光纤陀螺捷联惯导划桨运动补偿  

Research on Sculling Compensation Algorithm of FOG SINS

作　　者：律新伟[1] 薛宁[1] 贾龙[1] 李焱焱[1] 

机构地区：[1]北京航天自动控制研究所,北京100854

出　　处：《航天控制》2015年第5期54-57,共4页Aerospace Control

摘　　要：光纤陀螺输出为角速率信号,基于角增量和速度增量的传统划桨运动补偿算法直接应用于光纤陀螺捷联惯导系统时,算法误差明显增大,影响了惯导精度。为了抑制算法误差,提出了以角速率为输入信号的划桨补偿算法,并以算法漂移误差最小为优化准则对算法进行优化,推导了相应的划桨补偿系数方程和算法误差表达式。仿真结果表明,所设计的算法比同子样数常规角增量划桨补偿算法在补偿精度上有明显提高。Due to the direct angular velocity signal which is outputed by fiber optic gyroscope（ FOG）,the algorithm error increases dramatically,when the traditional sculling compensation algorithm is applied to the strapdown inertial navigation system（ SINS）. A new compensation algorithm by taking angular rate signal as input is proposed to suppress sculling error. The algorithm is optimized by minimizing algorithm drift error,and the sculling compensation coefficient equations and algorithm error expressions are deduced respectively. The simulation result shows that the new angular rate sculling compensation algorithm is greatly improved by precision than regular algorithm with the same number of gyro angular increment samples.

关 键 词：光纤陀螺 捷联惯导 划桨误差 误差补偿 旋转矢量 

分 类 号：U666.1[交通运输工程—船舶及航道工程]