测绘通报 ›› 2018, Vol. 0 ›› Issue (4): 23-27.doi: 10.13474/j.cnki.11-2246.2018.0104

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Analysis of Geo-positioning Simulation of GF-4 Satellite Images

HAN Jie1, XIE Yong2   

  1. 1. School of Urban-rural Planning and Architecture, Xuchang University, Xuchang 461000, China;
    2. School of Geography and Remote Sensing, Nanjing University of Information Science & Technology, Nanjing 210044, China
  • Received:2017-08-09 Revised:2017-11-07 Online:2018-04-25 Published:2018-05-03

Abstract:

Through integrating the stationary orbit, high time resolution and area-array image characteristics of GF-4 satellite, building the rigorous sensor model, this paper realizes the geo-positioning simulation of GF-4 satellite. After analyzing the initial geometric simulation results, the geometric exterior calibration model is proposed. Then our research uses on-orbit real images and SRTM DEM to fulfill the geometric exterior calibration of the rigorous sensor model and discusses the influence of simulation control points (SCPs) distribution on camera angular systematic errors. The experiment results show the geometric simulation model can effectively simulate the geo-positioning errors of the on-orbit real GF-4 image after geometric exterior calibration.

Key words: GF-4, geo-positioning simulation, exterior calibration

CLC Number: