一种星敏感器星光折射角故障检测算法  

Fault Detection Algorithm for Starlight Refraction Angle Using Star Sensor

作　　者：魏红波[1,2] WEI Hongbo

机构地区：[1]中国电子科技集团公司第二十研究所,西安710068 [2]陕西省组合与智能导航重点实验室,西安710068

出　　处：《现代导航》2024年第3期163-168,共6页Modern Navigation

摘　　要：针对空天飞行器星光折射导航系统中大视场星敏感器的天文观测信息易受外界环境、光电信号等影响而导致星光折射导航性能下降的问题,提出了一种星敏感器星光折射角故障检测算法。建立了基于惯性导航辅助的星光折射角误差模型,结合星敏感器测量噪声特性设计了值域合理性检测、趋势合理性检测、跳变检测等算法,并对星光折射角测量信息中野值和跳变等故障进行了检测。通过实际观测数据的试验验证结果表明,该方法有效解决了星光折射导航系统中星光折射角的故障检测问题,为双视场星光折射导航系统的工程化实现奠定了基础。Because of the problem that celestial observation information is affected by the external environment and photoelectric signals easily,which leads to performance degradation of starlight refraction navigation system,fault detection algorithm for starlight refraction angle using star sensor is proposed.The error model of starlight refraction angle based on inertial navigation information is established.Combined with the measurement noise characteristics of the star sensor,the algorithms for range rationality detection,trend rationality detection,and jump detection are designed,and the faults such as field value and jump change in the starlight refractive angle measurement information are detected respectively.The experimental verification of the actual observation data shows that the proposed method effectively solves the problem of fault detection of the starlight refraction angle in starlight refraction navigation system,and lays a foundation for the engineering implementation of the dual-field starlight refraction navigation system.

关 键 词：故障检测 星敏感器 跳变故障 星光折射导航系统 

分 类 号：V249[航空宇航科学与技术—飞行器设计]