Design of a holographic tracking module for long-range retroreflector free-space systems
Design of a holographic tracking module for long-range retroreflector free-space systems
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DOI：
10.1364/ao.55.007173
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发表时间：
2016-09-01
期刊：
影响因子：
1.9
通讯作者：
O'Brien, D. C.
中科院分区：
文献类型：
--
作者：
Quintana, C.;Erry, G.;O'Brien, D. C.
减轻重量和低功耗是下一代无人机（UAV）的关键要求。为了与操作员通信，需要UAV与地面站之间的安全链路。为了实现这些链接，回射自由空间光学系统是潜在的有吸引力的，因为它提供了重量轻，复杂性低的无人机。然而，基站需要高性能的跟踪模块来实现UAV后向反射器的稳定照明。本文设计并实现了一个由粗跟踪模块和全息精跟踪模块协同工作的跟踪系统。利用该系统，通过在商用无人机上安装基于多量子阱的调制后向反射器进行了外场试验。在300 m的链路范围内实现了2 Mbps的光链路，误码率接近2 x 10（-4）。(C)2016美国光学学会
Weight reduction and low power consumption are key requirements in the next generation of unmanned aerial vehicles (UAVs). To communicate with an operator, a secured link between the UAV and a ground-based station is desirable. To realize these links, retroreflecting free-space optics is potentially attractive as it offers light weight and low complexity at the UAV. However, the base station requires a high-performance tracking module to enable a steady illumination of the UAV retroreflector. In this paper, we present the design and implementation of a tracking system, which consists of coarse tracking and holographic fine tracking modules working cooperatively. Using this system, experimental field trials were carried out by mounting a multiple-quantum-well-based modulated retroreflector on a commercial UAV. A 2 Mbps optical link was achieved with a bit error rate of similar to 2 x 10(-4) at a link range of 300 m. (C) 2016 Optical Society of America