Advertisement

Vertical repeatability of GPS measurements in the Tsukuba GPS/MET dense-network campaigns

  • S. Shimada
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 128)

Abstract

The Global Positioning System (GPS) data observed in the Tsukuba 2000 and 2001 GPS/MET dense network campaigns were analyzed. In these campaigns about 75 GPS receivers were installed in a 20 × 20 km area with 1.5km – 3.0km intervals. The 2000 campaign was carried out late fall for 31 days and the 2001 campaign in the summer season for 53 days. GAMIT/GLOBK GPS analyzing software was applied to the analysis. In the analysis of the Tsukuba 2000 campaign data, the time variation of the vertical component changed simultaneously at all the sites, making the correlated motion among the campaign sites. It might be attributed to the fact that constraints on the vertical component of Tsukuba IGS site (TSKB), a fiducial site of the campaign, were too loose. The variation was in the range of 20 – 30 mm with a one-sigma repeatability of 4 – 7 mm. When we examine the vertical component of the baseline vectors of each site with reference to one site, TSKB, the time variation of the vertical components with reference to the TSKB site was much smaller than for single stations. The time variation was in the range of 10 – 20 mm with the one-sigma repeatability of 2 – 6 mm. in this case for the 2000 campaign. The repeatability of the baseline vector among the network sites had a weak dependency on the baseline length, with the zero length repeatability of 3.17 mm and a baseline length dependency of 0.11 ppm. Meanwhile, in the 2001 campaign, the time variation of the baseline height was around 10 mm and almost random. The relationship between the baseline length and vertical repeatability of the baseline vector among the network sites was strong, with the zero length repeatability of 3.36 mm and the baseline dependency of 0.17 ppm during the 2001 campaign.

Keywords

Global Positioning System Dense-network campaign Vertical positioning 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Aonashi, K., T. Iwabuchi, Y. Shoji, R. Ohtani, and R. Ichikawa, 2003: Statistical study on precipitable water content variations observed with ground-based microwave radiometers, Proc. Int. Workshop GPS Meteor., Tokyo, Japan.Google Scholar
  2. Iwabuchi, T., Y. Shoji, S. Shimada, H. Nakamura, H. Seko, and K. Aonashi, 2003: Tsukuba GPS dense net campaign observation: Comparison and evaluation of slant wet delays estimated in three types of software, Proc. Int. Workshop GPS Meteor., Tokyo, Japan.Google Scholar
  3. Dong, D., T. A. Herring, and R. W. King, 1998: Estimating regional deformation from a combination of space and terrestrial geodetic data, J. Geod., 72, 200–214.CrossRefGoogle Scholar
  4. Hatanaka, Y., M. Sawada, A. Horita, M. Kusaka, J. M. Johnson, and C. Rocken, 2001: Calibration of antenna-radome and monument-multipath effect of GEONET — Part 2: Evaluation of the phase map by GEONET data, Earth Planets Space, 53, 23–30.Google Scholar
  5. Hatanaka, Y., T. lizuka, M. Sawada, A. Yamagiwa, Y. Kikuta, J. M. Johnson, and C. Rocken, 2003: Improvement of the analysis strategy of GEONET, Bull. Geograph. Survery Inst., 49, 11–37.Google Scholar
  6. Herring, T. A., 2002: GLOBK global Kalman fiter VLBI and GPS analysis program, Mass. Inst. of Technol., Cambridge, Massachesetts.Google Scholar
  7. King, R. W., and Y. Bock, 2002: Documentation for the GAMIT GPS analysis software, Mass. Inst. of Technol., Cambridge, Massachusetts.Google Scholar
  8. Larson, K. M., P. Cervelli, M. Lisowski, A. Miklius, P. Segall, and S. Owen, 2001: Volcano monitoring using the Global Positioning System: Filtering strategies, J. Geophys. Res., 206, 19453–19464.CrossRefGoogle Scholar
  9. Shoji, Y., H. Nakamura, T. Iwabuchi, K. Aonashi, H. Seko, K. Mishima, A. Itagaki, R., Ichikawa, R. Ohtani, 2003a: Tsukuba GPS dense net campaign observation: Improvement of GPS analysis of slant path delay by stacking one-way postfit phase residuals, Proc. Int. Workshop GPS Meteor., Tokyo, Japan.Google Scholar
  10. Shoji, Y., K. Aonashi, H. Nakamura, R. Ohtani, T. Iwabuchi, R. Ichikawa, 2003b: Tsukuba GPS dense net campaign observation: analysis of slant water vapor by GPS and comparison with water vapor radiometer, Proc. Int. Workshop GPS Meteor., in Tokyo, Japan.Google Scholar
  11. Tregoning, P., A. Welsh, H. McQueen, and K. Lambeck, 2000: The search for postglacial rebound near the Lambert Glacier, Antarctica, Earth, Planets Space, 52, 1037–1041.Google Scholar
  12. Yamagiwa, A., and Y. Hatanaka, 2003: Mapping functions generated from numerical model and their impact on seasonal variations in GPS analysis, Proc. Int. Workshop GPS Meteor., Tokyo, Japan.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • S. Shimada
    • 1
  1. 1.Solid Earth Research GroupNational Research Institute for Earth Science and Disaster PreventionTsukuba-Shi, Ibaraki-KenJapan

Personalised recommendations