测绘通报 ›› 2019, Vol. 0 ›› Issue (8): 59-62,67.doi: 10.13474/j.cnki.11-2246.2019.0252

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Geo-positioning error characteristic analysis of GF-4 imagery under different imaging states

HAN Jie1, XIE Yong2, LI Huina3, MIAO Baoliang4, SHI Hongbin1   

  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;
    3. School of Electric(Electromechanical) Engineering, Xuchang University, Xuchang 461000, China;
    4. 96608 Troops of PLA, Luoyang 471000, China
  • Received:2018-10-15 Online:2019-08-25 Published:2019-09-06

Abstract: As a geostationary orbit satellite with high-resolution array imaging characteristic in the Chinese high-resolution earth observation system, the geo-positioning accuracy of GF-4 images under different imaging states has always been the concern of researchers and application departments. In this paper, the geo-positioning accuracy of GF-4 images under staring, pitching and rolling imaging states is analyzed by comparing the location information of the same points on GF-4 images with that on Google Earth images. The results show that there are obvious system errors in a single image. The image geo-positioning errors at the same point in staring imaging state are almost the same. The image geo-positioning errors under the pitch and rolling attitudes are proportional to the pitch and rolling angles. The conclusion can provide the data correction and application reference information to the ground data processing department and users.

Key words: GF-4 satellite, different imaging conditions, geo-positioning error, characteristic analysis, staring imaging

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