临近空间星敏感器观星能力研究  

Study on Detectability of Near Space Star Sensor

作　　者：李晓[1] 徐卿[1] 孙秀清 李林 LI Xiao;XU Qing;SUN Xiuqing;LI Lin(Beijing Institute of Control Engineering,Beijing 100094,China)

机构地区：[1]北京控制工程研究所,北京100094

出　　处：《空间控制技术与应用》2024年第3期94-102,共9页Aerospace Control and Application

基　　金：国家自然科学基金资助项目(52275083)。

摘　　要：临近空间飞行器对星敏感器需求日益增加,与空间应用环境相比,临近空间包含大气消光、天空背景光、高速、高温和高动态等影响星敏感器观星能力的新环境.对影响临近空间星敏感器观星能力的因素进行逐级分解,得出视场、灵敏度、星点信噪比和图像处理算法等因素对观星能力的影响机理,并针对信噪比与环境因素和设计因素的关系进行量化分析,在此基础上提出临近空间星敏感器整机参数设计方法.针对特定需求开展原理样机的设计与试验验证,试验数据验证了原理样机能够满足应用需求.Demand for star sensor is increasing on near space vehicles.Compared with space environment,near space environment has new factors which influence star sensor’s detectability such as atmospheric extinction,sky backgroud light,high speed,high temperature,high angular velocity,etc.The factors which influence near space star sensor’s detectability are analyzed step-by-step.The influencing mechanism of detectability is obtained about FOV,sensitivity,SNR,image processing algorithm.The relation between SNR and environment/design factors is quantified.One method of parameter design for near space sensor is proposed.Finally one principle prototype for special requirement is designed,tested and verified.The results indicate the principle prototype can meet the ap-plication requirements.

关 键 词：临近空间 星敏感器 观星能力 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计]