Spatial Antenna Diversity Performance for Indoor GNSS Applications

Seyed Nima Sadrieh

Abstract:	It is of interest to detect and acquire Global Navigation Satellite System (GNSS) signals in the indoors and dense attenuated multipath environments. To overcome the signal attenuation and fading, more processing gain is required. Increasing the coherent integration time is traditionally known as the main source of processing gain. However, the mobile user typically performs some motion while using the portable receiver, which limits the coherent integration gain. Diversity gain is another source of processing gain that can be used to alleviate the multipath fading phenomena. Herein considering the coherent integration time limit, a spatial diversity system composed of two antennas with 10 cm element spacing is designed and tested. Performance of this diversity scheme is compared with a single-branch receiver on three different levels, namely signal processing, measurements and position domain. A significant improvement is achieved when using diversity at all three levels.
Published in:	Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011) September 20 - 23, 2011 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	3984 - 3992
Cite this article:	Sadrieh, Seyed Nima, "Spatial Antenna Diversity Performance for Indoor GNSS Applications," Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011), Portland, OR, September 2011, pp. 3984-3992.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In