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VLBI for better gravimetry in SELENE |
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| Authors: | H Hanada T Iwata N Namiki N Kawano K Asari T Ishikawa F Kikuchi Q Liu K Matsumoto H Noda S Tsuruta S Goossens K Iwadate O Kameya Y Tamura X Hong J Ping Y Aili S Ellingsen W Schlüter |
| Institution: | 1. National Astronomical Observatory of Japan, 2-12 Hoshigaoka, Mizusawa, Oshu, Iwate 023-0861, Japan;2. Japan Aerospace Exploration Agency/Institute of Space and Astronautical Science, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan;3. Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan;4. Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China;5. Urumqi Astronomical Observatory, Chinese Academy of Sciences, No. 40-5 South Beijing Road, Urumqi, Xingjiang 830011, China;6. University of Tasmania, Private Bag 37, Hobart, Tasmania 7001, Australia;g Bundesamt für Kartographie und Geodäsie, Fundamentalstation Wettzell, D-93444 Kötzting, Germany |
| Abstract: | The Japanese lunar explorer SELENE (SElenological and Engineering Explorer), to be launched in 2007, will for the first time utilize VLBI observations in lunar gravimetry investigations. This will particularly improve the accuracy to which the low degree gravitational harmonics and the gravity field near the limb can be measured, and when combined with Doppler measurements will enable three-dimensional information to be extracted. Differential VLBI Radio sources called VRAD experiment involves two on-board sub-satellites, Rstar and Vstar. 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. |
| Keywords: | SELENE Lunar gravity field VLBI |
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