Modeling of Fine Tracking Sensor for Free Space Laser Communication Systems

Z. Hu, Zhengxun Song, S. Tong, Zhao Xin, Hongfei Song, Huilin Jiang
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引用次数: 7

Abstract

The optical communication networks comprised of ground stations, aircraft, high altitude platforms, and satellites become an attainable goal, however, some challenges need to be overcome. One of challenges involves the difficulty of acquisition, tracking, and pointing (ATP) a concentrated beam of light arriving from another platform across the far reach of space. To meet the pointing accuracy requirement, the basic method of tracking between the terminals of optical communication systems includes the use of a beacon laser and tracking system with a quadrant detector sensor on each terminal. In some future optical communication networks, it is plausible to assume that tracking system and communication receivers will use the same sensor. In this paper, the architecture of the fine tracking assembly of the designing optical communication terminal (OCT) is described, and the fine tracking assembly sensor is modeled based on the correlation coefficient. The simulation and experiment results of the sensor show that the detecting accuracy satisfies the design demand for our developing OCT. Keywords-modeling; quadrant detector; fine tracking sensor; optical communication networks
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自由空间激光通信系统精细跟踪传感器建模
由地面站、飞机、高空平台和卫星组成的光通信网络已成为可实现的目标,但仍需克服一些挑战。其中一个挑战是难以获取、跟踪和指向(ATP)来自遥远太空的另一个平台的集中光束。为了满足指向精度的要求,光通信系统终端间跟踪的基本方法包括使用信标激光器和在每个终端上安装象限检测器传感器的跟踪系统。在未来的光通信网络中,跟踪系统和通信接收器将使用相同的传感器是合理的。本文描述了设计光通信终端(OCT)的精细跟踪组件的结构,并基于相关系数对精细跟踪组件传感器进行了建模。仿真和实验结果表明,该传感器的检测精度满足我国正在开发的oct的设计要求。象限探测器;精细跟踪传感器;光通信网络
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