GPS/IMU辅助机载三线阵影像光束法平差  

GPS/IMU Supported Bundle Adjustment of Airborne Three Line Images

作　　者：刘军[1] 王冬红[1,2] 张莉[1,2] 王慧[1] 

机构地区：[1]信息工程大学测绘学院,河南郑州450052 [2]65015部队,辽宁大连116023

出　　处：《测绘科学技术学报》2009年第1期36-40,共5页Journal of Geomatics Science and Technology

基　　金：国家863计划项目(2006AA12Z154);地理空间信息工程国家测绘局重点实验室经费资助(200820);中国博士后科学基金资助(20080430587);信息工程大学测绘学院院课题(Y0705)

摘　　要：建立了GPS/IMU观测值与外方位元素之间的数学关系,引入线性多项式、分段多项式和定向片内插3种数学模型用于机载三线阵影像的单航带及区域网光束法平差。ADS40数据的试验结果表明,在少量控制点的支持下,3种数学模型的单航带平差均可取得优于1.1个像素的定位精度,其中定向片内插模型最适合用于三线阵影像的空中三角测量。区域网平差的结果进一步证明,四角布设平高控制点即可得到最优的平差结果。The mathematic relationship between GPS/IMU data and corresponding exterior orientation parameters was developed. Three trajectory models such as linear polynomial model （LPM）, piecewise polynomial model （PPM） and orientation image model （OIM） were introduced in the strip and block bundle adjustment of airborne three line image- ry. Test results from ADS40 data indicated that better than 1.1 pixels was achieved by strip adjustment of these three models with quite a small quantity of control points, and OIM was most suitable for the triangulation of three line im- agery. Block adjustment using different kinds of control point combinations also proved that best triangulation result could be achieved when locating a full control point at each corner of the block.

关 键 词：三线阵 GPS/IMU 光束法平差 定向片 航带平差 区域网平差 

分 类 号：P237[天文地球—摄影测量与遥感]