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机载激光雷达三维成像技术中对工作参数的设置非常重要,其关系到机载激光雷达测量精度的高低。为了获得机载激光雷达工作参数的最优设置值,推导了机载激光雷达扫描激光脚点的三维坐标误差,进行了误差因素分析,并确定了影响机载激光雷达激光脚点测量精度的各个工作参数。基于正交化实验设计,对每个工作参数设置了3个水平,共获得了18个机载激光雷达工作参数组;通过仿真机载激光雷达扫描过程,获得了在18组参数设置值下扫描激光脚点的三维坐标误差。通过正交实验误差分析,获得了各工作参数的最优设置值,并探讨了各工作参数的取值特点和规律,为提高机载激光雷达的实际测量精度提供了理论指导。
The setting of working parameters in 3D imaging technology of airborne lidar is very important, which is related to the accuracy of airborne lidar. In order to obtain the optimal setting value of airborne lidar’s working parameters, the three-dimensional coordinate error of airborne laser radar scanning laser footing is deduced, the error factor analysis is carried out, and the influence of each Working parameters. Based on orthogonal experimental design, three working parameters were set for each working parameter, and a total of 18 working parameters of airborne lidar were acquired. Through the scanning process of airborne lidar, Three-dimensional coordinate error of laser foot. By orthogonal experimental error analysis, the optimal settings of each working parameter are obtained, and the characteristics and rules of the values of each working parameter are discussed, which provides theoretical guidance for improving the actual measurement accuracy of airborne lidar.