摘要
面向具备波束指向捷变能力的小型化敏捷合成孔径雷达(SAR)卫星成像需求,提出了通过平台姿态敏捷机动和载荷波束捷变扫描一体化控制实现条带成像、多条带拼接成像、滑动聚束成像等传统成像模式的方法。针对配合成像过程提出的大角度机动和高精度高稳定度连续指向跟踪控制要求,采用5个单框架控制力矩陀螺(SGCMG)组成的“五面锥”构形控制力矩陀螺群作为执行机构,设计了基于姿态四元数和角速度反馈的改进型递阶饱和控制器,实现了平台的敏捷机动和对目标的稳定跟踪指向。数学仿真结果表明:该控制系统有效可行。
In order to meet the needs of miniaturized agile synthetic aperture radar(SAR)satellite imaging with the capacity of beam pointing,an agile maneuver platform with load beam scanning is adopted.The traditional imaging modes,such as strip imaging mode,multi-strip splicing imaging mode,and sliding bunching imaging mode can be realized in the platform.Aiming at the requirements of large angle maneuver,high pointing accuracy,and high stability in the process of matching imaging,the pentagonal pyramid configuration single gimbal control moment gyroscopes(SGCMG)is used as the actuator,and the improved hierarchical saturation controller based on attitude quaternion and angular velocity feedback is employed.The control system meets the requirements of agile movement and stable tracking and pointing of the target.Simulation results demonstrate that the control system is effective and feasible in collaborative imaging of platform and SAR payload.
作者
张永强
王赟
刘德庆
陈筠力
于迎军
吴敬玉
ZHANG Yongqiang;WANG Yun;LIU Deqing;CHEN Junli;YU Yingjun;WU Jingyu(Beijing Institute of Tracking and Telecommunications Technology,Beijing 100094,China;Shanghai Institute of Satellite Engineering,Shanghai 201109,China;Shanghai Institute of Spaceflight Control Technology,Shanghai 201109,China;Shanghai Academy of Spaceflight Technology,Shanghai 201109,China)
出处
《上海航天（中英文）》
CSCD
2021年第5期67-73,97,共8页
Aerospace Shanghai（Chinese&English）
基金
上海市引进技术吸收与创新计划项目(12XI-05)。
关键词
敏捷SAR卫星
滑动聚束
基准姿态确定
姿态指向控制
控制力矩陀螺
agile synthetic aperture radar(SAR)satellite
sliding bunching
reference attitude determination
attitude pointing control
control moment gyroscope
