敏捷卫星一般轨迹主动推扫成像模式设计
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摘要
相比于传统对地观测卫星,敏捷卫星可沿滚动、俯仰、偏航三轴进行快速机动,理论上可以实现对地面任意走向条带目标的成像。针对该成像需求,文章设计了敏捷卫星一般轨迹主动推扫成像模式。在一般轨迹主动推扫过程中,卫星三轴姿态均连续变化,文章给出了适用于主动推扫成像过程的姿态规划算法。对于一轨内多个条带目标的成像时序规划问题,建立成像开始时刻规划模型,采用序列二次规划算法对该模型进行求解。针对典型应用场景的仿真算例表明,成像过程规划算法是合理的。从成像质量保障的角度出发,分析了主动推扫成像过程的卫星姿态控制精度、姿态稳定度等影响因素的影响链路,并提出了工程控制要求,可为卫星工作模式设计提供参考。
Compared to the traditional earth observing satellites,theoretically,agile satellites can maneuver rapidly along three axes and accomplish imaging mission of strip targets in any direction.As for this application,an active scanning imaging mode is proposed on general track.In the process of active scanning,three angles of satellite attitude are changing continuously.The attitude planning algorithm is built which can be applied to active scanning process.For the time sequence planning of one-orbit imaging mission of strip targets,the start imaging time model is built.The SQP(sequential quadratic programming)algorithm is used to solve these equations.Simulation result on a typical scenario validates the planning algorithm of imaging processes.For the imaging quality maintenance,the influence of satellite's attitude accuracy and stability during active scanning process is analyzed.The engineering controlling requirement is proposed which can be used in the working mode design of satellite.
Compared to the traditional earth observing satellites,theoretically,agile satellites can maneuver rapidly along three axes and accomplish imaging mission of strip targets in any direction.As for this application,an active scanning imaging mode is proposed on general track.In the process of active scanning,three angles of satellite attitude are changing continuously.The attitude planning algorithm is built which can be applied to active scanning process.For the time sequence planning of one-orbit imaging mission of strip targets,the start imaging time model is built.The SQP(sequential quadratic programming)algorithm is used to solve these equations.Simulation result on a typical scenario validates the planning algorithm of imaging processes.For the imaging quality maintenance,the influence of satellite's attitude accuracy and stability during active scanning process is analyzed.The engineering controlling requirement is proposed which can be used in the working mode design of satellite.
引文
[1]张新伟,戴君,刘付强.敏捷遥感卫星工作模式研究[J].航天器工程,2011,20(4):32-38Zhang Xinwei,Dai Jun,Liu Fuqiang.Research on working mode of remote sensing satellite with agile attitude control[J].Spacecraft Engineering,2011,20(4):32-38(in Chinese)
[2]王志刚,袁建平,陈士橹,等.高分辨率卫星遥感图像的偏流角及其补偿研究[J].宇航学报,2002,23(5):39-42Wang Zhigang,Yuan Jianping,Chen Shilu,et al.Study on satellite remote sensing high resolution image biasangle and its compensation[J].Journal of Astronautics,2002,23(5):39-42(in Chinese)
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[5]袁孝康.星载TDI-CCD推扫相机的偏流角计算与补偿[J].上海航天,2007,23(6):10-13Yuan Xiaokang.Calculation and compensation for the deviant angle of satellite borne TDI-CCD push scan camera[J].Aerospace Shanghai,2007,23(6):10-13(in Chinese)
[6]陈绍龙.侧摆摄影偏航角和速高比的计算模型[J].航天器工程,2010,19(1):36-40Chen Shaolong.Computation model of veer angle and velocity-height ratio for space camera in roll attitude[J].Spacecraft Engineering,2010,19(1):36-40(in Chinese)
[7]王运,颜昌翔.基于差分法的空间相机像移速度矢量计算[J].光学精密工程,2011,19(5):1054-1060Wang Yun,Yan Changxiang.Computation of image motion velocity vector for space camera based on difference method[J].Optics and Precision Engineering,2011,19(5):1054-1060(in Chinese)
[8]景泉.敏捷卫星偏航角计算模型研究[J].航天器工程,2012,21(4):16-20Jing Quan.Research on computation model of bias angle for agile satellite[J].Spacecraft Engineering,2012,21(4):16-20(in Chinese)
[9]黄群东,杨芳,赵键.姿态对地指向不断变化成像时的偏流角分析[J].宇航学报,2012,33(10):1544-1551Huang Qundong,Yang Fang,Zhao Jian.Drift angle analysis for agile satellite imaging when its attitude points to the earth changing continuously[J].Journal of Astronautics,2012,33(10):1544-1551(in Chinese)
[10]Lemaitre M,Verfaillie G,Jouhaud F,et al.How to manage the new generation of agile earth observation satellites[EB/OL].(2000-04-19).[2018-11-05].http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.31.6975&rep=rep1&type=pdf
[11]Verfaillie G,Lema5tre M.Selecting and scheduling observations for agile satellites:some lessons from the constraint reasoning community point of view[C]//Proceedings of Principles and Practice of Constraint Programming-CP 2001.Berlin Heidelberg:Springer,2001:670-684
[12]Habet D,Vasquez M.Saturated and consistent neighborhood for selecting and scheduling photographs of agile earth observing satellite[C]//Proceedings of the5th Metaheuristics International Conference.Kyoto,Japan:MIC,2003:1-6
[13]Dilkina B,Havens B.Agile satellite scheduling via permutation search with constraint propagation[EB/OL].(2005-05-31).[2018-11-05].http://www.cs.sfu.ca/CourseCentral/827/havens/papers/topic%2312(SatelliteScheduling)/SatelliteSched.pdf
[14]Li Y,Xu M,Wang R.Scheduling observations of agile satellites with combined genetic algorithm[C]//Proceedings of the 3rd International Conference on Natural Computation.New York:IEEE,2007:29-33
[15]余婧,于龙江,李少辉,等.敏捷卫星主动推扫成像积分时间设置研究[J].航天器工程,2016,25(5):25-31Yu Jing,Yu Longjiang,Li Shaohui,et al.Study of integral time of TDICCD during active imaging of agile satellite[J].Spacecraft Engineering,2016,25(5):25-31(in Chinese)
[2]王志刚,袁建平,陈士橹,等.高分辨率卫星遥感图像的偏流角及其补偿研究[J].宇航学报,2002,23(5):39-42Wang Zhigang,Yuan Jianping,Chen Shilu,et al.Study on satellite remote sensing high resolution image biasangle and its compensation[J].Journal of Astronautics,2002,23(5):39-42(in Chinese)
[3]王家骐,于平,颜昌翔,等.航天光学遥感器像移速度矢计算数学模型[J].光学学报,2004,24(12):1585-1589Wang Jiaqi,Yu Ping,Yan Changxiang,et al.Space optical remote sensor image motion velocity vector computational modeling[J].Acta Optica Sinica,2004,24(12):1585-1589(in Chinese)
[4]樊超,李英才,易红伟.空间相机中的偏航角分析[J].红外与激光工程,2006,35(s2):216-220Fan Chao,Li Yingcai,Yi Hongwei.Analysis of drift angle on space camera[J].Infrared and Laser Engineering,2006,35(s2):216-220(in Chinese)
[5]袁孝康.星载TDI-CCD推扫相机的偏流角计算与补偿[J].上海航天,2007,23(6):10-13Yuan Xiaokang.Calculation and compensation for the deviant angle of satellite borne TDI-CCD push scan camera[J].Aerospace Shanghai,2007,23(6):10-13(in Chinese)
[6]陈绍龙.侧摆摄影偏航角和速高比的计算模型[J].航天器工程,2010,19(1):36-40Chen Shaolong.Computation model of veer angle and velocity-height ratio for space camera in roll attitude[J].Spacecraft Engineering,2010,19(1):36-40(in Chinese)
[7]王运,颜昌翔.基于差分法的空间相机像移速度矢量计算[J].光学精密工程,2011,19(5):1054-1060Wang Yun,Yan Changxiang.Computation of image motion velocity vector for space camera based on difference method[J].Optics and Precision Engineering,2011,19(5):1054-1060(in Chinese)
[8]景泉.敏捷卫星偏航角计算模型研究[J].航天器工程,2012,21(4):16-20Jing Quan.Research on computation model of bias angle for agile satellite[J].Spacecraft Engineering,2012,21(4):16-20(in Chinese)
[9]黄群东,杨芳,赵键.姿态对地指向不断变化成像时的偏流角分析[J].宇航学报,2012,33(10):1544-1551Huang Qundong,Yang Fang,Zhao Jian.Drift angle analysis for agile satellite imaging when its attitude points to the earth changing continuously[J].Journal of Astronautics,2012,33(10):1544-1551(in Chinese)
[10]Lemaitre M,Verfaillie G,Jouhaud F,et al.How to manage the new generation of agile earth observation satellites[EB/OL].(2000-04-19).[2018-11-05].http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.31.6975&rep=rep1&type=pdf
[11]Verfaillie G,Lema5tre M.Selecting and scheduling observations for agile satellites:some lessons from the constraint reasoning community point of view[C]//Proceedings of Principles and Practice of Constraint Programming-CP 2001.Berlin Heidelberg:Springer,2001:670-684
[12]Habet D,Vasquez M.Saturated and consistent neighborhood for selecting and scheduling photographs of agile earth observing satellite[C]//Proceedings of the5th Metaheuristics International Conference.Kyoto,Japan:MIC,2003:1-6
[13]Dilkina B,Havens B.Agile satellite scheduling via permutation search with constraint propagation[EB/OL].(2005-05-31).[2018-11-05].http://www.cs.sfu.ca/CourseCentral/827/havens/papers/topic%2312(SatelliteScheduling)/SatelliteSched.pdf
[14]Li Y,Xu M,Wang R.Scheduling observations of agile satellites with combined genetic algorithm[C]//Proceedings of the 3rd International Conference on Natural Computation.New York:IEEE,2007:29-33
[15]余婧,于龙江,李少辉,等.敏捷卫星主动推扫成像积分时间设置研究[J].航天器工程,2016,25(5):25-31Yu Jing,Yu Longjiang,Li Shaohui,et al.Study of integral time of TDICCD during active imaging of agile satellite[J].Spacecraft Engineering,2016,25(5):25-31(in Chinese)