In indoor environments the accuracy of positioning by global navigation satellite systems suffers significantly from signal blockage, reflection and diffraction. To develop advanced receiver position algorithms working in harsh propagation environments, accurate channel simulators are necessary. Therefore, DLR investigated the satellite-to-indoor propagation channel in its very detail by a measurement campaign in 2008. As an outcome, we proposed a novel and accurate wideband satellite-to-indoor channel model. Compared to the state of the art, the proposed channel model is able to reproduce the spatial characteristics of the wideband propagation channel for a moving receiver. The model is based on a hybrid approach combining physical-deterministic and stochastic methods: (a) waves diffracted and transmitted by walls, windows and doors are considered by using physical-deterministic near field methods, (b) in order to model multipath components occurring due to reflections on walls, a hybrid approach is used, (c) the behavior of scattered waves is stochastically modeled. The proposed channel model accurately models satellite-to-indoor propagation effects, and, thus, can be used for testing and validating range estimation algorithms for positioning.
Download Satellite-to-Indoor Channel Simulator (Matlab M-Files) .rar Further information in readme.txt Terms of a Licence: GNU GENERAL PUBLIC LICENSE Version 2 Copyright © 2005 Deutsches Zentrum für Luft- und Raumfahrt e.V. German Aerospace Centre
The following publications describe the modeling approach for the satellite-to-indoor propagation channel:
ITU P.681-10 Propagation data required for the design of Earth-space land mobile telecommunication systems Dec. 2017
ITU Report P.2145-2, Model parameters for the physical-statistical wideband models in Recommendation ITU-R P.681 September 2017
T. Jost, Satellite-to-Indoor Wave Propagation for Positioning Applications ser. Kommunikationstechnik. Verlag Dr. Hut, 2014, PhD dissertation University of Vigo
T. Jost, W. Wang, U.-C. Fiebig, and F. Pérez-Fontán A Wideband Satellite-to-Indoor Channel Model for Navigation Applications IEEE Trans. Antennas Propag., vol. 62, no. 10, pp. 5307-5320, Oct. 2014 [ELIB]
T. Jost, G. Carrié, F. Pérez-Fontán, W. Wang, and U.-C. Fiebig A Deterministic Satellite-to-Indoor Entry Loss Model [ELIB] IEEE Trans. Antennas Propag., vol. 61, no. 4, pp. 2223-2230, Apr. 2013
The further publications describe the measurement campaign and the data analysis:
T. Jost, W. Wang, U.-C. Fiebig, and F. Pérez-Fontán Detection and Tracking of Mobile Propagation Channel Paths IEEE Trans. Antennas Propag., vol. 60, no. 10, pp. 4875-4883, Oct. 2012 [ELIB]
W. Wang and T. Jost A Low-Cost Platform for Time-Variant Wireless Channel Measurements With Application to Positioning IEEE Trans. Instrum. Meas., vol. 61, no. 6, pp. 1597-1604, June 2012 [ELIB]
T. Jost, W. Wang, U.-C. Fiebig, and F. Pérez-Fontán Movement of Equivalent Scatterers in Geometry-Based Stochastic Channel Models IEEE Antennas Wireless Propag. Lett., vol. 11, pp. 555-558, May 2012 [ELIB]
T. Jost, W. Wang, U.-C. Fiebig, and F. Pérez-Fontán Comparison of L- and C-Band Satellite-to-Indoor Broadband Wave Propagation for Navigation Applications IEEE Trans. Antennas Propag., vol. 59, no. 10, pp. 3899-3909, Oct. 2011 [ELIB]