机载LiDAR数据逐航带平差与航带区域网平差对比  

A comparative study between individual strip adjustment and strip block adjustment of airborne LiDAR data

作　　者：王丽英[1] 宋伟东[1] 

机构地区：[1]辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000

出　　处：《测绘科学》2013年第2期32-34,共3页Science of Surveying and Mapping

基　　金：国家自然科学基金资助项目(41201454);辽宁省教育厅项目(12-1176);辽宁省教育厅科学研究项目(2009A332);2012年高等学校博士学科点专项科研基金(201221211120002);对地观测技术国家测绘地理信息局重点实验室基础测绘经费资助项目(K201207)

摘　　要：机载LiDAR系统获取的点云数据在经过预处理解算后仍会残余部分系统误差,因此,在利用点云数据生成DEM等相关数字产品之前,必须检查并改正这部分系统误差。以此为主要目标,本文对机载LiDAR数据的逐航带平差与航带区域网平差展开研究,并以Microsoft Visual Studio 2008 C++为开发平台、基于实测数据对比了两者在完成多航带构成的测区平差时的精度,结果表明:机载LiDAR数据的航带区域网平差方法相较于LZD算法可有效降低逐航带平差导致的误差累积,精度更高。After preproeessing point cloud data obtained by airborne LiDAR measurement technique, the output point cloud data may still have some remnants of systematic errors between strips. Therefore, the errors must be checked and corrected prior to the utili- zation of DEM and other related digital products obtained from airborne LiDAR data. This paper studied individual strip adjustment and strip block adjustment of airborne LiDAR data, compared the accuracy of both to complete the block adjustment. Experimental results showed that： the airborne LiDAR strip block adjustment compared to LZD algorithm could effectively reduce the error accumulation caused by individual strip adjustment with higher adjustment accuracy.

关 键 词：机载激光雷达 航带平差 最小高程差 逐航带平差 航带法区域网平差 

分 类 号：P228[天文地球—大地测量学与测量工程] P207.2[天文地球—测绘科学与技术]