测绘学报 ›› 2017, Vol. 46 ›› Issue (1): 53-61.doi: 10.11947/j.AGCS.2017.20160300

• 摄影测量学与遥感 • 上一篇    下一篇

高分四号静止轨道卫星高精度在轨几何定标

王密1, 程宇峰1, 常学立2, 龙小祥3, 李庆鹏3   

  1. 1. 武汉大学测绘遥感信息工程国家重点实验室, 湖北 武汉 430079;
    2. 武汉大学资源与环境科学学院, 湖北 武汉 430079;
    3. 中国资源卫星应用中心, 北京 100094
  • 收稿日期:2016-06-15 修回日期:2016-10-09 出版日期:2017-01-20 发布日期:2017-02-06
  • 作者简介:王密(1974-),男,教授,博士生导师,主要研究方向为高分辨率光学遥感卫星数据处理。E-mail:wangmi@whu.edu.cn
  • 基金资助:
    国家973计划(2014CB744201;2012CB719902;2012CB719901);国家自然科学基金(41371430;91438112;91438203;91438111;40901209)

High Accuracy On-orbit Geometric Calibration of Geostationary Satellite GF4

WANG Mi1, CHENG Yufeng1, CHANG Xueli2, LONG Xiaoxiang3, LI Qingpeng3   

  1. 1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China;
    2. School of Resource and Environment Sciences, Wuhan University, Wuhan 430079, China;
    3. China Centre for Resources Satellite Data and Application, Beijing 100094, China
  • Received:2016-06-15 Revised:2016-10-09 Online:2017-01-20 Published:2017-02-06
  • Supported by:
    The National Basic Research Program of China (973 Program) (Nos. 2014CB744201;2012CB719902;2012CB719901);The National Natural Science Foundation of China (Nos. 41371430;91438112;91438203;91438111;40901209)

摘要: 高分四号是世界上第一颗静止轨道高分辨率光学遥感卫星,高精度的几何定标是确保其成像几何质量的关键。本文分析了静止轨道卫星成像几何误差源及成像区域特点,提出了其严格几何成像模型;并在此基础上提出了静止轨道卫星面阵传感器在轨几何定标模型与定标参数估计方案。本文利用Landsat 8数字正射影像与GDEM2数字高程模型对高分四号卫星进行在轨几何定标,结果表明,通过严格的几何定标,可见光近红外传感器与中红外传感器的内部畸变在沿轨与垂轨方向上均稳定优于1个像素,通过统计分析可知,高分四号静止轨道卫星影像的绝对定位精度会受到成像时间与成像角度的影响而存在显著的波动。

关键词: 静止轨道卫星, 高分四号, 几何定标, 内部精度, 定位精度

Abstract: GF4 satellite is the first high resolution optical geostationary satellite for remote sensing in the world, and the high accuracy geometric calibration is the key factor for the geometrical quality of satellite imagery. The positioning errors and the features of imaging region of GF4 were analyzed, the rigorous imaging model was introduced. Then on orbit calibration model and parameters estimation method were introduced for planar array sensor of GF4 satellite. The experiments used the DOM of Landsat 8 and DEM of GDEM2 for the on-orbit calibration, and the results indicated that internal accuracy of the panchromatic and near-infrared sensor and intermediate infrared sensor can be stably better than 1 pixel in the along and vertical track direction, and the absolute positioning accuracy of GF4 would be greatly affected by imaging time and imaging angle, and fluctuated remarkably.

Key words: geostationary satellite, GF4 satellite, geometric calibration, internal accuracy, positioning accuracy

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