自旋卫星几何定姿限制条件及误差分析  

Error Analysis of Geometry Attitude Determination of Spin-stabilized Satellites

作　　者：淡鹏[1,2] 陈剑平[1,2] 

机构地区：[1]宇航动力学国家重点实验室软件室,陕西西安710043 [2]西安卫星测控中心,陕西西安710043

出　　处：《电子科技》2016年第5期62-66,共5页Electronic Science and Technology

摘　　要：几何方法是自旋稳定卫星姿态确定的基本方法,但在实际工程应用中常出现计算精度较低的问题。针对此问题,文中系统分析了利用不同观测量进行自旋稳定卫星姿态确定的几何计算方法,推导了各类计算公式的限制因素、误差敏感特性、使用条件等;并以某颗风云气象卫星测控过程中的实际观测数据为例,给出了其几何定姿偏差较大的几段数据的原因分析;探讨了提高几何定姿精度的途径。研究结果对自旋稳定卫星定姿精度的分析与提高,事后定姿计算精度方面均有一定的参考意义。The geometry attitude calculation is the basic method of spin-stabilized satellites,but suffers poor calculation accuracy in attitude determination in the actual engineering task. A geometry attitude calculation method using different type of measurement is given systematically. The limiting factor,the error sensitive characteristics,and service conditions are analyzed. Then some true metrical data of an FY meteorological satellite are used to analyze the error reason. And methods for improving the accuracy are proposed. The analysis result offers references in the analysis of spin-stabilized satellites＇ attitude determination and the improvement of the accuracy of afterwards attitude determination.

关 键 词：自旋稳定 几何定姿 误差分析 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计]