Knowledge-Aided CFAR Threshold Adjustment For Signal Tracking

摘要

A constant false alarm rate (CFAR) filter for a communication system receiver, that is subject to relative motion with respect to a transmitter, includes a knowledge-aided CFAR controller. The knowledge-based CFAR controller adaptively adjusts the filter's CFAR threshold to a value that is effective to mask, as false alarms, selected received signals associated with operating conditions where signal detection is expected or known to be difficult or effectively impossible, so as to prevent such false alarms from being coupled to a post CFAR filter signal processor.