干涉型闭环光纤陀螺实现中关键问题研究

Research of the key technologies on closed-loop IFOG

介绍了干涉型光纤陀螺实现中的几个关键问题和相应的解决方法.把光纤陀螺的系统构成细分为前端和后端,关键问题有:1)梳状信号的滤波;2)模拟开关的选取;3)信号采样;4)阶梯波的处理;5)干涉闭环光纤陀螺的软件设计.相应问题细化到运放、模数转换、数模转换等器件的选择,并针对双路调制信号对光纤陀螺的影响和应对措施作了工程性的分析.本文是基于长期的工程实践和深入的理论分析而得到的,具有较强的实践参考意义.运用文章中的方法和经验,实践证明光纤陀螺仪的精度和灵敏度有较大提高.

The key problems and solutions of the IFOG＇s realization have been involved in this paper. Here the IFOG system is divided into the fornt part and the back one. The key technologies presented in this paper are 1 ） filter of comb signal, 2） selection of analog switch, 3）sampling of signals, 4）process of step wave and 5）software design for IFOG. Details for the selection of electronic components, such as AMP,A/D, D/A, are also presentd. The double modulated signals＇ effect on IFOG and countermeasure-ments in the engineering situation are discussed. The results in this paper comes from long-time engineering work and theoretical analysis, so they can be used as a good reference tool . The precision and the sensitivity of IFOG can be greatly improved by use of the presented methods.