Robust First Fix Performance in Urban Areas

Y-C. Chien, W.G. Yau, C.T. Weng

Abstract:	This paper demonstrates how to make a good evaluation for a GNSS receiver having robust first fix performance in urban areas. To evaluate the performance, traditionally, one usually employs only static scenarios or some dynamic scenarios using signal simulator in a laboratory. However, a good first fix performance in such lab scenarios often does not represent a good performance for actual driving in urban areas. This paper evaluates the performance of the designed receiver and most up-to-date receivers with realistic database comprising rich scenarios collected in different urban areas with combinations of environments and satellite constellations. Results demonstrate that estimating and comparing of the benchmark receivers in both time to first fix (TTFF) and first fix accuracy. The designed receiver outperforms others in both TTFF and first fix accuracy.
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:	1068 - 1072
Cite this article:	Chien, Y-C., Yau, W.G., Weng, C.T., "Robust First Fix Performance in Urban Areas," Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010), Portland, OR, September 2010, pp. 1068-1072.
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