Performance Analysis of Anti Noise FM Jamming of Pseudo-random Code Binary Phase Modulation Fuze Based on Doppler Effect

Abstract

Performance analysis of the pseudo-random code binary phase modulated (PRC-BPM) fuze is analyzed in this thesis. Firstly, its principle is introduced in brief. On this basis, the signal to jamming ratio (SJR) gain of its receiver in noise FM jamming is deduced in detail with Doppler frequency. Then, the effect of Doppler frequency, pseudo-random code width, the of period pseudo-random code serial and aiming frequency deviation on its performance of anti noise FM jamming is analyzed. The results indicate that the PRC-BPM fuze has better performance of anti noise FM jamming.

Noise immunity performance analysis based on MATLAB various amplitude modulation methods

“…Adhering to the principle of the experiment control variables, this study used the MATLAB simulation for four simulation amplitude modulation system respectively, and draw four kinds of different signal waveform modulation systems: baseband signal in time domain and frequency spectrum, the time domain and frequency spectrum of modulated signal, after demodulation signal of time domain and frequency spectrum, and calculate the size of the modulation system gain G [12]. Furthermore, the anti-noise performance of four modulation systems is analyzed and compared based on the above experimental results.…”