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Indexed by:会议论文

Date of Publication:2010-09-06

Included Journals:EI、Scopus

Page Number:1153-1156

Abstract:The Global Positioning System (GPS) has been used in the health monitoring of large scale structures in recent years since it is weather independent, capable of autonomous operation, and does not require a line-of-sight between target points. However, GPS electromagnetic signals are attenuated when passing through walls and other obstructions. This paper outlines the research carried out to test the effects of some commonly used construction materials on the carrier phase signals. By comparison, it  s shown that the multipath errors caused by reflecting objects at different distances have certain regularity; the multipath errors reduce with the distances increase, and the reduction gets smaller when the same distance is increased. Reasons for these effects have been explored based on the properties of the tested materials. ? 2010 Taylor & Francis Group, London.