Patent ID: 6226321
Filing Date: 2001-05-01
Classification: G01S

Abstract:
In a system for processing signals, a method for identifying presence or absence of at least one potential target comprising the steps of:receiving from multiple channels signals corrupted by Gaussian or non-Gaussian disturbance;partitioning said signals into secondary data having a low probability of containing said potential target and primary data to be assessed for the presence of said target;estimating at least one linear filter parameter from said secondary data;filtering at least one steering vector and said primary data with at least one whitening filter based on said at least one linear filter parameter to produce at least one steering vector residual and at least one primary data residual;calculating a first test statistic as a function of said at least one linear filter parameter, said at least one steering vector residual, and said at least one primary data residual; andcomparing said first test statistic to a threshold value to provide a ""target present"" or a ""target absent"" response when said signals are corrupted by Gaussian disturbance.