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Block Adjustment with GPS/INS in Aerial Photogrammetry  

Park Woon Yong (동아대학교 토목해양공학부)
Lee Kang Won (충남대학교 토목공학과)
Lee Jae One (대한측량협회)
Jeong Gong Uhn (대흥 Eng)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.22, no.3, 2004 , pp. 285-291 More about this Journal
Abstract
GPS photogrammetry or the GPS/INS photogrammetry, which are based on the direct measurement of the projection centers and attitude at the moment of camera exposure time through loading the GPS receiver or INS in aircraft. Both photogrammetric methods can offer us to acquire the exterior orientation parameters with only minimum ground control points, even the ground control process could be completely skipped. Consequently, we can drastically reduce the time and cost for the mapping process. In this thesis, test flight was conducted in Suwon area to evaluate the performance of accuracy and efficiency through the analysis of results among the three photogrammetric methods, that is, traditional photogrammetry, GPS photogrammetry and GPS/INS photogrammetry. Test results shows that a large variety of advantages of GPS photogrammetry and GPS/INS photogrammetry against traditional photogrammetry is to be verified. Especially, the number of ground control points for the exterior orientation could be saved more than 70~80%, respectively.
Keywords
Aerial Photogrammetry; Exterior orientation; Global Positioning System; Inertial Navigation System; Georeferencing;
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  • Reference
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