Patent ID: 6215115
Filing Date: 2001-04-10
Classification: G01S,H04N

Abstract:
An accurate target detection system comprising:first means for receiving electromagnetic signals and providing electrical signals in response thereto, said first means including an array of electromagnetic energy detectors, each detector providing an electrical detector output signal;second means for correcting non-uniformities in said first means based on said electrical signals and providing calibrated electrical signals in response thereto, said second means including means for compensating for gain, background, and noise non-uniformities in said electromagnetic energy detectors and a detector gain term memory for storing detector gain compensation values, said detector gain compensation values normalized by noise estimates;third means for determining if a target signal is present within said calibrated electrical signals and providing a target detection signal in response thereto; andfourth means for selectively activating or deactivating said second means based on said target detection signal.