Position and Orientation System for Direct Georeferencing (POS/DG)

D.B. Reid, E. Lithopoulos and Joe Hutton

Abstract:	The Position and Orientation System for Direct Georeferencing (POS/DG) is an off-the-shelf integrated GPS/inertial system designed specifically for airborne applications. It performs high quality measurements of position and orientation of an airborne sensor. Using an Inertial Measurement Unit (IMU) as the primary sensor, POS/DG achieves measurement accuracies of about 10 to 20 cm (RMS) in position and 20 to 30 arc seconds (RMS) in attitude. POS/DG is used with airborne sensors requiring high-accuracy attitude measurements such as aerial cameras, multispectral scanners, laser scanners and digital cameras. POS/DG’s performance enables the direct georeferencing of aerial imagery to about 20 to 30 cm without aerial triangulation and ground control. The elimination of the aerotriangulation process translates to large savings in post-processing, data turn-around and flying time. The application of POS/DG to digital aerial cameras is discussed and flight test results are presented.
Published in:	Proceedings of the 54th Annual Meeting of The Institute of Navigation (1998) June 1 - 3, 1998 The Adams Mark Hotel Denver, CO
Pages:	445 - 449
Cite this article:	Reid, D.B., Lithopoulos, E., Hutton, Joe, "Position and Orientation System for Direct Georeferencing (POS/DG)," Proceedings of the 54th Annual Meeting of The Institute of Navigation (1998), Denver, CO, June 1998, pp. 445-449.
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