Chinese Optics Letters, Vol. 5, Issue 3, 138 (2007)
Feature analysis of the scale factor variation on a constant rate biased ring laser gyro
[in Chinese], [in Chinese], and [in Chinese]
- College of Optoelectric Science and Technology, National University of Defense Technology, Changsha 410073
Scale factor of a constant rate biased ring laser gyro (RLG) is studied both theoretically and experimentally. By analyzing experimental data, we find that there are three main terms contributing to the scale factor deviation. One of them is independent of time, the second varies linearly with time and the third varies exponentially with time. Theoretical analyses show that the first term is caused by experimental setup, the second and the third are caused by un-uniform thermal expension and cavity loss variation of the RLG.