Photogrammetric Modeling of KOMPSAT Stereo Strips Using Minimum Control

  • Yoo, Hwan-Hee (Department of Urban Engineering, ERI, Gyeongsang National University) ;
  • Sohn, Hong-Gyoo (School of Civil &Environmental Engineering, Yonsei University) ;
  • Kim, Seong-Sam (Department of Urban Engineering, Gyeongsang National University) ;
  • Jueng, Joo-Kweon (Department of Urban Engineering, Gyeongsang National University)
  • Published : 2002.09.01

Abstract

This paper describes an experiment for three-dimensional positioning for a pair of KOMPSAT stereostrips using the ancillary data and a single ground control point. The photogrammetric model for three-dimensional positioning was performed as follows: first, initialization of orbital and attitude parameters derived from ancillary data; second, adjustment of orbital and attitude parameters for the satellite to minimize the ground position error with respect to a GCP using the collinearity condition; third, determination of actual satellite position; and lastly, space intersection. This model was tested for a pair of stereo strips with 0.6 base-to-height ratio and GCPs identified from a 1:5,000 scale digital map. As the result, the satellite position of offset was corrected by only one GCP and the accuracy for the geometric modeling showed 38.89m RMSE.

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