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论文类型：期刊论文

发表时间：2012-06-01

发表刊物：MEASUREMENT

收录刊物：SCIE、EI

卷号：45

期号：5

页面范围：1126-1139

ISSN号：0263-2241

关键字：Global positioning system; Multipath effect; Dielectric constant; Particle filtering algorithm

摘要：The GPS carrier phase observations are widely used for the high precision static and kinematic positioning applications. However, GPS signals are seriously distorted when passing through walls and other obstructions. This paper focuses on this issue and outlines the research carried out to investigate the effects of some commonly used construction materials on the GPS signals. For the purpose of generating the multipath in a controlled manner, an experimental set-up is designed to test the effect of typical building surface materials (toughened glass, wood board, PVC board and ceramic tile) on positioning accuracy. The effects of signal attenuation on the accuracy of the positioning solution are explored by an improved particle filtering algorithm and some statistical methods, and reasons for these effects are further analyzed. The findings of the experimental results may be used to enhance the performance of GPS technology. (C) 2012 Elsevier Ltd. All rights reserved.