速率偏频激光陀螺寻北仪中转台测角周期性误差的影响分析  

Study on North-finding Deviation Caused by the Turntable's Periodic Angular Position Error in a Rate Biased RLG North-finder

作　　者：张岩[1] 吴文启[1] 江明明[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,湖南长沙410073

出　　处：《国防科技大学学报》2011年第1期105-108,共4页Journal of National University of Defense Technology

基　　金：国家部委资助项目

摘　　要：连续旋转式寻北仪以其突出的性能成为当前寻北仪研究的热点,但关于转台误差对连续旋转寻北算法精度影响的分析很少。针对速率偏频激光陀螺寻北仪,研究了转台测角周期性误差对寻北结果的影响。理论分析表明,测角周期性误差的存在会导致寻北结果偏离真实值,必须对其进行建模和补偿以提高寻北精度。对理论分析结果进行了仿真实验和样机寻北实验验证。Currently,the continuous rotary north-finder is widely discussed for its outstanding performance.However,few researches about the influence of turntable error on the continuous rotary north-finding algorithm can be found.For the north-finder based on rate biased RLG（ring laser gyro）,the influence of turntable＇s periodic angular position errors to the north-finding results was studied.Theoretical analysis shows that,the existence of periodic angular position errors may cause unexpected error in the north-finding process and these errors must be modeled and compensated for in order to increase the north-finding precision.Finally,simulation and experiments were carried out to verify the theoretical conclusion.

关 键 词：速率偏频激光陀螺 寻北仪 转台测角周期性误差 

分 类 号：U666.1[交通运输工程—船舶及航道工程]