基于小波变换的激光雷达回波信号去噪方法研究  

Research on a denoising method of lidar echo signals based on wavelet transform

作　　者：孙宸 胡嘉龙 王昆 黄志豪 SUN Chen;HU Jia-long;WANG Kun;HUANG Zhi-hao(No.8 Research Academy of CSSC,Nanjing 211153)

机构地区：[1]中国船舶集团有限公司第八研究院,南京211153

出　　处：《雷达与对抗》2022年第4期20-22,57,共4页Radar & ECM

摘　　要：提出小波变换法去除激光雷达回波信号中的噪声,通过建立模型,选择合适的小波基、分解层数和阈值,利用Matlab仿真发现选择sym4、db6小波的五层分解法去噪效果较好,对提高激光雷达的有效探测距离和探测性能有较大的参考价值。The wavelet transform method is proposed to remove noise in the lidar echo signals.The model is established,and the appropriate wavelet base,decomposition layer and threshold are selected.The Matlab simulation results show that the five-layer decomposition method with the sym4 and db6 wavelets has a good denoising effect,which can improve the detection range and performance of the lidar effectively.

关 键 词：激光雷达 小波变换 去噪 

分 类 号：TN957.52[电子电信—信号与信息处理]