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首页> 外文会议>Free-Space Laser Communications VI >Using a GPS-Aided Inertial System for Coarse-Pointing of Free-Space Optical Communication Terminals
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Using a GPS-Aided Inertial System for Coarse-Pointing of Free-Space Optical Communication Terminals

机译：使用GPS辅助惯性系统对自由空间光通信终端进行粗指向

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摘要

In the Capanina project, it has been shown that it is possible to use solely GPS positions for coarse-pointing of a stratospheric free-space optical communication terminal. Although this system design has been shown to be functional, it has to deal with acquisition and reacquisition times of up to 20 seconds. Whenever the line of sight is blocked, the Capanina terminal has to do a reacquisition of the partner terminal. In land-mobile systems, e.g. transmission between a moving vehicle and a fixed station, where objects like trees or buildings can frequently block the line of sight, this type of acquisition/reacquisition is not acceptable. In this paper a revised system design will be shown, which reduces the initial acquisition time to below a second by using information from a GPS-Aided Inertial System (GPS-INS). It will also be shown how reacquisition times and coarse-pointing errors can be reduced to a minimum by using feedback from the optical fine-pointing device. Finally a demonstrator setup and some test results will be presented.
机译：在Capanina项目中，已经表明可以仅将GPS位置用于平流层自由空间光通信终端的粗略指向。尽管已证明该系统设计是可行的，但它必须处理长达20秒的采集和重新采集时间。每当视线被遮挡时，Capanina终端机都必须重新获取对方终端机。在陆地移动系统中，例如在移动车辆和固定站点之间的传输中，树木或建筑物等物体经常会挡住视线，这种类型的获取/重新获取是不可接受的。在本文中，将显示经过修改的系统设计，该设计将通过使用来自GPS辅助惯性系统（GPS-INS）的信息将初始采集时间减少到一秒钟以下。还将显示如何通过使用光学细指向设备的反馈将重新获取时间和粗指向错误减少到最小。最后，将展示演示器的设置和一些测试结果。

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