FM-CW polarization radar as a correlation receiver with signal compression along the frequency axis

Abstract

This paper shows that the signal processing in FM-CW radar is similar to a correlation receiving technique with compression of the FM scattered signal spectrum along the frequency axis. This compression is realized with the use of a matched filter. The output signal of the matched filter is the autocorrelation function of the FM input signal. However, the compression theory of FM pulse signals along the time axis cannot be used directly for the description of signal processing in FM-CW radar with high resolution both in distance and in Doppler frequency. In this connection the development of a signal compression theory for FM-CW radar is opportune and actual.