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遥感技术与应用  2018, Vol. 33 Issue (3): 555-562    DOI: 10.11873/j.issn.1004-0323.2018.3.0555
数据与图像处理     
多重观测卫星影像的无控区域网平差
姚星辉1,2,3,尤红建1,2,3,王峰1,2,3,吴东霞4,卢晓军5
(1.中国科学院大学,北京 100190;2.中国科学院电子学研究所,北京 100190;
3.中国科学院空间信息处理与应用系统技术重点实验室,北京 100190;
4.北京遥感信息研究所,北京 100094;5.中国国际工程咨询公司,北京 100048)
Multi-Observed Block Adjustment for Satellite ImagesWithout Ground Control Points
Yao Xinghui1,2,3,You Hongjian1,2,3 ,Wang Feng1,2,3,Wu Dongxia4,Lu Xiaojun5
(1.University of Chinese Academy of Sciences,Beijing 100190,China;
2.Insititute of Electronics Chinese Academy of Sciences,Beijing 100190,China;
3.Key Laboratory of Technology in Geo\|spatial Information Processing and Application SystemInstitute of Electronics,Chinese Academy of Sciences,Beijing 100190,China;
4.Beijing Remote Sensing Information Institude,Beijing 100011,China;
5.China International Engineering Consulting Corporation,Beijing,100048,China)
 全文: PDF(3724 KB)  
摘要:
为了保证卫星遥感影像获取地面目标区域信息的准确性,需要对影像数据进行几何校正,几何校正的精度决定着遥感图像应用的效果。常规的校正方法需要地面控制点信息,但在境外、我国西部、荒漠等这些地方很难获取控制点。针对上述问题,提出了多重观测卫星影像的无控区域网平差方法,提高无控定位的精度。与常规区域网平差不同,该方法的误差方程基于“单物方—多像方”的连接点集建立,在无控条件下误差方程能够收敛到更加精确的解。通过误差补偿模型调整每幅影像的有理函数模型系数,使得不同方向的定位误差进行抵消,从而在无控制点的条件下提高遥感影像的定位精度。首先,利用卫星影像的RPC文件和像方误差补偿模型,建立多重重叠的区域网平差模型,然后,利用共轭梯度算法迭代求解误差方程,最后调整RPC系数,提高遥感图像定位精度。通过资源三号卫星影像试验表明:多重观测区域网平差将遥感图像的平面定位精度由19.8 m提高至12.9 m,能够有效提高影像的几何定位精度。

 
关键词: 多重观测区域网平差有理函数模型无控制点定位
    
Abstract: In order to ensure the accuracy of target area’s ground information,it is necessary to do geometric correction for remote sensing images.Geometric correction has a great influence on the application of remote sensing images.Traditional geometric correction needs ground control points.However,it is difficult to obtain ground control points in some places,such as abroad,western China and desert.To improve positioning accuracy without ground control points,multi\|overlapping block adjustment model is built.Different from traditional method,error equations are built depending on multi\|projection in image space of a single object.In this way,error equations can converge to more accurate solutions.By adjusting the rational polynomial coefficients of each image,the positioning errors in different directions are compensated to a certain extent.Thus the positioning accuracy of remote sensing images is improved.First,block adjustment model and error compensation model are built with RPC coefficients.Then,conjugate gradient algorithm is used to solve the error equations iteratively.Finally the RPC coefficients are adjusted to improve the accuracy of positioning without ground control points.The ZY\|3 data test shows that multi\|overlapping block adjustment model increase the plane positioning accuracy of remote sensing images from 19.8m to 12.9m and the method can effectively improve the absolute positioning accuracy of remote sensing images.
Key words: Multi\    overlapping; Block adjustment; Rational polynomial coefficients; Positioning without ground control points
收稿日期: 2017-03-16 出版日期: 2018-07-04
:  TP 75  
基金资助: 国家重点研发计划项目(2017YFB0502901)资助。
作者简介: 姚星辉(1993-),男,河北石家庄人,硕士,主要从事遥感图像处理。Email:1158867223@qq.com。
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引用本文:

姚星辉,尤红建. 多重观测卫星影像的无控区域网平差[J]. 遥感技术与应用, 2018, 33(3): 555-562.

Yao Xinghui,You Hongjian. Multi-Observed Block Adjustment for Satellite ImagesWithout Ground Control Points. Remote Sensing Technology and Application, 2018, 33(3): 555-562.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2018.3.0555        http://www.rsta.ac.cn/CN/Y2018/V33/I3/555

[1] 胡继伟,洪峻,明峰,张林涛. 基于区域网平差的机载InSAR定标方法中控制点的选取策略及误差传递关系分析[J]. 遥感技术与应用, 2011, 26(3): 270-276.
[2] 胡继伟 洪峻 明峰 张林涛. 基于区域网平差的机载InSAR定标方法中控制点的选取策略及误差传递关系分析[J]. 遥感技术与应用, 2011, (3): 0-0.