光学遥感卫星飞轮微振动仿真和地面实验研究
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摘要
为了对光学遥感卫星中飞轮微振动带来的成像像移进行精确预估,研究了飞轮微振动对成像影响的相关机理,建立了理论分析模型,搭建了高仿真度实验测量平台.研究微振动对成像影响机理,构建从飞轮扰振特性到成像像移之间的传递函数表达式,理论证明了谐波特性和模态特性是飞轮微振动对成像像移影响的两大重要特性.搭建高仿真度的实验平台对微振动影响下的图像像移进行精确测量.对比理论模型分析所得像移和实验测量数据,分析两者结果不一致产生的原因.结果表明:理论与测量的像移结果中谐波特性非常一致,两者具有几乎一致的典型的谐波因子;模态特性在低频段具有较高一致性,中低频段误差在8%以内.
In order to evaluate the jitter affection brought up by flywheel in optical satellite,this paper studies the principles in the jitter affection,promotes a theoretical analytical model and constructs a testbed with high fidelity.By studying the principles in the jitter affection,the transfer fuctions between input disturbances and output image motion are achieved,meanwhile,the harmonical and modal characteristics are proved theoretically.Secondly,a testbed with high fidelity is constructed to measure the real affected image motion.Finally,this paper compares the analytical data and test data and analyzes the reasons that brings in the differences.The results indicate that the harmonical characteristics in analytical data and test data coincide with each other well,the typical harmonic factors contained are almost the same.The modal characteristics are similar at low and medium frequencies within 8% error.
In order to evaluate the jitter affection brought up by flywheel in optical satellite,this paper studies the principles in the jitter affection,promotes a theoretical analytical model and constructs a testbed with high fidelity.By studying the principles in the jitter affection,the transfer fuctions between input disturbances and output image motion are achieved,meanwhile,the harmonical and modal characteristics are proved theoretically.Secondly,a testbed with high fidelity is constructed to measure the real affected image motion.Finally,this paper compares the analytical data and test data and analyzes the reasons that brings in the differences.The results indicate that the harmonical characteristics in analytical data and test data coincide with each other well,the typical harmonic factors contained are almost the same.The modal characteristics are similar at low and medium frequencies within 8% error.
引文
[1]LI Lin,WANG Dong,XU Jing,et al.Influence of micro-vibration of flywheel components on optical axis of high resolution optical satellite[J].Optical and Precision Engineering,2016,24(10):2515-2522.李林,王栋,徐婧,等.飞轮组件微振动对高分辨率光学卫星光轴的影响[J].光学精密工程,2016,24(10):2515-2522.
[2]WANG Hong-juan,WANG Wei,WANG Xin,et al.Space camera image degradation induced by satellite micro-vibration[J].Acta Photonica Sinica,2013,42(10):1212-1217.王红娟,王炜,王欣,等.航天器微振动对空间相机像质的影响[J].光子学报,2013,42(10):1212-1217.
[3]MILLER D W,de WECK O L.Integrated dynamics and controls modeling for the Space Interferometry Mission(SIM)[C].Aerospace Conference,IEEE Proceedings,2002,4(4):2089-2102.
[4]HYDE T T,KONG Q H,HOWARD J M,et al.Integrated modeling activities for the james webb space telescope:optical jitter analysis[C].SPIE,2004,5487:588-599.
[5]LIU K C,MAGHAMI P,BLAUROCK C.Reaction wheel disturbance modeling,jitter analysis,and validation tests for solar dynamics observatory[C].AIAA,2013.
[6]YOSHIDA N,TAKAHARA O,KOSUGI T,et al.Systematic approach to achieve fine pointing requirement of SOLAR-B[C].IFAC Proceedings,2004,37(6):101-106.
[7]WANG Ze-yu,ZHOU Yuan-jie,JIAO An-chao,et al.The jitter measurement and analysis for a remote sensing satellite platform[J].Spacecraft Environment Engineering,2015,32(3):278-285.王泽宇,邹元杰,焦安超,等.某遥感卫星平台的微振动试验研究[J].航天器环境工程,2015,32(3):278-285.
[8]关新.高分辨率遥感卫星隔振与姿态控制一体化设计[D].北京,清华大学,2012.
[9]ZHANG Bo-wen.Analysis on effect of micro-vibration on rigid-body space camera imaging[J].Bulletin of Surveying&Mapping,2014,S0:65-69.张博文.微振动对刚体空间相机图像质量的影响分析[J].测绘通报,2014,S0:65-69
[10]HADAR O,KOPEIKA N S.Image resolution limits resulting from mechanical vibrations.Part III:numerical calculation of modulation transfer function[J].Optical Engineering,1992,31(3):581-589.
[11]OPPENHEIM V A,WILLSKY A S,NAWAB S H.Signal and systems[M].New Jersey:Prentice Hall,2009.
[2]WANG Hong-juan,WANG Wei,WANG Xin,et al.Space camera image degradation induced by satellite micro-vibration[J].Acta Photonica Sinica,2013,42(10):1212-1217.王红娟,王炜,王欣,等.航天器微振动对空间相机像质的影响[J].光子学报,2013,42(10):1212-1217.
[3]MILLER D W,de WECK O L.Integrated dynamics and controls modeling for the Space Interferometry Mission(SIM)[C].Aerospace Conference,IEEE Proceedings,2002,4(4):2089-2102.
[4]HYDE T T,KONG Q H,HOWARD J M,et al.Integrated modeling activities for the james webb space telescope:optical jitter analysis[C].SPIE,2004,5487:588-599.
[5]LIU K C,MAGHAMI P,BLAUROCK C.Reaction wheel disturbance modeling,jitter analysis,and validation tests for solar dynamics observatory[C].AIAA,2013.
[6]YOSHIDA N,TAKAHARA O,KOSUGI T,et al.Systematic approach to achieve fine pointing requirement of SOLAR-B[C].IFAC Proceedings,2004,37(6):101-106.
[7]WANG Ze-yu,ZHOU Yuan-jie,JIAO An-chao,et al.The jitter measurement and analysis for a remote sensing satellite platform[J].Spacecraft Environment Engineering,2015,32(3):278-285.王泽宇,邹元杰,焦安超,等.某遥感卫星平台的微振动试验研究[J].航天器环境工程,2015,32(3):278-285.
[8]关新.高分辨率遥感卫星隔振与姿态控制一体化设计[D].北京,清华大学,2012.
[9]ZHANG Bo-wen.Analysis on effect of micro-vibration on rigid-body space camera imaging[J].Bulletin of Surveying&Mapping,2014,S0:65-69.张博文.微振动对刚体空间相机图像质量的影响分析[J].测绘通报,2014,S0:65-69
[10]HADAR O,KOPEIKA N S.Image resolution limits resulting from mechanical vibrations.Part III:numerical calculation of modulation transfer function[J].Optical Engineering,1992,31(3):581-589.
[11]OPPENHEIM V A,WILLSKY A S,NAWAB S H.Signal and systems[M].New Jersey:Prentice Hall,2009.