大气环境监测卫星地方时控制策略优化  

Optimization for Local Time of Ascending Node Control Strategy on DQ-1

作　　者：石新宇[1] 温渊[1] 马晶晶[1] 张娟[1] 袁金如[1] 赵力文 鹿光 杜甜 SHI Xinyu;WEN Yuan;MA Jingjing;ZHANG Juan;YUAN Jinru;ZHAO Liwen;LU Guang;DU Tian(Shanghai Institute of Satellite Engineering,Shanghai 201109,China;China Xi’an Satellite Control Center,Xi’an 710043,Shaanxi,China)

机构地区：[1]上海卫星工程研究所,上海201109 [2]西安卫星测控中心,西安710043

出　　处：《上海航天（中英文）》2023年第3期117-121,158,共6页Aerospace Shanghai（Chinese&English）

摘　　要：针对大气环境监测卫星地方时的控制和优化问题,从太阳同步轨道卫星的地方时漂移规律入手,建立了地方时漂移估计模型,给出了通过改变倾角来调节地方时漂移的控制策略。在此基础上,采用遗传算法对控制策略进行了优化,讨论了相关算子的选择,最终得到了燃料有限情况下的最优控制曲线。优化结果表明:不限燃料情况下,大气环境监测卫星可通过寿命内一次倾角控制实现小于6.6 min的地方时偏差。此外,为了保证地方时偏差小于15 min的指标要求,卫星至少需要进行一次0.07°的倾角控制。In order to address the control and optimization issues of the local time of ascending node(LTAN)for the atmospheric environment monitoring satellite(known as DQ-1),a drift estimation model for the LTAN is established based on the drift characteristics of the LTAN for sun-synchronous satellites.On this basis,a control strategy is proposed to adjust the LTAN drift by changing the inclination angle.Furthermore,a genetic algorithm is used to optimize the control strategy,including the selection of algorithm operators,by which the optimal control trajectory under fuel-limited conditions is obtained.The optimization results indicate that,without considering fuel limitations,the DQ-1 can achieve an LTAN deviation of no more than 6.6 minutes through one single inclination control within its operational lifespan.Additionally,in order to ensure that the LTAN deviation is less than 15 minutes,the satellite needs to perform at least one inclination control of 0.07º.

关 键 词：太阳同步轨道(SSO) 地方时控制 倾角修正 控制策略 遗传算法 

分 类 号：V525[航空宇航科学与技术—人机与环境工程] V529.1