摘要
通过分析激光陀螺锁区的形成原因,给出了锁区最小化控制的基本原理.由激光陀螺谐振腔相向传播光束的输出特性,说明了常规锁区控制方案存在的缺点.从激光陀螺基本方程推导出锁区误差判别信号,提出了基于拍频信号和腔长信号迭加放大的高信噪比锁区控制方案,对交变偏频和常值偏频激光陀螺均适用.运用该项技术,实现了对某型激光陀螺的全温范围内的锁区最小化控制.
The output characteristic of the traveling waves in the cavity is analyzed and it is found that the conventional lock-in control techniques have some disadvantages.The lock-in error discriminant signal is deduced from the equations for laser gyro.The high signal-to-noise ratio controlling means are implemented by the operation of beat frequency signal and cavity length signal.It is concluded that the approach is applicable to both constant biased and alternating biased laser gyro,and the the lock-in zone of laser gyro is precisely controlled in the operating temperature range.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2010年第5期781-784,共4页
Acta Photonica Sinica
基金
航空科学基金(06ZD18011)资助
关键词
激光陀螺
锁区控制
背向散射
高信噪比
Laser gyro
Lock-in control
Backscatter
High signal-to-noise ratio
