数字调制信号的复位误差对谐振式光纤陀螺影响的分析  

Analysis on the Effects of Imperfect Digital Modulation Signal Reset Amplitude to Resonator Fiber Optic Gyroscopes

作　　者：李如春[1] 王晓东[1] 李剑清[1] 

机构地区：[1]浙江工业大学信息学院,杭州310014

出　　处：《传感技术学报》2007年第1期88-91,共4页Chinese Journal of Sensors and Actuators

摘　　要：谐振式光纤陀螺是采用环形谐振腔来增强Sagnac效应的,其数字调制信号的复位高度V2π的不精确,会对陀螺旋转角速度的测量产生影响.文章从理论上分析了不精确的复位高度V2π将使谐振腔中的交叉耦合电场和直通耦合电场之间不会形成最佳相消干涉,从而产生误差,并利用探测器输出总电场的表达式,以双频率调制的谐振式光纤陀螺为例,对引入的误差作了定量的数值计算.最后,文章介绍了几种克服误差的方法.Resonator fiber optical gyro uses ring resonator to enhance the Sagnac effect, its imperfect serrodyne＇s reset amplitude will produce effects to the rotation sensing of optic gyroscopes. The paper gives theoretical analysis, if the amplitude is not exactly V2π, then two electric fields.Ecross and Ebar can＇t results in optimum destructive interference, thus the resulting waveform has errors. For resonator fiber optical gyro using two frequencies modulation, based on the sum of fields expression in detector, gives numerical calculation of rotation sensing errors associated with imperfect serrodyne amplitude. At last, some solutions for substaintial errors are presented.

关 键 词：谐振式光纤陀螺 数字调制信号的复位高度 误差分析 

分 类 号：TN253[电子电信—物理电子学]