A comparative estimate of the quality of radar-signal detectors on a background of noise of variable intensity
For practical purposes the need arises to classify possible practical detection devices and to make a comparative estimate of their efficiency (quality). Below we consider mainly detectors of incoherent narrow-band signals, accompanied by additive Gaussian noise with varying intensity (i.e., nonstationary noise)  of the form (1).The advantages of the last two devices are combined in detectors with a logarithmic detector (when an additional differentiating circuit is connected at the output of the detector ) and detectors with a limiter. They carry out complete normalization of the power, and not only the variance of the output noise, which enables detection to be carried out with an unregulated threshold, i.e., they provide nonparametric detection.
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