Positioning Accuracy of the GPSVan

Dorota A. Grejner-Brzezinska

Abstract:	The GPSVanTM technology (Fig. 1) developed over the past five years at the Center for Mapping at The Ohio State University has been utilized in a variety of surveying applications. One of the most demanding tasks that this technology faced recently was to determine the coordinates of features along the Burlington Northern Santa Fe Corporation (BNSF) to sub-meter accuracy.’ Features that were mapped include adjacent tracks, switches and other items of interest to BNSF [Bossler and Toth, 1995; Blaho and Toth, 1995-J This paper discusses field and post-processing procedures implemented in the Global Positioning System (GPS)/Dead Reckoning (DR) positioning module and the stereo vision module of the GPSVariTM, and accuracies obtained using this technology. Integrated with GPS and DR data are measurements of image coordinates which are transformed to coordinates on the ground (object space). The comparison of the photogrammetrically derived coordinates of the features with ground truth, obtained using static GPS observations yields the final accuracy of the system, as presented in section 5.
Published in:	Proceedings of the 52nd Annual Meeting of The Institute of Navigation (1996) June 19 - 21, 1996 Royal Sonesta Hotel Cambridge, MA
Pages:	657 - 665
Cite this article:	Grejner-Brzezinska, Dorota A., "Positioning Accuracy of the GPSVan," Proceedings of the 52nd Annual Meeting of The Institute of Navigation (1996), Cambridge, MA, June 1996, pp. 657-665.
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