Abstract:

The measurement result of radar signal frequency decides the precision of speed radar.This paper mainly introduces two methods of frequency estimation,and estimates the Doppler velocity in white gauss noise using FFT,MUSIC and ESPRIT algorithms.By Matlab simulation,it compares the estimating precision of the three algorithms under different conditions.The result indicates that MUSIC and ESPRIT algorithms can achieve high precision of frequency estimation at a certain SN ratio.

Key words: engineering design;multiple signal classification(MUSIC);estimating signal parameter via rotational invariance techniques(ESPRIT);spectrum estimation