Geometric Correction of Airborne Multispectral Scanner Imagery Using GPS Position and Attitude and Digital Elevation Models

Lawrence Fisher

Abstract:	Multispectral scanners are valuable for environmental monitoring, but they suffer from severe geometric distor- tions and errors. We describe an approach to geocorrec- tion of multispectral scanner imagery that uses GPS position and attitude along with digital terrain data. An analysis of contributions of errors from various error sources is presented. Our approach to collection of data for post-processing geocorrection is discussed: We collect GPS attitude and three-dimensional positions (which are later differentially corrected), and derive and store accurate time information for each scan line. The hardware to accomplish this integration is explained. Later, attitude and position, along with digital terrain models, are used to calculate best estimates of pixel positions. Geocorrection mathematics and processing algorithms are given, and experimental results are shown.
Published in:	Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995) September 12 - 15, 1995 Palm Springs, CA
Pages:	1597 - 1606
Cite this article:	Fisher, Lawrence, "Geometric Correction of Airborne Multispectral Scanner Imagery Using GPS Position and Attitude and Digital Elevation Models," Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995), Palm Springs, CA, September 1995, pp. 1597-1606.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In