A new hybrid geoid model for Japan, GSIGEO2000 |
| |
| Authors: | Y Kuroishi H Ando Y Fukuda |
| |
| Institution: | (1) Geographical Survey Institute, 1 Kitasato, Tsukuba, Ibaraki 305-0811, Japan e-mail: yuki@gsi.go.jp; Tel : +81-298-64-6280; Fax: +81-298-64-2655, JP;(2) Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan, JP |
| |
| Abstract: | The latest gravimetric geoid model for Japan, JGEOID2000, was successfully combined with the nationwide net of GPS at benchmarks,
yielding a new hybrid geoid model for Japan, GSIGEO2000. The least-squares collocation (LSC) method was applied as an interpolation
for fitting JGEOID2000 to the GPS/leveling geoid undulations. The GPS/leveling geoid undulation data were reanalyzed in advance,
in terms of three-dimensional positions from GPS and orthometric heights from leveling. The new hybrid geoid model is, therefore,
compatible with the new Japanese geodetic reference frame. GSIGEO2000 was evaluated internally and independently and the precision
was estimated at 4 cm throughout nearly the whole region.
Received: 15 October 2001 / Accepted: 27 March 2002
Acknowledgments. Messrs. Toshio Kunimi and Tadashi Saito at the Third Geodetic Division of the Geographical Survey Institute (GSI) mainly
carried out the computations of most of the updated leveled heights. With regard to the reanalysis of GPS data, the discussions
with Messrs. Yuki Hatanaka and Shoichi Matsumura of GSI were of great help in building the analysis strategy. Messrs. Kazuyuki
Tanaka and Hiromi Shigematsu collaborated in the preparatory stages of GPS data computation. The authors' thanks are extended
to these colleagues. Some plots were made by GMT software (Wessel and Smith 1991).
Correspondence to: Y. Kuroishi |
| |
| Keywords: | : Hybrid geoid model – Gravimetric geoid model JGEOID2000 – GPS/leveling geoid undulations – Least-squares collocation |
| 本文献已被 SpringerLink 等数据库收录！ |
|
