Regional Orbit Improvement Techniques Applied to a Japanese Fixed-Point GPS Network

  • Seiichi Shimada
  • Yehuda Bock
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 109)


Bock and Shimada (1990) introduced the concept and some experimental examples of the GPS fixed-point networks for deformation measurements. The measurement applying such a fixed-point GPS network is one of the promising technique to monitor crustal movements for the purpose of geodynamic study. The Kanto-Tokai ten-point dedicated, GPS fixed-point network (NIED network) in central Japan is the first one of those networks in the world, established in April 1988 (Shimada et al., 1989). Shimada and Bock (1991) estimated the positions of the NIED network sites with respect to the terrestrial reference frame using world-wide GPS tracking data collected during the Global Orbit Tracking Experiment (GOTEX-1) campaign carried out in November 1988. They then computed the positions of the network stations from the first sixteen months of network data by applying weighted constraints on the site positions and on the available satellite ephemerides (“regional orbit improvement techniques”) and a simultaneous two-session analysis for each data window, and obtained crustal deformations during the initial sixteen months of data. In the analysis, they used the GAMIT GPS software developed at Massachusetts Institute of Technology and Scrips Institution of Oceanography (King and Bock, 1991). They demonstrated the validity of the regional orbit improvement techniques for the fixed-point regional network, reducing the cost required to obtain the regional deformations and the measurement error caused by the broadcast orbit ephemeris.


Network Site Satellite Laser Range Terrestrial Reference Frame Seismic Swarm Baseline Vector 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Beutler, G. I. Bauersima, S. Botton, W. Gurtner, M. Rothacher, and T. Schildknecht, Accuracy and biases in the geodetic application of the Global Positioning System, Manuscripta Geodaetica, 14, 28–35, 1989.Google Scholar
  2. Bock, Y., R. I. Abbot, C. C. Counselman III, S. A. Gourevitch and R. W. King, Establishment of three-dimensional geodetic control by interferometry with the Global Positioning System, J. Geophys. Res, 90, 7689–7703, 1985CrossRefGoogle Scholar
  3. Bock, Y., and S. Shimada, Continuously monitoring GPS network for deformation measurements, in Global Positioning System: An Overview, edited by Y. Bock and N. Leppard, Springer-Verlag, New York, 40–56, 1990.Google Scholar
  4. CSTG, GPS Bulletin, Vol. 1, No.3, Int. Assoc. of Geod. CSTG GPS Subcomm., 1, 1988Google Scholar
  5. CSTG, GPS Bulletin Vol.2, No.6, Int. Assoc. of Geod. CSTG GPS Subcomm., 4–6, 1990Google Scholar
  6. Davis, J. L., W. H. Prescott, J. L. Svarc, and K. J. Wendt, Assessment of Global Positioning System measurements for studies of crustal deformation, J. Geophys. Res., 94, 13,635–13,650, 1989.CrossRefGoogle Scholar
  7. DeMets, C., R. G. Gordon, D. F. Argus, and S. Stein, Current plate motions, Geophys. J. Int., 101, 425–478, 1990.CrossRefGoogle Scholar
  8. Dong, D., and Y. Bock, Global Positioning System network analysis with phase ambiguity resolution applied to crustal deformation studies in California, J. Geophys. Res., 94, 3949–3966, 1989.CrossRefGoogle Scholar
  9. Fujii, Y., and K. Nakane, Horizontal crustal movement in Kanto-Tokai District (VIII) — tectonic strain field —, J. Geod. Soc. Japan, 28, 220–229, 1982.Google Scholar
  10. Geographical Survey Institute, Horizontal strain in Japan, 1985–1883, 113–115pp., Assoc. for Development Earthquake Prediction, Tokyo, Japan, 1987.Google Scholar
  11. Geographical Survey Institute, Crustal movements in the Izu Peninsula and its vicinity (in Japanese), Rep. Coordinating Commit, for Earthquake Prediction, 44, 175–192, 1990Google Scholar
  12. King, R. W., and Y. Bock, Documentation for the MIT GPS Analysis Software, Massachusetts Institute of Technology, 1991.Google Scholar
  13. Murray, M. H., R. W. King, and P. J. Morgan, SV5: a terrestrial reference frame for monitoring crustal deformation with the Global Positioning System, EOS, Trans. Amer. Geophys. Union, 69, 323, 1990.Google Scholar
  14. Murray, M. H., Global Positioning System measurement of crustal deformation in central California, Ph.D. Thesis, Massachusetts Institution of Technology, 223pp., 1991.Google Scholar
  15. Remondi, B. W, and B. Hofmann-Wellenhof, GPS broadcast orbits versus precise orbits: a comparison study, GPS Bull., Vol.2, No.6, pp. 8–20, Comm. VIII Int. Coordination Space Tech. Geod. Geodynamics, 1989.Google Scholar
  16. Seno, T., T. Moriyama, S. Stein, D. F. Woods, C. DeMets, D. Argus, and R. Gordon, Redetermination of the Philippine Sea plate motion, Eos Trans. AGU, 68, 1474, 1987.Google Scholar
  17. Shimada. S, S. Sekiguchi, T. Eguchi, Y. Okada and Y. Fujinawa, Preliminary results of the observation by fixed-point GPS simultaneous baseline determination network in Kanto-Tokai district, J. Geod. Soc. Japan, 55, 85–95, 1989.Google Scholar
  18. Shimada. S, Y. Fujinawa, S. Sekiguchi, S. Ohmi, T. Eguchi, and Y. Okada, Detection of a volcanic fracture opening in Japan using Global Positioning System measurements, nature, 343, 631–633,1990.CrossRefGoogle Scholar
  19. Tada, T., and M. Hashimoto, Anomalous crustal deformation in the northeastern Izu Peninsula and its tectonic significance — tension crack model —, J. Phys. Earth, 39, 197–218, 1991.CrossRefGoogle Scholar
  20. Thatcher, W., and T. Matsuda, Quaternary and geodetically measured crustal movements in the Tokai district, Central Honshu, Japan, J. Geophys. Res., 86, 9237–9247, 1981.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • Seiichi Shimada
    • 1
  • Yehuda Bock
    • 2
    • 3
  1. 1.National Research Institute for Earth Science and Disaster Prevention (NIED)Ibaraki 305Japan
  2. 2.Institute of Geophysics and Planetary PhysicsScripps Institution of OceanographyLa JollaUSA
  3. 3.Jet Propulsion LaboratoryPasadenaUSA

Personalised recommendations