测绘学报 ›› 2014, Vol. 43 ›› Issue (11): 1158-1164.doi: 10.13485/j.cnki.11-2089.2014.0179

• 学术论文 • 上一篇    下一篇

轨道约束的资源三号标准景影像区域网平差

张过1,汪韬阳1,李德仁2,唐新明3,蒋永华1,潘红播1,祝小勇3   

  1. 1. 武汉大学
    2. 武汉大学测绘遥感信息工程国家重点实验室
    3. 国家测绘局卫星测绘应用中心
  • 收稿日期:2013-12-09 修回日期:2014-04-13 出版日期:2014-11-20 发布日期:2014-12-02
  • 通讯作者: 张过 E-mail:guozhang.lmars@gmail.com

Block Adjustment for ZY-3 Satellite Standard Imagery Based on Strip Constraint

ZHANG Guo1,WANG Taoyang1,LI Deren2,TANG Xinming3,JIANG Yonghua1,PAN Hongbo1,ZHU Xiaoyong3   

  1. 1. Wuhan University
    2. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University
    3. Satellite Surveying and Mapping Application Center
  • Received:2013-12-09 Revised:2014-04-13 Online:2014-11-20 Published:2014-12-02
  • Contact: ZHANG Guo E-mail:guozhang.lmars@gmail.com

摘要:

考虑到同轨道拍摄的长条带卫星影像具有相同的误差分布特性,针对资源三号的标准景影像产品,提出了基于轨道约束的卫星影像区域网平差方法。首先,根据同轨相邻影像的偏移量计算轨道影像坐标系下的像点坐标;其次,通过同轨每景影像的RFM重新生成轨道影像的RFM,同时生成补偿格网;然后,根据基于像方仿射变换的RFM对轨道影像进行区域网平差;最后,利用求得的轨道影像的仿射变换参数重新计算原始单景影像的仿射变换参数。利用不同地区资源三号测绘卫星影像数据的试验表明,基于轨道约束的卫星影像区域网平差(以下简称轨道平差)在稀疏控制条件下,其精度明显好于单景影像平差的精度。在6控情况下,太行山试验区达到平面2.504m高程3.117m,在渭南试验区达到了平面4.061m高程2.895m。试验结果证明了轨道平差的有效性和可行性。

关键词: 资源三号测绘卫星影像, 轨道约束, RFM, 补偿格网, 区域网平差, 精度

Abstract:

Taking into account that long strip satellite images have the same error distribution characteristics, we propose a block adjustment method for ZY-3 satellite standard imagery based on strip constraint. First, image point coordinate is calculated in strip coordinate system according to offset value of the adjacent image; Second, RFM of strip image is regenerated by RFM of single images, while generating compensation grid; Third, block adjustment for strip image is implemented based on RFM with affine transformation parameter; Finally, affine transformation parameters of single images are recalculate by the affine transformation parameters of strip image. Experiments of ZY-3 satellite imagery show that block adjustment for satellite imagery based on strip constraint (strip adjustment) can achieve a better result than block adjustment for satellite imagery based on single image under the condition of sparse control. The planar and vertical accuracies of 2.504m and 3.117m in Taihangshan and 2.504m and 3.117m in weinan, respectively, with 6 GCPs. The test results demonstrate the effectiveness and feasibility of the method

Key words: ZY-3 satellite images, strip constraint, RFM, compensation grid, block adjustment, accuracy

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