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Velocity monitoring signal processing method of track traffic based on Doppler effect

机译：基于多普勒效应的轨道流量速度监测信号处理方法

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摘要

In order to improve the monitoring efficiency of track traffic speed, a signal processing method based on Doppler effect is purposed to meet the accurate velocity measurement of high speed trains. As a result, the track traffic radar monitoring signal processing method based on the Doppler effect is studied. First of all, the Doppler effect and the Doppler principles are analysed. Then, the research of signal processing algorithm of rail traffic radar system is focused on, and the improvement method of a real sequence fast Fourier transform (FFT) imaginary part arithmetic algorithm is put forward. The process of FFT algorithm is simplified, and finally, through the MATLAB software simulation, the improved FFT algorithm spectrum analysis effect is further verified. The test results showed that the use of improved FFT algorithm ensured the measurement accuracy, and improved the Doppler frequency calculation speed. In addition, it can meet the processing requirements of rail traffic radar velocity measurement system on the rail traffic velocity monitoring signal.
机译：为了提高轨道交通速度的监测效率，基于多普勒效应的信号处理方法是为了满足高速列车的精确速度测量。结果，研究了基于多普勒效应的轨道交通雷达监测信号处理方法。首先，分析了多普勒效应和多普勒原理。然后，重点放置了轨道交通雷达系统信号处理算法的研究，提出了实际序列快速傅里叶变换（FFT）虚部算术算法的改进方法。 FFT算法的过程被简化，最后，通过MATLAB软件仿真，进一步验证了改进的FFT算法频谱分析效果。测试结果表明，使用改进的FFT算法确保了测量精度，提高了多普勒频率计算速度。此外，它还可以满足轨道交通雷达速度测量系统对轨道交通速度监测信号的处理要求。

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