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A Helpful Positioning Method with Two GNSS Satellites in Urban Area

Authors:
Hiroyuki Hatano
Tomoya Kitani
Masahiro Fujii
Yu Watanabe
Hironobu Onishi

Keywords: GPS; Global Positioning System; GNSS; Localization; Multipath; NLOS; Shielded signals

Abstract:
For estimating user's location, Global Positioning System (GPS) is very popular and important technique. The GPS estimation uses satellites which fly in the air. The estimator needs the open sky and multiple satellites (usually 4 and more satellites). However, there are many buildings in urban area. The receiver tends to receive bad signals, called as non-line-of-sight (NLOS) or multipath signals. The problem is that the receiver cannot get direct path signals from adequate number of the satellites coinstantaneously. This case leads to degrade estimation quality. So, we introduce the novel estimation algorithm, which can estimate own position with as low number of satellites as possible.

Pages: 41 to 46

Copyright: Copyright (c) IARIA, 2013

Publication date: November 17, 2013

Published in: conference

ISSN: 2308-3468

ISBN: 978-1-61208-313-1

Location: Lisbon, Portugal

Dates: from November 17, 2013 to November 21, 2013