Small and Large Scale Spatial Characterization of GPS Indoor Signals

S. Satyanarayana, D. Borio, G. Lachapelle

Abstract:	The characterization of GPS signals indoors is gaining an increasing importance due to its innumerable applications in civilian market. The main focus of this paper is the spatial characterization of GPS signals indoors. First and second order statistics such as mean signal power levels, average fade durations, level crossing rates and mean fade distances are analyzed over small and large physical areas in several indoor environments. Empirical values are compared against standard parametric models. The envelopes of the received signals are decomposed into slow and fast fading components. It is shown that the slow fading components follow a log-normal distribution and the fast fading components a Rayleigh distribution. The different methodologies adopted for the analysis, their advantages/drawbacks and the obtained results are discussed showing that composite models are required for capturing the complexity of GPS indoor signal propagation.
Published in:	Proceedings of the 2011 International Technical Meeting of The Institute of Navigation January 24 - 26, 2011 Catamaran Resort Hotel San Diego, CA
Pages:	436 - 446
Cite this article:	Satyanarayana, S., Borio, D., Lachapelle, G., "Small and Large Scale Spatial Characterization of GPS Indoor Signals," Proceedings of the 2011 International Technical Meeting of The Institute of Navigation, San Diego, CA, January 2011, pp. 436-446.
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