信号多普勒的仿真模拟与测试方法

Doppler signal simulation and testing method

提出实验室条件下生成信号多普勒效应的2种方法,一种是基于Matlab环境的仿真重构方法,另一种是基于计算机对接的传输模拟方法。给出了信号多普勒时域和频域的数学表述,在定量分析白噪声信号多普勒容限特性的基础上,对信号仿真模拟进行了测试验证。结果表明,实验室静态测试与理论分析一致,海上动态测试进一步证实了这一结论。

In this paper two methods were proposed under laboratory conditions,with which the Doppler effect of signal was generated.One way was based on the Matlab simulation environment reconstruction;another way was to transfer computer-based docking simulation.Mathematical expression of Doppler signal in time and frequency domain was given on the basis of quantitative analysis of Doppler tolerance of white noise signal;simulation of Doppler signal was tested and validated.The results showed that,laboratory static testing was consistent with theoretical analysis,and marine dynamic test confirmed this conclusion.