伪码调相多普勒定距原理及其参数设计方法

Pseudorandom Code Phase Modulatio Doppler Distance Principle and Parameter Designing Method

伪随机码具有良好的随机特性,它的自相关函数跟白噪声的自相关函数特征相类似,具有较窄的相关峰值和较宽的功率谱密度,使它易于从其他信号或干扰中分离出来。文章首先介绍军事和国防事业上广泛使用的伪码调相多普勒定距原理,其次研究给定参数条件下的多普勒定距算法,算出来的参数对其Simulink仿真模型提供合理的实验依据。最后,提出伪随机码调相多普勒定距系统的参数选择方法。

The pseudo-random code has good randomness, its autocorrelation function with the white noise autocorrelation function is similar to that with narrow correlation peak and wide peak power spectral density, so it is easy to separate from the other signals or interferences. This paper first introduces the pseudo random code Doppler distance principle, which widely used military career and the national defense affairs. Then studies the parameters of Doppler distance determining algorithm, parameters calculated to provide reasonable experimental basis for the Simulink simulation model. Finally, put forward the selection method of parameters from pseudo-random code phase miduclatio Doppler system.