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Design of a holographic tracking module for long-range retroreflector free-space systems

机译:远程次射线次射线空间系统的全息跟踪模块设计

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摘要

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 base station is desirable. To realise 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 (MQW) based modulated retro-reflector (MRR) on a commercial UAV. A 2 Mbps optical link was achieved with a bit error rate of ~2x10^-4 at a link range of 300m.
机译:减重和低功耗是下一代无人机(无人机)的关键要求。为了与操作员通信,需要UAV和地基站之间的安全链路。为了实现这些链接,逆向反射空间光学器件可能具有吸引力,因为它在UAV处提供轻量级和低复杂性。然而,基站需要高性能跟踪模块,以实现UAV后向反射器的稳定照明。在本文中,我们介绍了跟踪系统的设计和实现,包括粗略跟踪和全息精细跟踪模块。使用该系统,通过在商业UAV上安装多量子阱(MQW)的调制复古反射器(MRR)来进行实验场试验。在300米的链路范围内以达2x10 ^ -4的误码率实现2 Mbps光链路。

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