Research of Nonlinearity Effects Based on Indoor-pseudolite Positioning System

X. Wan, X. Zhan, C. Zhai, J.J. Dou

Abstract:	In many pseudolite systems which recently have been proposed and tested for indoor navigation, the same measurement model is still used to precisely determine the rover’s position as in conventional GPS relative positioning. Linearization is a necessary step of most positioning algorithms for the nonlinear model. Because distances between pseudolites and rovers are shorter than those in conventional GPS positioning scenario, effects of linearization on positioning algorithm may not be ignored under some conditions. In this paper, effects of nonlinearity on convergence and accuracy in indoorpseudolite positioning system were studied. Then the methods which may minimize the effects are compared with each other, and an improved method is used for the indoor-pseudolite positioning system.
Published in:	Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010) September 21 - 24, 2010 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	496 - 503
Cite this article:	Wan, X., Zhan, X., Zhai, C., Dou, J.J., "Research of Nonlinearity Effects Based on Indoor-pseudolite Positioning System," Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010), Portland, OR, September 2010, pp. 496-503.
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