船用捷联惯导姿态解算的浑沌结果初探  

A Preliminary Study on Chaos of the Attitude Algorithm for Ship Strapdown Inertial Navigation System

作　　者：田蔚风[1] 金志华[1] 陆恺[1] 

机构地区：[1]上海交通大学信息检测技术与仪器系,上海200030

出　　处：《中国惯性技术学报》1999年第4期39-42,共4页Journal of Chinese Inertial Technology

基　　金：国防科技预研基金项目!(96J9 .2 .2)

摘　　要：本文基于姿态矩阵四元数算法，应用Ｐｏｉｎｃａｒｅ 截面分析研究船用捷联惯导系统姿态的估计过程。结果表明，当载体受周期激励尤其是三个方向的周期激励时，载体的姿态估计可能呈现浑沌结果。由于浑沌运动对初值非常敏感，因此姿态估计的浑沌结果将导致基于递推的捷联导航系统精度下降。所以。Based on the algorithm of attitude matrix,this paper studies the attitude estimate of ship strapdown inertial navigation system (SINS) by using the method of Ponicare crosssection analysis.It is shown that the attitude estimate may be chaotic if the system is driven by period signals,especially in three directions.Because it is sensitive to preliminary conditions,the chaos of estimate may lower the accuracy of SINS.Therefore we should pay attendtion to this kind of chaos.

关 键 词：捷联惯性导航系统 姿态算法 浑沌 

分 类 号：U666.12[交通运输工程—船舶及航道工程]