific radial distance or a specific object angle. The change over time is analyzed with respect to a section of discontinuity. The length of this section depends upon the length of the vehicle and makes classification possible. | 02-20-2014 |
20140062760 | SIGNAL PROCESSING DEVICE, RADAR APPARATUS, TARGET OBJECT METHOD - A signal processing device is provided. The device includes an echo signal input unit for receiving echo signals resulted from transmission signals reflected on an object. The transmission signals are transmitted from a transmission source at transmission timings at predetermined time intervals, at least one of the transmission timings shifted from the other timings in time. The device includes a complex reception signal generator for generating complex reception signals, a phase calculator for calculating a phase change amount of the complex reception signals with respect to a reference phase, a phase corrector for phase-correcting the complex reception signals and outputting the corrected signals, and a Doppler processor for performing Doppler processing on the corrected signals and outputting the Doppler-processed signals as Doppler echo signals of the object. | 03-06-2014 |
20140085126 | Dynamic Range Detection and Positioning Utilizing Leaky Wave Antennas - Methods and systems for dynamic range detection and positioning utilizing leaky wave antennas (LWAs) are disclosed and may include configuring one or more LWAs to enable communication of signals in a particular direction. RF signals that are reflected from an object may be received via the LWAs, and a location of the object may be determined based on the received reflected RF signals. The velocity of the object may be determined based on a Doppler shift associated with the received reflected RF signals. A frequency chirped signal may be transmitted by the LWAs to determine a location of the object. A resonant frequency of the LWAs may be configured utilizing micro-electro-mechanical systems (MEMS) deflection. LWAs may be situated along a plurality of axes in the wireless device. The LWAs may include microstrip or coplanar waveguides, where a cavity height is dependent on spacing between conductive lines in the waveguides. | 03-27-2014 |
20140168003 | ANTENNA ARRANGEMENT FOR A RADAR SYSTEM - The invention provides an antenna arrangement for a radar system arranged for coverage of a surveillance area and comprising antenna elements. The antenna elements are arranged to receive a signal transmitted from a transmit antenna of a transmit antenna arrangement and reflected by a target towards the antenna arrangement wherein: • the antenna arrangement comprises at least two non-parallel line arrays, • each antenna element being connected to a receiver where each line array is arranged to create, by using digital beam forming, beams for instantaneous coverage of at least said surveillance area and • within the surveillance area said line arrays are arranged to allow the target position to be limited to one or two crossing areas between at least two beams from different line arrays from which target reflections have been received. The invention also provides a corresponding method and a radar system comprising the antenna arrangement. | 06-19-2014 |
20140184437 | RADAR DEVICE - A radar device including an up-chirp tracking filter that performs a tracking process using a beat frequency at the time of an up-chirp to acquire a beat frequency, a down-chirp tracking filter that performs a tracking process using a beat frequency at the time of a down-chirp to acquire a beat frequency, target detectors that calculate distance and speed estimated values of the target for the chirps from beat frequency time series data about the chirps; an identical target determinator that determines whether or not the target detected for each of the chirps is an identical target using the distance and speed estimated values, and a distance and speed calculator that calculates a distance and a speed of the target using the beat frequency of the target which is determined to be an identical target. | 07-03-2014 |
20140292557 | Vehicle Collision Detection And Barrier Deployment System - The system of the present invention is a vehicle collision warning and prevention system. It is capable of detecting and calculating the speed, distance, location, and arrival time of the oncoming vehicles and determining whether the oncoming vehicles may collide with the vehicle having the system on board. The system thus warns the driver in the vehicle about the speed, distance, location, and the arrival time of the oncoming vehicle (time of accident). The system is capable of deploying barriers (i.e. air cushions or air bags) in a fraction of a second before the collision between the vehicle and the oncoming vehicle. The system is capable of reducing the impact of the auto collision more than any or most auto collision protection in the market today. The system will protect or prevent most body damages to the front and rear of the car in an auto collision. | 10-02-2014 |
20140306840 | IMAGING RADAR SENSOR WITH SYNTHETIC ENLARGEMENT OF THE ANTENNA APERTURE AND TWO-DIMENSIONAL BEAM SWEEP - A device and a method for determining the position of an object, in particular of a moving object, in a three dimensional space is made available. Here the device comprises at least two switchable transmitting antenna arrays having different vertical beam alignments and a number of receiving antennas arranged in a row. The transmitting antennas are arranged spaced apart by a distance that corresponds to the distance between the outer phase centres of the receiving antennas. Otherwise the transmitting antennas can be positioned arbitrarily around the receiving antenna. The horizontal beam sweep over a wide angle range is implemented by the “digital beam forming” method. The vertical object position is measured by comparing the amplitude of the received signals with sequentially operated transmitting antennas having different vertical beam directions. | 10-16-2014 |
20140320335 | PERSONAL RADAR - Systems and methods for providing personal radar, object presence detection, and object localization are provided. Multiple devices that perform high-resolution ranging can be operated to perform radar in an area, detect objects and motion of objects in the area, and generate a virtual steerable antenna. | 10-30-2014 |
20150091749 | METHOD FOR DETERMINING AT LEAST ONE PARAMETER FOR THE PURPOSE OF CORRELATING TWO OBJECTS - A method for determining at least one parameter for the purpose of correlating two objects ( | 04-02-2015 |
20150145714 | RADAR APPARATUS - In a dual-frequency CW radar apparatus, first/second beat signals that include reflection components of radar waves conforming to transmission signals of first/second frequencies are generated for each antenna element and the generated signals are Fourier transformed. A power spectrum average of the beat signals is used as a basis for the detection of a peak frequency f | 05-28-2015 |
20150338505 | RADAR SYSTEM - A stationary object decision processing unit | 11-26-2015 |
20150346321 | SIGNAL-BASED DATA COMPRESSION - Aspects of the present disclosure are directed to apparatuses and methods involving the detection of signal characteristics. As may be implemented in accordance with one or more embodiments, an apparatus includes a radar or sonar transceiver that transmits signals and receives reflections of the transmitted signals. A data compression circuit determines a compression factor based on characteristics of the signals, such as may relate to a channel over which the signal passes and/or related aspects of an object from which the signals are reflected (e.g., velocity, trajectory and distance). Data representing the signals is compressed as a function of the determined compression factor. | 12-03-2015 |
20150355315 | RADAR APPARATUS - In a radar apparatus, whether or not a second target candidate associated with second target information satisfying a first condition in relation to a first target candidate is present is determined. When determined that the second target candidate is present, the first target information corresponding to the first target candidate is compared with the second target information corresponding to the second target candidate. The “first condition” is that distances and relative speeds match. As a result of the comparison, when a difference between the power at a frequency peak corresponding to the subject target candidate and the power at a frequency peak corresponding to the comparison target candidate is greater than a prescribed threshold, the subject target candidate is determined to be a false image. Meanwhile, when determined that the difference is the prescribed threshold or less, the subject target candidate is determined to be a real image. | 12-10-2015 |
20160097849 | SYSTEM AND METHODS FOR INTERSECTION POSITIONING - A system and methods are provided for providing intersection positioning data. In one embodiment, a method includes detecting one or more objects by a device, wherein the one or more objects are detected relative to at least a portion of a roadway by an integrated radar sensor of the device, and tracking one or more detected objects by the device to determine tracking data, wherein tracking includes determining a number of detected objects, determining speed of the one or more detected objects and determining position of the one or more detected objects. The method may also include outputting the tracking data by the device. The system and methods may advantageously be employed for transmitting one or more of a collision warning, red light warnings, red light violation warnings and operation characteristics of objects during a traffic incident relative to intersection. | 04-07-2016 |
20160252607 | Gesture Recognition using Frequency Modulated Continuous Wave (FMCW) Radar with Low Angle Resolution | 09-01-2016 |
342108000 | With correlation | 4 |
20100085240 | RADAR APPARATUS - When super-resolution angle measuring processing is performed, due to intrusion of unnecessary other signals, an erroneous azimuth angle may be obtained. In a radar apparatus that measures an azimuth angle by use of a calculation device ( | 04-08-2010 |
20140085127 | RADAR DEVICE - A radar transmitting unit Tx transmits a radio-frequency radar transmission signal from a transmission antenna which is inclined in the direction of a depression angle φ. A radar receiving unit Rx estimates the height and speed of a vehicle which travels on a road surface using a reflected wave signal from the vehicle. A template generating unit generates a variation in a phase component of the reflected wave signal corresponding to N heights and speeds of the vehicle as N templates. N vehicle height/speed template correlation calculation units # | 03-27-2014 |
20140327566 | METHOD AND DEVICES FOR PROCESSING RADAR SIGNALS - A method for processing signals received by a plurality of receiving antennas in a radar system, for example for road safety, which emits sequences of chirp-modulated signals, wherein the received signals are mixed with local replicas of the transmitted signals so as to generate, for each receiving antenna, a sequence of detection signals. The detection signals are subjected to Fourier-transform processing and beam-forming processing for generating values of range, azimuth, and speed for at least one obstacle or “target” detected by the radar system. The method includes an acquisition process for yielding approximate values of range and azimuth of the obstacle, and a tracking process for yielding accurate range, azimuth and speed values of the obstacle itself. | 11-06-2014 |
20160202348 | RADAR DEVICE | 07-14-2016 |