A method for the detection of long pseudo-random code DSSS signals based on the processing of delay-multiply (I) - the estimation of the pseudo-random code period and the chip width

Abstract

Aiming at the problems of the detection of long pseudo-random code DSSS (direct sequence spread spectral) Signals and the estimation of the pseudo-random code period and the chip width, the paper proposes a method based on the processing of delay-multiply with the signals. The method does processing of delay-multiply on the received signals at first, then calculates the autocorrelation and gets correlation peaks, which can reflect the characteristics of the long pseudo-random code DSSS signals, in the autocorrelation domain; In the detection of the long pseudo-random code DSSS signals we can realize the detection and achieve the estimation of the pseudo-random code period and the chip width by checking the correlation peaks. The computer simulations show that the proposed method has good performance.