摘要
针对空间态势感知和地面观测预警任务,成像载荷对空间或地面目标的可见性分析是空间监视系统设计的关键问题之一。面向配置有成像载荷的卫星,文章提出了一种通用化的可见性分析方法。通过成像模式规范化统一可见性分析输入和过程,使可见性分析方法适用于多种观测场景;进一步采用几何可见性预判、无约束理想姿态计算、有约束接近姿态计算、成像载荷视场下目标落位判断等分析过程,实现多段观测姿态约束、成像载荷斜装、视场约束等条件下的可见性分析;结合预报步长自适应方法,可获得快速稳定的可见性窗口预报结果。与STK软件仿真进行比较,结果表明:文章提出的方法能够正确获得可见性预报结果,具有一定的计算精度,并可支持在姿态约束、成像载荷斜装、视场范围等约束下的可见性分析。
In the need of space situation awareness and earth observation warning,target visibility analysis for slant-mounted imaging payload is the key problem in space surveillance system design.A general target visibility analysis method is proposed to enable various surveillance or observation mission by introducing normalization of imaging mode.The main procedure includes geometry visibility anticipation,ideal attitude computation without constraints,approaching attitude computation with constraints,field sector determination and adaptive prediction step modulation,which realizes effective visibility prediction under attitude maneuvering restraint,imaging payload assemble and constraint field of view.The simulation results of the proposed method are illustrated and compared with results from STK software simulation in the same configuration.Final results show both effectiveness and good accuracy of the given method.
作者
张淳
刘鹤
赵阳
韩小军
ZHANG Chun;LIU He;ZHAO Yang;HAN Xiaojun(Beijing Institute of Spacecraft System Engineering,Beijing 100094,China)
出处
《航天器工程》
CSCD
北大核心
2021年第2期23-30,共8页
Spacecraft Engineering
关键词
空间监测
目标观测
可见性分析
卫星姿态约束
成像载荷斜装
space surveillance
target observation
visibility analysis
satellite attitude constraint
slant-mounted imaging payload
