Research on signal detection of Re-entrant fiber optic gyroscope

被引:0
|
作者
Mao, XH [1 ]
Tian, Q [1 ]
Sun, LQ [1 ]
Zhang, YS [1 ]
Wu, XM [1 ]
Liu, JJ [1 ]
机构
[1] Tsing Hua Univ, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China
关键词
fiber optic gyroscope (FOG); re-entrant fiber optic gyroscope (Re-FOG); signal detecion; modulation; demodulation;
D O I
10.1117/12.573536
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Re-entrant fiber optic gyroscope (Re-FOG), using a shorter Sangnac sensitive ring (SSR), makes the two counter-propagandizing lights re-enter the ring before they interference with each other when they reach the photo-detector. By this means, the Re-FOG gets the same detecting accuracy as the conventional interferometric fiber optic gyroscope (IFOG) that has several times length of the sensitive ring. In this paper, the principle of the Re-FOG is first reviewed. Then the output signal is analyzed. Finally a method of signal detection is presented.
引用
收藏
页码:343 / 347
页数:5
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