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对激光雷达相位调制信号进行模型构建和连续小波分析,提高信号的检测和参量估计能力,提出基于激光雷达相位调制信号检测方法。首先构建激光雷达相位调制信号模型,采用傅里叶变换分析信号进行相位调制信号尺度伸缩与时间平移关系分析,然后构建分段匹配滤波检测器检测信号,构建检验统计量进行尺度和时延参量估计。最后通过仿真实验进行性能测试,结果表明,采用本文方法进行激光雷达相位调制信号的处理和检测,能在较低的信噪比下有效检测信号,对信号和时延尺度参量估计的方差较小,实现信号性能的有效分析。
The phase modulation radar signal modeling and continuous wavelet analysis to improve signal detection and parameter estimation capabilities, based on the phase modulation radar signal detection method. Firstly, the phase modulation signal model of lidar was constructed. The Fourier transform was used to analyze the signal scaling and time-shift of phase-modulated signal. Then, the detection signal of segment matched filter was constructed and the test statistic was constructed to estimate the scale and delay parameters . Finally, the performance test is carried out by the simulation experiment. The results show that the method of this paper can be used to process and detect the laser radar phase modulation signal, which can effectively detect the signal under the low signal-to-noise ratio. The variance of the signal and the delay scale parameter estimation is small , To achieve an effective analysis of signal performance.