A VDLL Approach to GNSS Cell Positioning for Indoor Scenarios

F.D. Nunes, F.M.G. Sousa, N. Blanco-Delgado

Abstract:	The Vector Delay Locked Loop (VDLL) is an alternative architecture for GNSS receivers, consisting of jointly tracking all the satellites in view, which presents several advantages regarding the conventional solutions that track each visible satellite separately. The problem with the VDLL approach is that it is difficult to incorporate side information about the receiver’s motion which is often available and would permit to improve the position estimates. Herein, we propose a new architecture for VDLL receivers based on the propagation of a set of adjacent space/time cells, where the motion constraints can be easily inserted through the assignment of cell transition probabilities in the prediction step. Cell selection is carried out at the updating step using the satellite signal measurements and a cell selection criterion.
Published in:	Proceedings of the 22nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2009) September 22 - 25, 2009 Savannah International Convention Center Savannah, GA
Pages:	1690 - 1699
Cite this article:	Nunes, F.D., Sousa, F.M.G., Blanco-Delgado, N., "A VDLL Approach to GNSS Cell Positioning for Indoor Scenarios," Proceedings of the 22nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2009), Savannah, GA, September 2009, pp. 1690-1699.
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