@techreport{oai:jaxa.repo.nii.ac.jp:00044596,
 author = {大月, 正男 and 新宮, 博公 and 鈴木, 孝雄 and 円居, 繁治 and 田畑, 浄治 and OTSUKI, Masao and SHINGU, Hirokimi and SUZUKI, Takao and ENKYO, Shigeharu and TABATA, Joji},
 month = {Nov},
 note = {This paper describes the historical procedure and the result of study on the development of the gyro with higher performance and precision, which is called WAMIG(wide angle miniature integrating gyro). NAL began development of the gyro for strapdown inertial guidance in 1964. In the first stage of development, the MIG(miniature integrating gyro), which was a prototype gyro, was studied in order to clarify difficulties in developing the WAMIG. Secondly, an orifice damper was developed for obtaining the wider angle and a balance pan was applied to the slight adjustment of the unbalanced mass. Finally, the development of the WAMIG was made possible through the design of a permanent-magnet and moving-coil type torque generator. The recently developed gyros have the following performance features: service life of more than 1000 hr., random drift 0.02 deg/hr., elastic restraint coefficient 0.05 deg/hr/mRad, anisoelastic coefficient 0.1 deg/hr/g2 and day to day stabilities 0.2 deg/hr(acceleration-insensitive drift), and 0.2 deg/hr/g(acceleration-sensitive drift)., 資料番号: NALTR0349000, レポート番号: NAL TR-349},
 title = {ストラップダウン方式用広角度積分ジャイロの研究},
 year = {1975}
}