Detection of Signals in Noise and Radar Receivers
Radar receiver extracts the target information by processing the detected signal or echo (that is signal reflected from the target). The detection of a signal and extraction of information of the object from the detected echo are two separate operations. In general radar detects the signals in the presence of noise. The common problems associated during detecting radar signals in the presence of noise are detection of weak signals and extraction of target information from the weak signals. In all radar receivers, the matched filter, which is an optimum filter, is used for the detection of weak signals in the presence of noise. The matched filter is referred to as an optimum ...