Influence of the operating mode on noise stability of nonlinear radar

Abstract

This paper describes the influence of the operating mode on noise stability of nonlinear radar. Nonlinear radiolocation is a simple way to discriminate electronic targets (semiconductors). All electric devices contain semiconductors. Its voltage-current characteristic is nonlinear, so the probing signal spectrum is upgraded with harmonics. Efficiency of such transformation is small. There are the objects capable to create a handicap in a frequency band of a nonlinear location. Reception of a weak signal on a background of handicaps is conducted. It is usual narrow-band interferences. Therefore, a locator should have ability of a choice of a radio channel in the range of channels 1..m with a minimum level of handicaps. Results of researches of problems of an automatic choice of the channel with a minimum level of handicaps use swept-frequency modulation of a signal and the synchronous detecting are submitted.