Computer-controlled, fully automatic north sensors using all-fiber gyros are developed. With the use of a fiber gyro with a scale factor of 5.4 s and a 1665-m polarization-maintaining fiber, the north direction is detected with a high measurement accuracy of 0.056°. The effect of the surrounding mechanical noises on the achievable measurement accuracy is investigated.
© 1994 Optical Society of America
Tomohiro Tanaka, Yuichi Igarashi, Makoto Nara, and Toshihiko Yoshino, "Automatic north sensor using a fiber-optic gyroscope," Appl. Opt. 33, 120-123 (1994)