Applied Signal Technology, Inc. Patent applications |
Patent application number | Title | Published |
20120099569 | Femtocell Configuration - A method and apparatus for configuring a first cellular base station such as a femtocell to operate in a digital cellular telecommunications network includes: placing the first cellular base station in the digital cellular telecommunications network; detecting with a radio receiver at least one second operating cellular base station within the digital cellular telecommunications network; demodulating a first transmission of the at least one second cellular base station transmitter to obtain a first data stream; predictively modifying the first data stream to create a modified first data stream; correlating at least one periodic portion of the modified first data stream to form an enhanced data signal; decoding the enhanced data signal to obtain information; and configuring the first cellular base station with the information. | 04-26-2012 |
20110274222 | DIGITAL FREQUENCY CHANNELIZER - A method and apparatus provide digital frequency channelization of a digitally sampled input stream having a first bandwidth. The method and apparatus are implementable in software, firmware or hardware and convert a first set of real samples from the input stream into a first plurality of complex samples with a first functional block performing filtering, decimation and tuning functions, convert the first plurality of complex samples into a first pair of consecutive USB and a first pair of consecutive LSB complex samples with a second functional block performing filtering, decimation and tuning functions, and convert the first pair of consecutive USB and the first pair of consecutive LSB complex samples into a two pairs of complex USB and LSB complex samples with a pair of third functional blocks performing filtering, decimation and tuning functions, and apply the two pairs of complex USB and LSB complex samples to a string of n pairs (for n greater than or equal to one) third functional blocks each performing filtering, decimation and tuning functions. | 11-10-2011 |
20110270903 | DIGITAL FRACTIONAL INTEGRATOR - A method and apparatus for fractional digital integration of an input signal is provided, the input signal including a time series of numerical values and the method or apparatus including applying the input signal time series to one input of a two-input summer at a time I, providing an output of the summer to a delay register at time I, providing an output of the delay register from time i−1 to a two-input multiplier, providing an output of the multiplier to the summer at time I, using a resettable counter to determine a value i and index a lookup table with i to provide the indexed value of the lookup table as an input to the multiplier, and obtaining an output signal time series from the output of the summer. | 11-03-2011 |
20110267130 | DIGITAL FILTER-DECIMATOR-TUNER - A digital filter-decimator-tuner is configured to receive a complex signal input x | 11-03-2011 |
20110103642 | Multipass Data Integration For Automatic Detection And Classification Of Objects - Classification of a potential target is accomplished by receiving image information, detecting a potential target within the image information and determining a plurality of features forming a feature set associated with the potential target. The location of the potential target is compared with a detection database to determine if it is close to an element in the detection database. If not, a single-pass classifier receives a potential target's feature set, classifies the potential target, and transmits the location, feature set and classification to the detection database. If it is close, a fused multi-pass feature determiner determines fused multi-pass features of the potential target and a multi-pass classifier receives the potential target's feature set and fused multi-pass features, classifies the potential target, and transmits its location, feature set, fused multi-pass features and classification to the detection database. | 05-05-2011 |
20110102247 | Adaptive Clutter Filter for Maritime Surface Search Radar - A time sequence of raw radar data for a region of space is subdivided into a plurality of processing frames. The processing frames are subdivided into a plurality of processing cells and iteratively processed by selecting a single processing cell for processing, transforming the radar data of the processing cell to form transformed radar data in either the time domain or the Fourier domain. The transformed data is converted to a Power Spectrum Density Matrix in the case of the Fourier domain and a Time Space Correlation Matrix in the case of the time domain. This is smoothed and thresholded and then the clutter for the processing cell is estimated. Estimated local non-speckle clutter is estimated and removed from the transformed radar data, with the cleaned transformed radar data converted back to the time domain if required. | 05-05-2011 |