基于空频域特征的白天星地信标光跟踪算法
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摘要
提出了一种白天信标光图像跟踪算法。分析了太阳光反射进相机视场的噪声以及探测器噪声在空域和频域的特点,使用两个频域滤波器检测候选区域。研究结果表明,所提算法具有较高的精度、较快的速度以及较高的可靠性,可用于白天环境下星地信标光的跟踪探测。
A beacon image tracking algorithm during daytime is proposed.The camera view field noise reflected by sunlight and detector noise in the spatial and frequency domains are analyzed.Two frequency domain filters are used to detect candidate regions.The results show that the algorithm has high precision,high speed,and high reliability,and can be applied to the daytime satellite-to-ground beacon tracking.
A beacon image tracking algorithm during daytime is proposed.The camera view field noise reflected by sunlight and detector noise in the spatial and frequency domains are analyzed.Two frequency domain filters are used to detect candidate regions.The results show that the algorithm has high precision,high speed,and high reliability,and can be applied to the daytime satellite-to-ground beacon tracking.
引文
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[11]Zhang Z P.Study in the algorithm of beacon light prediction and tracking in satellite laser communication[D].Harbin:Harbin Institute of Technology,2016.张志平.空间光通信信标光预测跟踪算法研究[D]哈尔滨:哈尔滨工业大学,2016.
[12]Gao S J,Sheng L,Wu Z Y,et al.Rapid restoration and real-time detection on spot image of atmospheric laser communication[J].Optics and Precision Engineering,2015,23(8):2393-2399.高世杰,盛磊,吴志勇,等.大气激光通信光斑图像的快速复原与实时检测[J].光学精密工程,2015,23(8):2393-2399.
[13]Yu S Y,Han Q Q,Ma J,et al.Size selection of dispersive spot imaging on CCD in a satellite optical communication terminal[J].Chinese Journal of Lasers,2007,34(1):69-73.于思源,韩琦琦,马晶,等.卫星光通信终端CCD成像光斑弥散圆尺寸选择[J].中国激光,2007,34(1):69-73.
[2]Oaida B V,Wu W,Erkmen B I,et al.Optical link design and validation testing of the Optical Payload for Lasercomm Science(OPALS)system[J].Proceedings of SPIE,2014,8971:89710U.
[3]Jono T,Takayama Y,Shiratama K,et al.Overview of the inter-orbit and the orbit-to-ground laser communication demonstration by OICETS[J].Proceedings of SPIE,2007,6457:645702.
[4]Sova R M,Young D W,Juarez J C,et al.80Gb/s free-space optical communication demonstration between an aerostat and a ground terminal[J].Proceedings of SPIE,2006,6304:630414.
[5]Kaymak Y,Rojas-Cessa R,Feng J H,et al.Asurvey on acquisition,tracking,and pointing mechanisms for mobile free-space optical communications[J].IEEE Communications Surveys&Tutorials,2018,20(2):1104-1123.
[6]Qian F,Jia J J,Zhang L,et al.Defective pixel correction of spot-detecting camera in satellite-toground laser communication ATP system[J].Chinese Journal of Lasers,2014,41(5):0505007.钱锋,贾建军,张亮,等.星地激光通信ATP系统探测相机的坏点校正[J].中国激光,2014,41(5):0505007.
[7]Chen S J,Zhang L,Wang J Y.Effect of stripe noise of detector on light spot location of fine tracking system[J].Chinese Journal of Lasers,2017,44(9):0906008.陈少杰,张亮,王建宇.探测器条状噪声对精跟踪系统光斑定位的影响[J].中国激光,2017,44(9):0906008.
[8]Abrahamson M J,Biswas A.Achieving operational two-way laser acquisition for OPALS payload on the International Space Station[J].Proceedings of SPIE,2015,9354:935408.
[9]Zuo T,Xiao Y J,Huang H B.Design and experiment of coarse tracking for beacon on the lake surface in FSO communications[J].Journal of Optoelectronics·Laser,2012,23(3):489-494.左韬,肖永军,黄海波.湖面自由空间光通信信标光的粗跟踪设计与实验[J].光电子·激光,2012,23(3):489-494.
[10]Zhang L.Research on beacon spot image algorithm in satellite-ground optical communication[D].Harbin:Harbin Institute of Technology,2016.张丽.星地光通信中的信标成像光斑定位算法研究[D].哈尔滨:哈尔滨工业大学,2016.
[11]Zhang Z P.Study in the algorithm of beacon light prediction and tracking in satellite laser communication[D].Harbin:Harbin Institute of Technology,2016.张志平.空间光通信信标光预测跟踪算法研究[D]哈尔滨:哈尔滨工业大学,2016.
[12]Gao S J,Sheng L,Wu Z Y,et al.Rapid restoration and real-time detection on spot image of atmospheric laser communication[J].Optics and Precision Engineering,2015,23(8):2393-2399.高世杰,盛磊,吴志勇,等.大气激光通信光斑图像的快速复原与实时检测[J].光学精密工程,2015,23(8):2393-2399.
[13]Yu S Y,Han Q Q,Ma J,et al.Size selection of dispersive spot imaging on CCD in a satellite optical communication terminal[J].Chinese Journal of Lasers,2007,34(1):69-73.于思源,韩琦琦,马晶,等.卫星光通信终端CCD成像光斑弥散圆尺寸选择[J].中国激光,2007,34(1):69-73.