@inproceedings{oai:jaxa.repo.nii.ac.jp:00007515,
 author = {関戸, 衛 and 市川, 隆一 and 吉川, 真 and 望月, 奈々子 and 村田, 泰宏 and 加藤, 隆二 and 市川, 勉 and 竹内, 央 and 大西, 隆史 and Sekido, Mamoru and Ichikawa, Ryuichi and Yoshikawa, Makoto and Mochizuki, Nanako and Murata, Yasuhiro and Kato, Takaji and Ichikawa, Tsutomu and Takeuchi, Hiroshi and Onishi, Takafumi},
 book = {第16回アストロダイナミクスシンポジウム講演後刷り集　2006, Proceedings of 16th Workshop on JAXA Astrodynamics and Flight Mechanics},
 month = {Mar},
 note = {2005年11月、ハヤブサ(MUSES-C: Asteroid Sample-return Spacecraft)が小惑星イトカワにタッチダウンを行なった時期に合わせて、国内のVLBI(Very Long Baseline Interferometry)観測局6局を使ってハヤブサの相対VLBI観測を行なった。これは飛翔体のVLBI観測における、相対VLBIによる遅延補正の精度/確度を検証する絶好の機会となった。この観測では、群遅延量より精度の高い位相遅延量を観測量として使い、原子時計の同期誤差と大気に起因する遅延量を数百ピコ秒の精度で補正できることが確認された。本文では相対VLBIによる遅延補正のアルゴリズムについても述べる。, In November 2005, spacecraft Hayabusa (MUSES-C: Asteroid Sample-return Spacecraft) has made touchdown approaches to the asteroid ITOKAWA. In this occasion, we organized Delta-VLBI (Very Long Baseline Interferometry) observation of Hayabusa with six Japanese domestic VLBI stations. We used phase delay, which has higher resolution that group delay, as observable for this experiments. This was a good chance to evaluate the accuracy of Delta VLBI delay measurement for spacecraft. Excess delay was modeled by clock and atmospheric delay and the correction accuracy was found to be around several hundreds of pico seconds., 資料番号: AA0063481014},
 pages = {78--83},
 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/ISAS)},
 title = {Delta VLBI test observation at Hayabusa's approach to Itokawa},
 year = {2007}
}