• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on atmospheric propagation VI; 20090414-16; Orlando, FL(US) >Free Space Optical Communication Flight Mission: Simulations and experimental results on ground level demonstrator
【24h】

Free Space Optical Communication Flight Mission: Simulations and experimental results on ground level demonstrator

机译：自由空间光通信飞行任务：地面演示器的仿真和实验结果

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the context of the increasing demand in high-speed data link for scientific, planetary exploration and earth observation missions, the Italian Space Agency (ASI), involving Thales Alenia Space as prime, the Polytechnic of Turin and other Italian partners, is developing a program for feasibility demonstration of optical communication system with the goal of a prototype flight mission in the next future. We have designed and analyzed a ground level bidirectional Free Space Optical Communication (FSOC) Breadboard at 2.5Gbit/s working at 1550nm as an emulator of slant path link. The breadboard is lull-working and we tested it back-to-back, at 500m and 2.3km during one month. The distances were chosen in order to get an equivalent slant path cumulative turbulence in a ground level link. The measurements campaign was done during the day and the night time and under several weather conditions, from sunny, rainy or windy. So we could work under very different turbulence conditions from weak to strong turbulence. We measured the scintillation both, on-axis and off-axis by introducing known misalignments at the terminals, transmission losses at both path lengths and BER at both receivers. We present simulations results considering slant and ground level links, where we took into account the atmospheric effects; scintillation, beam spread, beam wander and fade probability, and comparing them with the ground level experimental results, we find a good agreement between them. Finally we discuss the results obtained in the experimentation and in the flight mission simulations in order to apply our experimental results in the next project phases.
机译：在对科学，行星探索和对地观测任务对高速数据链路的需求不断增长的背景下，以泰勒斯·阿莱尼亚太空公司为首的意大利航天局（ASI），都灵理工学院和其他意大利合作伙伴正在开发一种光通信系统可行性演示的程序，目标是在未来的飞行任务原型。我们已经设计并分析了工作在1550nm的2.5Gbit / s的地面双向双向自由空间光通信（FSOC）面包板，作为倾斜路径链路的仿真器。面包板工作缓慢，我们在一个月的时间内分别进行了500m和2.3km的背靠背测试。选择距离是为了在地平面链路中获得等效的倾斜路径累积湍流。在白天和晚上，在晴天，雨天或大风的几种天气条件下进行了测量活动。因此我们可以在从弱湍流到强湍流的非常不同的湍流条件下工作。我们通过在端子处引入已知的未对准，在两个路径长度处的传输损耗以及在两个接收器处的BER来测量同轴和同轴闪烁。在考虑了大气影响的情况下，我们在考虑倾斜和地面连接的情况下给出了模拟结果；闪烁，光束扩展，光束漂移和衰落概率，并将它们与地面实验结果进行比较，我们发现它们之间有很好的一致性。最后，我们讨论了在实验和飞行任务模拟中获得的结果，以便将我们的实验结果应用到下一个项目阶段。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号