Patent ID: 8390514

Claim:
A system comprising: an antenna or transducer array; beamforming electronics for receiving signals from said array and outputting first and second beam signals; and first and second signal processing elements for detecting the presence of transient signals in said first and second beam signals respectively; said first signal processing element comprising: a first order statistic filter that outputs a first detection threshold; first signal power computing means for computing the power of said first beam signal and outputting a first signal representing the computed power of said first beam signal to said first order statistic filter; and a first comparator that outputs a first control signal when the output of said first signal power computing means exceeds said first detection threshold; said second signal processing element comprising: a second order statistic filter that outputs a second detection threshold; second signal power computing means for computing the power of said second beam signal and outputting a second signal representing the computed power of said second beam signal to said second order statistic filter; and a second comparator that outputs a second control signal when the output of said second signal power computing means exceeds said second detection threshold.