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在激光雷达的研究中，接收机视场角是一个非常重要的参数。作者利用一种改进的半解析ＭｏｎｔｅＣａｒｌｏ方法对激光雷达接收信号进行了模拟。在作者的模拟中，采用ＨｅｎｙｅｙＧｒｅｎｓｔｅｉｎ函数的修正公式、加入权值以及放宽判决门限等方法来增进光子的利用效率。由计算结果可以看出，不同的接收机视场角使得接收信号波形有很大的差异。通过分析，我们认为接收机视场角ＦＯＶ＝２０～３０ｍｒａｄ时能够获得较佳的接收信号。
Receiver field of view is a very important parameter in LIDAR research. The authors used a modified semi-analytical Monte Carlo method to simulate the received signal of lidar. In the author’s simulations, the correction formula of Henyey-Granstein function, adding weights and relaxing the decision threshold are used to enhance the photon utilization efficiency. As can be seen from the calculation results, different receiver field of view makes the received signal waveform is very different. Through analysis, we believe that the receiver receiving angle FOV = 20 ~ 30mrad can get better received signal.