GPS Multipath Change Detection in Permanent GPS Stations

نویسندگان

  • Linlin Ge
  • Shaowei Han
  • Chris Rizos
  • Yuki Hatanaka
چکیده

A technique based on an adaptive filter using the least-mean-square algorithm is proposed for detection of multipath change in permanent, continuously operating GPS (CGPS) stations. The technique has been tested on some experimental data, indicating that the multipath change above the receiver noise level can be detected. Further tests have been conducted with some CGPS data from the Japanese GEONET when there was a snowfall. The results show that when there is a change in the antenna environment it will indeed be detected in both the pseudo-range and carrier phase data. This technique provides an easy-to-implement, quality assurance tool for CGPS antenna environmental sensing after events such as typhoons, cyclones, snowfalls, volcano eruptions, earthquakes, etc. Other possible applications include the monitoring of slope stability and ground subsidence.

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تاریخ انتشار 2000