Suppressing noise for Pseudo-random code fuze by overlapping addition

How to suppress Gauss white noise that is inside the pass band of Pseudo-random code phase-modulation and pulse-doppler combined fuze is studied. According to the characteristic that Gauss white noise is stochastic, noise can be suppressed through getting the average of echo signals in several pseudo-random code cycles. The simulation results show that the ratio of maximal side lobe and main lobe of the combined fuze´s correlation output is reduced evidently, and the ability of suppressing noise become stronger as the number of pseudo-random code cycles added become bigger, then through overlapping addition and get the average of echo signals in several pseudo-random code cycles, Gauss white noise can be suppressed evidently.