Differential VLBI Observations of Two Sub-Satellites of SELENE (KAGUYA), OKINA and OUNA for Lunar Gravimetry
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- Hanada Hideo
- RISE Project, National Astronomical Observatory of Japan
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- Iwata Takahiro
- Japan Aerospace Exploration Agency / Institute of Space and Astronautical Science
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- Kikuchi Fuyuhiko
- RISE Project, National Astronomical Observatory of Japan
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- Liu Qinghui
- RISE Project, National Astronomical Observatory of Japan
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- Matsumoto Koji
- RISE Project, National Astronomical Observatory of Japan
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- Asari Kazuyoshi
- RISE Project, National Astronomical Observatory of Japan
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- Ishikawa Toshiaki
- RISE Project, National Astronomical Observatory of Japan
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- Ishihara Yoshiaki
- RISE Project, National Astronomical Observatory of Japan
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- Noda Hirotomo
- RISE Project, National Astronomical Observatory of Japan
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- Tsuruta Seiitsu
- RISE Project, National Astronomical Observatory of Japan
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- Petrova Natalia
- Kazan State University
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- Goossens Sander
- RISE Project, National Astronomical Observatory of Japan
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- Harada Yuji
- RISE Project, National Astronomical Observatory of Japan
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- Sasaki Sho
- RISE Project, National Astronomical Observatory of Japan
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- Namiki Noriyuki
- Department of Earth and Planetary Sciences, Kyushu University
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- Kono Yusuke
- VSOP-2 Project Office, National Astronomical Observatory of Japan
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- Iwadate Kenzaburo
- Mizusawa VERA Observatory, National Astronomical Observatory of Japan
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- Kameya Osamu
- Mizusawa VERA Observatory, National Astronomical Observatory of Japan
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- Jike Takaaki
- Mizusawa VERA Observatory, National Astronomical Observatory of Japan
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- M Shibata Katsunori
- Mizusawa VERA Observatory, National Astronomical Observatory of Japan
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- Tamura Yoshiaki
- Mizusawa VERA Observatory, National Astronomical Observatory of Japan
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- Yahagi Yukihiro
- NEC Engineering, Ltd.
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- Masui Wataru
- NEC Corporation
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- Tanaka Koji
- Japan Aerospace Exploration Agency / Institute of Space and Astronautical Science
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- Maejima Hironori
- Japan Aerospace Exploration Agency / Institute of Space and Astronautical Science
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- Hong Xiaoyu
- Shanghai Astronomical Observatory, Chinese Academy of Sciences
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- Ping Jinsong
- Shanghai Astronomical Observatory, Chinese Academy of Sciences
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- Aili Yusufu
- Urumqi Astronomical Observatory, Chinese Academy of Sciences
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- Ellingsen Simon
- School of Mathematics & Physics, University of Tasmania
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- Schlüter Wolfgang
- Bundesamt für Kartographie und Geodäsie, Fundamentalstation Wettzell
Bibliographic Information
- Other Title
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- 月の重力場推定のための「かぐや」(SELENE)の2つの子衛星「おきな」と「おうな」の相対VLBI観測
- 月の重力場推定のための「かぐや」(SELENE)の2つの子衛星「おきな」の「おうな」の相対VLBI観測
- ツキ ノ ジュウリョクバ スイテイ ノ タメ ノ カグ ヤ SELENE ノ フタツ ノ コ エイセイ オキ ナ ノ オウ ナ ノ ソウタイ VLBI カンソク
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Abstract
The Japanese lunar explorer SELENE (KAGUYA), which has been launched on Sep. 14th, 2007, utilizes VLBI observations in lunar gravimetry investigations. This can particularly improve the accuracy of the low degree gravitational harmonics. Combination of ground based VLBI observations and Doppler measurements of the spacecrafts enable three dimensional orbit determinations and it can improve the knowledge of the gravity field near the limb. Differential VLBI Radio sources called VRAD experiment involves two on-board sub-satellites, Rstar (Okina) and Vstar (Ouna). These will be observed using differential VLBI to measure the trajectories of the satellites with the Japanese network named VERA (VLBI Exploration of Radio Astrometry) and an international VLBI network.<BR>Two new techniques, a multi-frequency VLBI method and the same-beam VLBI method, are used to precisely measure the angular distance between the two sub-satellite radio sources Okina and Ouna. The observations are at three frequencies in S-band, 2212, 2218 and 2287 MHz, and one in X-band, 8456 MHz. We have succeeded in making VLBI observations of Okina/Ouna with VERA and the international network, and have also succeeded in correlating of signals from Okina/Ouna, and obtained phase delays with an accuracy of several pico-seconds in S-band.
Journal
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- Journal of the Geodetic Society of Japan
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Journal of the Geodetic Society of Japan 55 (2), 203-221, 2009
The Geodetic Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204067431808
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- NII Article ID
- 10025592741
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- NII Book ID
- AN00134900
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- ISSN
- 2185517X
- 00380830
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- NDL BIB ID
- 10426979
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed