Direct Platform Orientation with Tightly Integrated GPS/INS in Airborne Applications

Dorota A. Grejner-Brzezinska

Abstract:	Optimal combination of the Global Positioning System (GPS) and Inertial Navigation System (INS) allows for direct platform orientation and positioning, offering a possibility of relaxing the demand for aerotriangulation in airborne surveying/mapping. The performance of the prototype of the Airborne Integrated Mapping System (AIMST~, based on GPS/INS/CCD integration, developed by The Ohio State University Center for Mapping, is investigated in this paper. A brief description of the essential features of the integrated system and its practical implementation is presented. The performance of AIMSTM was primarily assessed based on the photogrammetric processing of 1:6,000 large-scale aerial imagery considered as a truth reference. An accuracy analysis and discussion of the impact of direct orientation on the photogrammetric data extraction process are also addressed. To illustrate the potential of multisensory data acquisition integration for large-scale mapping, a recent experiment, combining GPS/INS, frame CCD camera, and a hyperspectral linear scanner, performed in cooperation with NASA Stermis Space Center, is also presented in this paper.
Published in:	Proceedings of the 11th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1998) September 15 - 18, 1998 Nashville, TN
Pages:	885 - 894
Cite this article:	Grejner-Brzezinska, Dorota A., "Direct Platform Orientation with Tightly Integrated GPS/INS in Airborne Applications," Proceedings of the 11th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1998), Nashville, TN, September 1998, pp. 885-894.
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