Abstract:

Because the pulse repetition frequency of the low pulse repetition frequency (PRF) radars is very low and there is terrible ambiguity in radial velocity measurement,it is necessary to make low-pulse repetition frequency radar be capable of velocity measurement.This paper puts forward a method for velocity measurement of Low PRT Radar,using FFT to achieve 8-channel narrow-band filter banks.Velocity measurement is achieved by using velocity mixing,velocity difference and velocity estimate.The simulation results verify the availability and practical value of the method.

Key words: low PRF radars;ambiguous in velocity;FFT;the elimination of velocity ambiguis