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A VDLL Approach to GNSS Cell Positioning for Indoor Scenarios

Nunes, F. ; Sousa, F. ; Delgado, N.

A VDLL Approach to GNSS Cell Positioning for Indoor Scenarios, Proc Institute of Navigation GPS/GNSS Conf., Savannah, United States, Vol. 1, pp. 1690 - 1699, September, 2009.

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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.