Acta Geodaetica et Cartographica Sinica >

2017 , Vol. 46 >Issue 1: 53 - 61

DOI: https://doi.org/10.11947/j.AGCS.2017.20160300

High Accuracy On-orbit Geometric Calibration of Geostationary Satellite GF4

  • WANG Mi ,
  • CHENG Yufeng ,
  • CHANG Xueli ,
  • LONG Xiaoxiang ,
  • LI Qingpeng
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  • 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 date: 2016-06-15

  Revised date: 2016-10-09

  Online 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)

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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

Cite this article

WANG Mi , CHENG Yufeng , CHANG Xueli , LONG Xiaoxiang , LI Qingpeng . High Accuracy On-orbit Geometric Calibration of Geostationary Satellite GF4[J]. Acta Geodaetica et Cartographica Sinica, 2017 , 46(1) : 53 -61 . DOI: 10.11947/j.AGCS.2017.20160300

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