遥感卫星多载荷普查观测自主任务方法  

Autonomous Mission Method for Multi Payload Remote Sensing Satellites

作　　者：陆召严 姬聪云 付碧红 斯朝铭 常亮 张帆 LU Zhaoyan;JI Congyun;FU Bihong;SI Chaoming;CHANG Liang;ZHANG Fan(Innovation Academy for Microsatellites,Chinese Academy of Sciences,Shanghai 201304,China)

机构地区：[1]中国科学院微小卫星创新研究院,上海201304

出　　处：《北京理工大学学报》2024年第12期1241-1252,共12页Transactions of Beijing Institute of Technology

基　　金：中国科学院战略性先导科技专项A类(XDA19010000)。

摘　　要：针对遥感卫星业务化工作覆盖区域大、任务频率高、持续时间长、数据更新繁重的特点,提出了一种遥感卫星多载荷自主普查任务方法,实现卫星对重点区域目标的自主观测.该方法首先分析卫星观测任务形成具有优先级标识的多边形任务区域,并梳理卫星观测资源约束和载荷配置形成判断条件以及任务指令序列,然后在星上配置自主普查任务模式,控制目标观测区域选择、约束条件判读以及任务指令序列选取,完成单个自主普查任务周期.同时,依据两个任务周期时间间隔,选取合适的任务指令序列,重复自主普查观测,形成卫星的长周期普查业务自主化运行.地面验证系统设置了5个包含2类不同轨道参数的仿真工况,测试了多种载荷配置下星上自主普查任务模式执行的稳定性和准确性.结果表明,设计的自主普查任务模式可以在卫星运行期间按预期的时序判断观测区域的进出及数传、载荷的开关机,准确选择正确的任务指令序列,星下点坐标、太阳高度角的计算经度误差保持在0.5%以内.In view of remote sensing satellite’s characteristics of covering a large area,high mission frequency,long duration and heavy data updates burden,a satellite multi-payloads autonomous census mission method was proposed.First,the satellite observation mission area was analyzed to identify the priority area and determine the conditional statements and mission sequence according to satellite on-board resource constraints based on payload selection.Then,an autonomous census mission mode was deployed on the satellite to control target observation area selection,judgment of conditional statements and mission sequence selection.At the same time,based on the time interval between two mission cycles,an appropriate mission instruction sequence was selected and autonomous census observations were repeated to form an autonomous operation of the satellite’s long-cycle census work.The ground verification system set up 5 simulation conditions including 2 different types of orbital parameters to test the stability and accuracy of the autonomous census mission mode execution on the satellite under various load configurations.The results show that the designed autonomous census mission mode can accurately judge the entry and exit of the observation area according to the expected timing during satellite operation,and the calculation error of the sub satellite point and the sun angle is below 0.5%.

关 键 词：星上自主普查 多载荷管理 指令序列 观测优先级 太阳高度角 

分 类 号：V474.2[航空宇航科学与技术—飞行器设计]