多普勒测速传感器信号处理算法的研究

Signal Process Algorithm Based on Railway Doppler Speed Measurement System

简述了基于多普勒原理的列车雷达测速的方法,介绍了雷达测速传感器的工作原理和系统结构设计。重点分析介绍了该系统的信号处理算法,并针对实时性需求改进了FFT快速傅里叶算法。对改进算法进行了仿真测试和模拟测试,测试结果表明采用改进后的算法保证了测量精度,提高了多普勒频率解算速度,实现了设计目标。

This paper describes the principal of the Doppler radar speed measurement, presents the working principle and the system design of the radar speed system. By analyzing the signal process algorithm, this paper puts forward an im- proved method of FFT algorithm according to the real-time performance demand. After a series of simulation tests, the ex- perimental results show that the improved algorithm has high accuracy and good process speed which fulfills the design targets.