卫星激光辅助光学影像立体测绘评估与分析  

Evaluation and analysis of satellite laser assisted optical image stereo mapping

作　　者：禇存 谢俊峰[1,2,3] 刘仁 莫凡 CHU Cun;XIE Jun-feng;LIU Ren;MO Fan(School of Surveying and Geographical Science,Liaoning Technical University,Fuxin 123000,China;Land Satellite Remote Sensing Application Center,MNR,Beijing 100048,China;School of Earth Sciences and Engineering,Hohai University,Nanjing 211100,China)

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 [2]自然资源部国土卫星遥感应用中心,北京100048 [3]河海大学地球科学与工程学院,江苏南京211100

出　　处：《激光与红外》2022年第9期1299-1305,共7页Laser & Infrared

基　　金：国家自然科学基金项目(No.41571440,No.41771360,No.41971426);北京金桥工程种子基金项目(No.ZZ19013);十三五航天预研项目(No.D040105,No.D040106);重点研发计划项目(No.SQ2019,No.YFE020224);高分测绘应用示范项目二期(No.42-Y30B04-9001-19/21)资助。

摘　　要：卫星激光辅助光学影像进行立体测绘是提高无控制测图精度的重要手段。针对美国ICEsat-1和我国高分七号、资源三号03星在轨激光测高载荷,本文从激光辅助光学影像提升高程精度的需求出发,采用激光与立体影像平高分离的区域网平差方法,对比和分析三颗卫星激光用于复合测绘的精度。试验选取天津同一地区的资源三号03星传感器校正立体影像和三颗卫星激光数据,利用15个外业检查点进行精度验证。试验结果显示,利用6~10个ICEsat-1、高分七号、资源三号03星激光点辅助光学立体影像平差后,立体影像定位高程精度分别由原始的4.64 m提升到2.51 m、2.4 m、3.48 m,充分表明,三颗卫星激光数据均可用于进一步提高立体影像高程精度,GF-7卫星激光辅助定位高程精度效果略优于ICEsat-1,ZY3-03星次之。Satellite laser-assisted optical imagery for stereo mapping is an important tool to improve the accuracy of uncontrolled mapping.Aiming at the on-orbit laser height measurement load of ICEsat-1 and GF-7 and ZY 3-03,the paper starts from the demand of laser assisted optical image to improve the elevation accuracy, and adopts the block adjustment method of level and height separation for laser and stereo image, compares and analyzes the accuracy of three satellite lasers for composite surveying and mapping.In the experiment, the stereo image of ZY3-03 satellite sensor in the same area of Tianjin and the lasers of three satellites are selected, and 15 RTK points are used for accuracy verification.The experimental results show that after using 6~10 laser points of ICEsat-1,GF-7 and ZY3-03 to assist optical stereo image adjustment, the stereo image positioning accuracy increased from the original 4.64 m to 2.51 m, 2.4 m and 3.48 m respectively.It is fully demonstrated that the laser data of all three satellites can be used to further improve the elevation accuracy of stereo images, and the effect of laser assisted positioning elevation accuracy of GF-7 satellite is slightly better than that of ICEsat-1,followed by ZY 3-03.

关 键 词：区域网平差 激光测高 资源三号03星激光 高分七号卫星激光 GLAS 

分 类 号：P236[天文地球—摄影测量与遥感]