基于多普勒效应的伪码调相及其与PAM复合引信的抗噪声性能分析

Performance Analysis Concerning Anti-noise for Pseudo-random Code Phase Modulation and Pulse Amplitude Modulation Combined Fuze Based on Doppler Effect

该文研究基于多普勒效应的伪码调相及其与脉冲幅度调制(PAM)复合引信的抗噪声性能。首先介绍了其工作原理;然后,推导了其接收机的总调制制度增益,分析了多普勒频率、伪码周期和脉冲宽度对抗噪声性能的影响。结果表明伪码调相与PAM复合引信的抗噪声性能强于伪码调相引信,并且通过对脉冲宽度、伪码序列周期和工作频率的设计可以保证两种引信良好的抗噪声性能。

Performance of anti-noise for the pseudo-random code phase modulation and pulse amplitude modulation combined fuze based on Doppler effect are discussed in this thesis. Firstly, the principle of them are introduced briefly. Secondly, on this basis, the overall SNR gains of the whole procedure after correlation detection are deduced in detail. Their performance of anti-noise is analyzed, which is affected by Doppler frequency, the period of pseudo-random code and the pulse width of code-element .The results show that the performance of anti-noise for the latter fuze is better than that of the pseudo-random code phase modulation fuze. And the good performance of anti-noise can be guaranteed by designing on their parameters.