@inproceedings{oai:jaxa.repo.nii.ac.jp:00020349, author = {原田, 雄司 and 岩田, 隆浩 and 菊池, 冬彦 and 荒木, 博志 and 石原, 吉明 and 佐々木, 晶 and 野田, 寛大 and 花田, 英夫 and 松本, 晃治 and Harada, Yuji and Iwata, Takahiro and Kikuchi, Fuyuhiko and Araki, Hiroshi and Ishihara, Yoshiaki and Sasaki, Sho and Noda, Hirotomo and Hanada, Hideo and Goossens, Sander and Matsumoto, Koji}, book = {月・惑星シンポジウム, Proceedings of the ISAS lunar and planetary symposium}, month = {Aug}, note = {第42回 月・惑星シンポジウム(2009年8月5-7日, 宇宙航空研究開発機構宇宙科学研究本部), The 42nd ISAS Lunar and Planetary Symposium (August 5-7, 2009. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)), Sagamihara, Kanagawa Japan, At present, a multi-satellite mission to Mars called MELOS (i.e. Mars Exploration with Lander-Orbiter Synergy) is under study. An instrument called iVLBI (i.e. Inverse Very Long Baseline Interferometry) has been proposed as one of the instruments in this project. This instrument will allow us to carry out precise measurements on Mars' rotation (e.g. precession, nutation, polar motion, and length-of-day variation) through a radio link between the satellites and station(s) on the Earth. Researchers and technicians mainly in National Astronomical Observatory of Japan (NAOJ) and Institute of Space and Astronautical Science (ISAS) are discussing this instrument, especially, its observation system and scientific effort. The aim of this presentation is to introduce the latter. We will show how we expand our knowledge of the surface environment, the internal structure, and their evolution on Mars by observing its rotational variation through iVLBI on MELOS as mentioned above., 形態: CD-ROM1枚, Note: One CD-ROM, 資料番号: AA0064739005}, pages = {22--25}, publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)}, title = {What do we know from Mars' rotation?}, volume = {42}, year = {2009} }