Effects of FM linearity of linear FM signals on pulse-compression performance

The linear FM signals are being widely used in modern radar systems. But the FM linearity of such signals is one of the important factors that affect the quality of signals generated by linear FM waveform generation systems. The models of several types of frequency deviation function are made in this paper. And the effects of different kinds of FM linearity on the pulse-compression performance of output signals are investigated in detail. The computer simulation results are presented and prove the conclusions. All of the conclusions obtained by theoretical analyses and computer simulations provide important theoretical bases and experiential references for the parameters selection, performance evaluation and performance optimization of the engineering implementation of ultra wideband linear FM signal generators.