月球卫星三线阵CCD影像EFP光束法空中三角测量

本文对月球卫星摄影三线阵CCD影像的EFP(等效框幅相片)光束法空中三角测量作两种处理:一是与现行摄影测量常用的将平差转到切面坐标系进行,二是在摄影测量坐标系内,长航线自由网EFP光束法平差利用三线CCD推扫特点,在EFP平差中增加对前、后视影像的相机主距的附加改正项,用以补偿由于球面曲率产生的前、后视影像比例尺的差异,平差得到的是平面基准的地面坐标及外方位元素的平差值。前者计算,数学上严格,但长航线要适当分段为切面处理;后者计算数学上有近似性,可方便地用于估算卫星姿态变化率,或作地面模型的几何反演等实验研究。利用嫦娥一号获取的第一条航线,并给出相应的结果。

EFP bundle triangulation using lunar imagery obtained from satellite three-line-array camera

The paper give two programs for EFP bundle adjustment.The tangent plane rectangular coordinate system is taken by the adjustment of the first programme.Therefore the effect of moon curvature can be eliminated automatically.For the second program,the method of free adjustment with approximate scale and orientation element within photogrammetric local system have been used.A new additional unknown parameter so-called corrected focus lens fFA is introduced in order to compensate the differential of scale between the forward or afterward image and verticalward image,which is effected by the moon curvature during the satellite push_broom flying.The ship model would be without moon curvature even the image ship is very long.As compared with the first programme,the solution of second program is approximated.Nevertheless,the program can be used to some special area applications.Using imagery from the Chang'e-1 satellite with very long trip for the adjustment,the successful results are showed.