|
|||||
|
|
Site-specific multipath characteristics of global IGS and CORS GPS sites |
|
| Authors: | |
| Institution: | (1) Harvard-Smithsonian Center for Astrophysics, 60 Garden St. MS 42, Cambridge, MA 02138, USA;(2) Colorado Center for Astrodynamics Research, Department of Aerospace Engineering Sciences, University of Colorado, Campus Box 431, Boulder, CO 80309, USA;(3) NOAA;N/NGS6, 1315 East-West Highway, Silver Spring, MD 20910, USA;(4) Korea Astronomy Observatory, 61-1 Hwaam-dong Yuseong-gu, Daejeon, 305-348, South Korea;(5) College of Forest Science, Kookmin University, 861-1 Chongnung-dong Songbuk-gu, Seoul, 136-702, South Korea |
| Abstract: | The site-specific multipath characteristics of 217 Global Positioning System (GPS) sites worldwide were analyzed using the variability of the post-fit phase residuals. Because the GPS satellite constellation returns to the same configuration in a sidereal day (23 h 56 min 4 s), the multipath repeats on that period. However, daily GPS position estimates are usually based on the solar day. When several days of GPS data are processed, this steady change in the orientation of the satellite constellation with respect to the station manifests itself in the form of patterns in the post-fit phase residuals which shift by 3 min 56 s per day. It was found that the mean root mean square of the time-shifted post-fit phase residuals is highly dependent on the GPS antenna type. The conclusions derived from the analysis of the time-shifted post-fit residuals were verified by performing a cross-correlation of the post-fit residuals across many days for selected sites. |
| Keywords: | GPS Multipath Post-fit phase residuals |
| 本文献已被 SpringerLink 等数据库收录！ | |