摘要
针对基于矢量定姿的惯性系对准方法的对准精度问题,以对准解算模型及定姿误差模型为基础,详细推导了QUEST姿态确定算法在对准应用中的误差均方差并证明了其与传统TRAID算法精度的统一关系。蒙特卡洛仿真实验对比分析了重力矢量与重力积分矢量两种观测模式下,4种定姿方案的惯性系对准精度。理论推导与仿真实验均表明,等精度观测条件下采用QUEST算法后,对准统计精度明显优于传统的TRAID算法,其中方位误差均方差约为传统算法的1/6,为QUEST算法引入晃动基座精对准提供了理论与实验依据。
The paper analyze and deduced the error of QUEST algorithm and the uniform relationship with traditional TRAID method for SINS alignment in inertial frame in detail.Monte-Carlo simulations analyzed the precision of observation scheme with gravity vectors and gravity integration vectors and the precision of different AD algorithms comparatively.Theory analysis and simulation test show that the QUEST algorithm can achieve the higher precision compared with TRAID under equivalent precision observation condition,and the variance of calculation drops to one sixth of the origin,which can give the theory foundation of algorithm application on rocking base alignment.
出处
《电子测量技术》
2017年第7期67-70,89,共5页
Electronic Measurement Technology
基金
科技部国防合作项目(2010DFR80140)
国家科技支撑计划课题(2012BAH36B03)资助项目
