【摘要】 卫星光通信(IOC)的跟瞄(PAT)子系统中,高的角度偏差检测频率对于保证链路稳定和通信质量具有重要价值。针对高速PAT角度偏差检测的需要,设计了一种基于二元光学器件(BOE)的新型角度探测装置,并给出用于此装置的改进光斑形心算法。入射到光通信终端的光束经BOE的整形和聚焦后,通过线阵CCD即可实现二维角度偏差探测。仿真结果表明,角度探测频率可达数10 kHz,最大测角相对偏差2.84%,BOE效率83.9%。与传统的面阵CCD二维测角装置相比,新装置算法复杂度由O(N2)降低到O(N),同时系统的硬件部分复杂度也得到了极大简化。更多还原

【Abstract】 In intersatellite optical communications(IOC),a pointing-acquisition-tracking(PAT) subsystem with high angular error detection frequency is a matter of a great importance for the assurance of the stability of laser link and the quality of communication.To satisfy the need of high speed PAT angular error detection devices,a new detection device based on binary optics element(BOE) and an improved facular centroid algorithm adopted in this device are presented.After incident optical beam is focused and shapod by a BOE,two dimensional angular detection can be accomplished by an one dimensional linear scan CCD.The simulation results have shown an angular detection frequency of tens of kHz,an angular detection error of 2.84% and a BOE efficiency of 83.9%.Compared with the traditional angular detection device based on surface scan CCD,the algorithm complexity is decreased from O(N~2) to O(N) and the hardware complexity can also be highly simplified in this new device.更多还原