Online ef fective backscattering estimation for ring laser gyro  

作　　者：樊振方 罗晖 卢广锋 胡绍民 

机构地区：[1]College of Optoelectronic Science and Engineering,National University of Defense Technology

出　　处：《Chinese Optics Letters》2012年第5期36-38,共3页中国光学快报（英文版）

基　　金：supported by the Program for New Century Excellent Talents in University 2010

摘　　要：Lock-in phenomenon in ring laser gyroscopes is directly related to effective backscattering, which includes both backscattering and nonuniform loss. Effective backscattering often differs in different states and can only be reflected in a working state via online estimation in the working state. Moreover, effective backscattering can result in the intensity modulation of beams in the opposite directions. The effective backscattering parameters can be obtained by measuring the weak modulations in the intensity signals under different rotation rates and by using the curve-fitting method. This letter demonstrates the online estimation of backscattering.Lock-in phenomenon in ring laser gyroscopes is directly related to effective backscattering, which includes both backscattering and nonuniform loss. Effective backscattering often differs in different states and can only be reflected in a working state via online estimation in the working state. Moreover, effective backscattering can result in the intensity modulation of beams in the opposite directions. The effective backscattering parameters can be obtained by measuring the weak modulations in the intensity signals under different rotation rates and by using the curve-fitting method. This letter demonstrates the online estimation of backscattering.

关 键 词：GYROSCOPES Ring lasers 

分 类 号：TN249[电子电信—物理电子学] TN966