惯性导航算法的载体高动态特性研究  

Research on the Characteristics of High-dynamic Mode Based on Inertial Navigation System Algorithm

作　　者：龚琳琳[1] 张全[1] 牛小骥[1] 

机构地区：[1]武汉大学卫星导航定位技术研究中心,武汉430079

出　　处：《导航定位学报》2015年第2期71-75,共5页Journal of Navigation and Positioning

基　　金：国家自然科学基金项目(41174028;41231174);武汉大学本科生质量工程专业综合改革试点项目(275534);中央高校基本科研业务费专项资金--武汉大学自主科研项目(2042014kf0258)

摘　　要：针对惯性导航算法中载体高动态特性的界定尚不明确的问题,提出了惯性导航算法中载体的高动态特性,即剧烈的复合运动形式可称之为惯性导航的高动态场景,而单纯的高速、大加速度或大角速度运动对于惯性导航来说并不是真正意义的高动态。文中阐述了载体的动态条件对惯性导航系统性能的影响,然后从惯性导航算法的角度得出载体高动态特性的界定,最后设计了仿真实验对结果进行验证。结果表明,剧烈的复合运动下惯性导航会产生明显的动态效应误差,此时惯性导航算法的高阶修正项影响显著,从而证明了惯性导航的高动态场景的特征。Currently the definition of high-dynamic is not clear in the research of Inertial Navigation System （INS） algo- rithm. In the paper, the characteristics of the high-dynamics for INS were analyzed. The conclusion is that high dynamic for INS refers to the scenarios with significant composite motion variations, and it is not high dynamic if there is only simple mo- tion no matter how large is the magnitude and how quick it changes. Firstly, the effect of composite motions on the INS accura- cy was analyzed. Then the characteristics of the high-dynamic for INS were defined. Finally, the simulation experiment was been conducted to verify the proposed definition. The results indicated that the significant dynamic corrections were the results of the significant composite motion variations, which verified the proposed characteristics of the high-dynamics.

关 键 词：高动态 惯性导航系统(INS) 动态效应 高阶修正 

分 类 号：U666.12[交通运输工程—船舶及航道工程]