Patent ID: 6765532
Filing Date: 2004-07-20
Classification: G01S,H01Q,H04B

Abstract:
A system for avoiding array overload in a system used for detecting individual signals in the midst of co-channel interferers by detecting and tracking the arrival of a new narrowband signal in signals arriving at an antenna array over a wide detection bandwidth, comprising:a digitizer for digitizing a wideband data stream from said array: a frequency channelizer coupled to said digitizer for frequency channelizing said data stream into frequency bins corresponding to frequency subchannels, said channeling being done at a sufficiently high revisit rate for a signal of interest, said rate constrained by required feature detection accuracy or environmental adaptation rates; a subspace tracker coupled to each frequency bin for performing subspace tracking within each frequency subchannel, thus to subspace track over all frequency bins; a clustering engine for combining the outputs of frequency bins based on Time/Frequency and Space subspace tracking results of each of said bins so as to cluster frequency subchannels into those bins having a specific identified signal; and, a downstream analyzer for processing only those frequency bins having said specific identified signal, thus to minimize downstream processing.