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Geometric calibration for GF-5 AHSI camera

  • role： First author第一作者
  • Affiliation：

    State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China

  • Email：wangmi@whu.edu.cn
  • Introduction： 王密，1974年生,男,教授, 研究方向为高分辨率光学遥感影像高精度几何处理与应用。E-mail:wangmi@whu.edu.cn
WANG Mi1,  
  • Affiliation：

    State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China

QIN Kailing1,  
  • Affiliation：

    State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China

CHENG Yufeng1,  
  • role： Corresponding author通信作者
  • Affiliation：

    State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China

  • Email：yzhu_1003@foxmail.com
  • Introduction： 朱映，1987年生,女，副教授，研究方向为光学遥感影像几何处理。E-mail:yzhu_1003@foxmail.com
ZHU Ying1*,  
  • Affiliation：

    State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China

GUO Beibei1

résumé

The advanced hyperspectral imager of GF-5 is a high spectral resolution camera, and it has outstanding recognition and classification ability for complex features and environments. The high accuracy geometric calibration is the key factor for the geometrical quality of satellite imagery. The geometric calibration model based on the pointing angle of the probe is used in this paper. The internal and external calibration parameters are solved step by step and some typical images are selected for experimental verification. The results indicated that the absolute positioning accuracy of AHSI can be stably better than 60 m (2 pixels) and the internal positioning accuracy is better than 0.5 pixels, the bands registration accuracy can be better than 0.3 pixels.

mots-clés

GF-5 satellite;hyperspectral camera;strict geometric model;geometric calibration;positioning accuracy

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