激光捷联惯导系统角增量输入姿态算法

在对经典理想角增量输入的圆锥算法分析总结基础上,提出并推导了更为合适的经典角增量输入圆锥算法通式.在对经典理想角增量与实际工程滤波角增量的圆锥响应对比分析基础上,推导了滤波角增量输入圆锥补偿算法的补偿系数和误差主项通式.最后,利用文中讨论的理想角增量输入和滤波角增量输入圆锥补偿算法,结合激光陀螺惯性导航系统的频谱特性进行了大量的仿真验证.仿真结果表明,文中讨论的角增量圆锥算法有效,能显著提高激光陀螺捷联惯性导航系统的姿态精度.

Attitude Algorithm with Incremental Angle of RLG SINS

Lots of sophisticated algorithms have been developed to reduce system drift errors in the presence of coning motion.After the analysis and discussion of classical coning algorithm with ideal incremental angle outputs,an appropriate general expression of coning algorithm with incremental angle outputs is put forward and deduced.With the contrast and analysis of coning response between ideal incremental angle outputs and filtered ones of actual project,compensation factors and dominant terms of coning algorithm with filtered incremental angle outputs are deduced.Then,simulations of these coning algorithms are executed according to the spectrum characteristics of RLG SINS.Besides giving the preferred algorithm of RLG SINS,simulation results indicate that coning algorithms discussed in this paper are effective and improve the precision of RLG SINS.