@techreport{oai:jaxa.repo.nii.ac.jp:00006307,
 author = {里, 誠 and 川井, 洋志 and Sato, Makoto and Kawai, Hiroshi},
 month = {Jan},
 note = {Japan Aerospace Exploration Agency (JAXA), formerly named as National Space Development Agency (NASDA), developed Tuned Dry Gyroscope (TDG), as supreme precision rate sensor for satellite attitude control. JAXA also developed Inertial Reference Unit (IRU) using TDG. This IRU is used on almost every JAXA satellite. It has passed about fifteen years since the development. It is difficult to purchase some kind of electronics parts nowadays. Meanwhile, satellite system requires higher accuracy, more operation flexibility and so on. So, we decided to redesign IRU. Aiming is high-reliability and high-accuracy. The study has started in FY 2001. In FY 2003 IRU redesign was completed and we prepared every document needed. In FY 2004, we built an Engineering Model and qualify its function and performance. In FY 2005, we will complete this study., 資料番号: AA0049054051, レポート番号: JAXA-SP-05-008},
 title = {IRUの高信頼性化の研究:プロジェクトの支援},
 year = {2006}
}