一种新的SINS/星敏感器组合导航姿态匹配算法  

A New and Effective Algorithm of Attitude Matching for SINS/Star Sensor Integrated Navigation System

作　　者：龙瑞[1,2] 秦永元[1] 夏家和[1] 

机构地区：[1]西北工业大学自动化学院 [2]中国人民解放军96630部队

出　　处：《西北工业大学学报》2011年第3期476-480,共5页Journal of Northwestern Polytechnical University

摘　　要：对SINS/星敏感器组合导航算法进行了研究。基于量测失准角的概念,提出了一种新的SINS/星敏感器组合导航姿态匹配算法,分析了SINS和星敏感器的输出,详细推导了组合导航系统量测的构造过程。与传统姿态匹配方法相比,该算法计算量小且噪声信号的物理意义更加明确。通过仿真验证,结果表明该算法是有效的,既能使姿态误差得到显著收敛,又能准确估计陀螺常值漂移和星敏感器安装误差。Aim. The introduction of the full paper reviews some papers in the open literature and then proposes our new and relatively effective algorithm of attitude matching, which is explained in sections 1 and 2. The core of section 2 consists of： （ 1 ） we introduce the measured misalignment angle to the SINS/star sensor integrated navigation system, thus obtaining eq. （7） ; （2） after analyzing its outputs, we construct the measured vector with the attitude matching method in Refs. 6 and 7 ; （3） with the state equation of the SINS/star sensor integrated navigation system and its measurement equation, we use the Kalman filter to estimate its states. Section 3 simulates our attitude matching algorithm; the simulation .results, presented in Figs. 2, 3 and 4, and their analysis show preliminarily that our new algorithm not only can effectively constrain the attitude error of the SINS/star sensor integrated navigation system but also estimate the constant drift of its gyro and the installation error of the star sensor.

关 键 词：SINS 星敏感器 组合导航 姿态匹配 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计]