Block Adjustment of Satellite Images Using Line-of-Sight Direction Angle Correction

XU Rui; JI Song; SONG Jiaxuan; LI Dongzi; FAN Dazhao; LI Kai

doi:10.13203/j.whugis20220434

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Block Adjustment of Satellite Images Using Line-of-Sight Direction Angle Correction

Photogrammetry and Remote Sensing | 更新时间：2026-11-05

- Block Adjustment of Satellite Images Using Line-of-Sight Direction Angle Correction
- Geomatics and Information Science of Wuhan University Vol. 50, Issue 1, Pages: 133-143(2025)
- 作者机构：
  
  1.信息工程大学地理空间信息学院，河南郑州，450001
  2.61287部队，四川成都，610036
  3.军事科学院系统科学研究院，北京，100044
- 作者简介：
- 基金信息：
- DOI：10.13203/j.whugis20220434
  CLC： P237
- Received：29 January 2023，
  
  Published：05 January 2025
- 稿件说明：
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徐睿,纪松,宋佳璇，等.视线指向角改正的卫星影像区域网平差[J].武汉大学学报（信息科学版）,2025,50(1):133-143.

XU Rui,JI Song,SONG Jiaxuan,et al.Block Adjustment of Satellite Images Using Line-of-Sight Direction Angle Correction[J].Geomatics and Information Science of Wuhan University,2025,50(1):133-143.
徐睿,纪松,宋佳璇，等.视线指向角改正的卫星影像区域网平差[J].武汉大学学报（信息科学版）,2025,50(1):133-143. DOI：10.13203/j.whugis20220434

XU Rui,JI Song,SONG Jiaxuan,et al.Block Adjustment of Satellite Images Using Line-of-Sight Direction Angle Correction[J].Geomatics and Information Science of Wuhan University,2025,50(1):133-143. DOI：10.13203/j.whugis20220434

摘要

对于存在较大姿态测量误差、宽视场角和弱交会情况的卫星影像，传统有理函数模型区域网平差方法的误差补偿能力有限。虽然从物方角度去建立误差模型能够避免传统方法的局限性，但现有方法的模型构造都较为复杂。首先通过有理函数模型恢复像点的视线向量，求解视线指向角并构建指向角误差模型，然后通过区域网平差求解模型参数，最后根据模型参数更新有理多项式系数。仿真和真实的高分一号宽幅卫星影像实验表明，对比传统方法，所提方法在不同的角元素误差和控制点数量条件下可以取得更优且更稳定的定位结果；对交会角仅有0.05°的高分二号卫星影像进行实验，结果表明，所提方法无需数字高程模型辅助和弱交会检测就能得到收敛的结果，像方定位精度可达到1.89像素。

Abstract

Objectives

For the satellite images with large attitude measurement error

wide field angle and weak intersection

the traditional block adjustment of rational function mode (RFM) has limited error compensation ability. Although establishing error model from the object-space can avoid the limitations

the model construction of existing methods is more complicated.

Methods

First

the line-of-sight vector of image point is recovered by RFM. Then

the error model for the line-of-sight direction angle is constructed

with a number of parameters consistent with the traditional method. Finally

the model parameters are solved by block adjustment.

Results

Experiments on simulated and real Gaofen-1 wide field view satellite images show that the proposed method can always maintain an image-side positioning accuracy of about 1 pixel under different angular element errors. When using 13 control points

the plane positioning accuracy can reach 12.63 m

and the elevation positioning accuracy can reach 17.20 m. Experiments on Gaofen-2 satellite images with intersection angle of only 0.05° show that this method can obtain an adjustment convergence result with an image-side positioning accuracy of 1.89 pixel.

Conclusions

Compared with the traditional methods

the method using line-of-sight direction angle correction can achieve better and more stable positioning results for the satellite images with large attitude measurement errors and wide field angles

and can obtain convergence results without weak intersection detection and digital elevation model assistance in the block adjustment under weak intersection conditions.

关键词

Keywords

references

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