ADS100航摄影像空中三角测量精度分析  

Analysis of Aerial Triangulation Accuracy for ADS100 Aerial Image

作　　者：屈伟军 QU Weijun(The Second Surveying and Mapping Institute of Hunan Province,Changsha Hunan 410114)

机构地区：[1]湖南省第二测绘院,湖南长沙410114

出　　处：《国土资源导刊》2022年第2期66-70,共5页Land & Resources Herald

摘　　要：使用徕卡ADS100数字航摄仪获取的0.2 m分辨率影像,分别采用差分GNSS和精密单点定位2种方式解算机载IMU/GNSS数据,针对这2种方式采取了不同的地面控制点布设方式进行空中三角测量,并分析其精度。结果表明,使用ADS100航摄影像,采用差分GNSS方式解算机载IMU/GNSS数据时,无地面控制点、少量地面控制点和大量地面控制点3种方案的空中三角测量结果精度基本一致,都能够达到规范要求;采用精密单点定位方式解算机载IMU/GNSS数据时,无地面控制点的空中三角测量结果存在系统误差,通过加入1个地面控制点可以消除该误差,精度也能达到规范要求。The images with resolution of 0.2 m obtained by First the Leica ADS100 digital aerial photography system The airborne IMU/GNSS data was calculated by differential GNSS and precise single-point positioning methods.For the two methods,aerial triangulation was executed by different ground control point layout and the accuracy was analyzed.The results show that the ADS100 aerial image and the differential GNSS method are used to solve the airborne IMU/GNSS data,the three schemes of no ground control points,a small number of ground control points and a large number of ground control points have basically the same aerial triangulation accuracy.They can meet the requirements of the specification.When the precise single-point positioning method is used to solve the airborne IMU/GNSS data without ground control points,there is a systematic error in the aerial triangulation results.The error can be eliminated by adding a ground control point and the accuracy can also meet the specification requirements.

关 键 词：ADS100航摄影像 空中三角测量 地面控制点 精度分析 

分 类 号：P231[天文地球—摄影测量与遥感]