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本论文针对大气探测激光雷达的数字信号处理,进行了研究。通过分析大气探测激光雷达回波信号,回波信号中的噪声主要包括背景噪声、电噪声以及大气扰动噪声等,并对部分噪声的抑制提出了降噪方案。通过距离校正,得到探测距离。使用MTI法去除物理杂波噪声。设计滤波器,选取合适的截止频率,消除由接收系统各环节电子器件引起的高频电噪声。
In this paper, the digital signal processing of atmospheric sounding laser radar is studied. By analyzing the lidar echo signal, the noise in the echo signal mainly includes the background noise, the electrical noise and the atmospheric disturbance noise, and puts forward the noise reduction scheme for the partial noise suppression. Through the distance correction, get the detection distance. Use MTI method to remove physical clutter noise. Design filters, select the appropriate cut-off frequency, to eliminate the various components of the receiving system caused by high-frequency electronic noise.