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谐振型光纤陀螺方波频率调制方法
引用本文:姚琼,胡永明,谢元平,宋章启.谐振型光纤陀螺方波频率调制方法[J].光学技术,2005,31(4):503-505.
作者姓名:姚琼  胡永明  谢元平  宋章启
作者单位:国防科技大学,光电科学与工程学院,湖南,长沙,410073
摘    要:分析了谐振型光纤陀螺(R FOG)方波频率调制方法的工作原理和调制性能,得到了采用方波频率调制时R_FOG的极限灵敏度,并对方波频率调制和正弦频率调制两类调制方法的特性进行了比较。结果表明,方波调制方法的极限灵敏度优于正弦频率调制方法的极限灵敏度,其输出信号为方波强度调制信号,易于与I_FOG中类似的数字解调方法相结合,是实现全数字处理R_FOG的较理想的调制方案。

关 键 词:谐振型光纤陀螺  方波频率调制  极限灵敏度
文章编号:1002-1582(2005)04-0503-03
修稿时间:2004年6月28日

Study on square-wave frequency modulation of resonator fiber optic gyroscope
YAO Qiong,HU Yong-ming,XIE Yuan-ping,SONG Zhang-qi.Study on square-wave frequency modulation of resonator fiber optic gyroscope[J].Optical Technique,2005,31(4):503-505.
Authors:YAO Qiong  HU Yong-ming  XIE Yuan-ping  SONG Zhang-qi
Abstract:The operation principle and modulation performance of square_wave frequency modulation on resonator fiber optic gyroscope (R_FOG) were analyzed, the limited sensitivity of R_FOG that used square_wave frequency modulation was obtained. It is found that limited sensitivity of R_FOG that uses square_wave frequency modulation is better than that uses sine_wave frequency modulation. Furthermore, the output signal of square_wave frequency modulation is square_wave amplitude modulated signal, and this kind of signal form can be easily processed with digital demodulation method applied in I_FOG. Therefore, square_wave frequency modulation will be more appropriate modulation method for all_digital R_FOG.
Keywords:resonator fiber optic gyroscope(R_FOG)  square_wave frequency modulation  limited sensitivity  
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