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Improvement of JGEOID 93 by the Geoidal Heights Derived from GPS/Leveling Survey

  • Yoichi Fukuda
  • Jiro Kuroda
  • Yoshiyuki Takabatake
  • Junichi Itoh
  • Makoto Murakami
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 117)

Abstract

A very dense GPS/Leveling survey along the first order precise leveling routes in Japan has been conducted by the Geographical Survey Institute (GSI). Since the results obtained are geoid heights which are completely independent of the gravimetric geoid and are considered to be more accurate, at least in long wavelength signals, than the gravimetric one, they can be used for evaluation and/or improvement of an existing gravimetric geoid.

In this study, we first made a comparison between the latest gravimetric geoid of GSI (JGEOID 93) and the GPS/Leveling geoid, and estimated correction values for the gravimetric geoid by means of the Least Squares Collocation (LSC) method. The final result shows that the RMS difference between the GPS/Leveling geoid and the gravimetric geoid after the correction is better than 7 cm in all survey areas.

Keywords

Geoid Model Geoid Undulation Orthometric Height Ellipsoidal Height Gravimetric Geoid 
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.

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References

  1. Kuroda, J., J. Takabatake, M. Murakami and Y. Fukuda (1997). Integration of Gravimetric Geoid and GPS/Leveling Survey by Least Square Collocation, Biannual Report of the Geographical Survey Institute, in press (in Japanese).Google Scholar
  2. Kuroishi, Y. (1995). Precise Gravimetric Determination of Geoid in the Vicinity of Japan, Bull. Geogr. Surv. Inst., 41, 1–93.Google Scholar
  3. Tscherning, C.C. and R. H. Rapp (1994). Closed covariance expression for gravity anomalies, geoid undulations and deflection of the vertical implied by anomaly degree variance models, Dep. of Geod. Sci. Ohio State Univ., Rep. 208, 1–89.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • Yoichi Fukuda
    • 1
  • Jiro Kuroda
    • 2
  • Yoshiyuki Takabatake
    • 2
  • Junichi Itoh
    • 2
  • Makoto Murakami
    • 2
  1. 1.Department of Geophysics, Graduate School of ScienceKyoto UniversitySakyo-ku, KyotoJapan
  2. 2.Geodetic DepartmentThe Geographical Survey InstituteTsukuba, Ibaraki 305Japan

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