基于重叠航带的机载激光雷达系统检校  

Airborne Radar Calibration System Based on the Overlap Strip

作　　者：王致华[1] 张爱武[1] 王书民[2] 邵杰[1] 王飞[1] 李文宁[1] 

机构地区：[1]首都师范大学三维信息获取与应用教育部重点实验室,北京100048 [2]中国地震局地震预测研究所,北京100036

出　　处：《中国激光》2014年第2期321-328,共8页Chinese Journal of Lasers

基　　金：国家科技支撑计划(2012BAH31B01);北京市自然科学基金重点项目(B卷)(KZ201310028035)

摘　　要：为了达到机载激光雷达系统潜在的精度,需要对其整个系统进行严格的检校。在分析系统安置参数误差及其影响的基础上,建立起平行重叠航带之间差异分析模型。在平行重叠航带之间运用优化的迭代最近点(ICP)算法,通过配准过程,得到相邻重叠航带之间的刚体变换矩阵,再利用由外方位角元素和平移向量所组成的变换矩阵,实现平行重叠航带之间差异检测。将表达差异的转换参数运用到重叠条带误差分析模型中,推导系统安置参数偏差完成检校。试验结果通过与Tmatch软件检校过程进行对比分析,验证了这种方法的有效性。In order to achieve the potential accuracy of the system, a rigorous calibration process is needed as a whole. The proposed approach which is based on the analysis of system parameter error and influence establishes the discrepancy analysis model between parallel overlapping flight strips. And then through the registration process by using optimization iterative closest point （ICP） algorithm, we can get the rigid body transformation matrix between adjacent overlap strips. By using transformation matrix composed of elements of exterior orientation angle and translation vector, detecting differences between parallel overlap strips again are realized. The differences expressed by the transformation parameters can be applied to the error analysis model of overlapping strip. At this point, we can finish the calibration using the derived set parameters. Experimental results confirm the effectiveness of this approach.

关 键 词：激光光学 误差检校 ICP算法 转换参数 参数估计 

分 类 号：TN959.3[电子电信—信号与信息处理]