Acta Geodaetica et Cartographica Sinica ›› 2014, Vol. 43 ›› Issue (9): 954-959.doi: 10.13485/j.cnki.11-2089.2014.0128

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Drift Angle Residual Corrrection Technology in Satellite Photogrammetry

WANG Jianrong1,2,3,WANG Renxiang2,3,,HU Xin2,3,   

  1. 1. Chang’an University
    3. Xi’an Institute of Surveying and Mapping
    5. National Key Laboratory of Geo-Information Engineering
  • Received:2013-12-11 Revised:2014-06-23 Online:2014-09-20 Published:2014-09-25
  • Contact: WANG Jianrong E-mail:jianrongwang@sina.com

Abstract:

Based on the stereo image photography mechanism, the paper analyzes the vertical parallax caused by drift angle correction technical measures,and establishes the Mathematical model for residual of drift angle of stereo camera. It derives the error equation that can calculate the drift angle residual’s influence on vertical parallax, and put forward solutions from the aspects of camera parameters on-orbit calibration and error compensation of low frequency in bundle adjustment. The theoretical analysis and practical test with real satellite images shows that the correction residual of drift angle has a relatively great influence on vertical parallax, and it must be corrected through camera parameters on-orbit calibration and error compensation of low frequency, so that the accuracy of positioning without ground control point on a global scale can be maintained.

Key words: satellite photogrammetry, drift angle, camera calibration, positioning without ground control points, error compensation of low frequency