半严格模型在机载LiDAR系统自动检校中的应用研究
Application Research of Quasi-rigorous Model in Auto-calibration of Airborne LiDAR System
摘要
机载LiDAR系统检校的目的是消除系统误差的影响,提高原始点云数据的精度。在对飞行条件进行一定假设的前提下,激光扫描直接定位的严格模型可以简化为半严格模型,降低了系统检校模型对于原始观测数据的依赖。考虑到人工交互方式建立条带之间对应关系的缺陷,本文提出顾及点云特征的改进ICP算法获取条带之间的变换关系,建立了机载LiDAR系统的自动检校流程。采用包头检校场的真实LiDAR数据进行试验,结果表明本文提出的系统检校流程可以很大程度上消除系统误差的影响。
出处
《测绘通报》
CSCD
北大核心
2015年第10期76-80,共5页
Bulletin of Surveying and Mapping
基金
国家自然科学基金(41401497)
湖南省教育厅研究项目(13C325)
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