A new spectrum analysis approach using autocorrelation technique and MEM

This paper describes a new technique for estimating the frequency of a sinusoidal signal immersed in broad-band noise. The technique is eminently suitable for identifying a single spectral peak in broad-band noise when the signal-to-noise ratio is very poor. This situation is a characteristic of a phased detected pulse doppler radar return in an ECM environment, or a very weak target signal immersed in broad-band receiver noise. Computer simulation results are included. The results show that for a single sinusoidal signal in a background of additive broad-band noise, this new technique is supperior in performance when compared with the conventional MEM doppler processor.