• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Free-Space Laser Communication Technology XV Jan 28, 2003 San Jose, California, USA >Design and development of a robust ATP subsystem for the Altair UAV-to-Ground Lasercomm 2.5 Gbps Demonstration
【24h】

Design and development of a robust ATP subsystem for the Altair UAV-to-Ground Lasercomm 2.5 Gbps Demonstration

机译：用于Altair无人机到地面Lasercomm 2.5 Gbps演示的强大ATP子系统的设计和开发

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

A robust acquisition, tracking and pointing (ATP) subsystem is being developed for the 2.5 Gigabit per second (Gbps) Unmanned-Aerial-Vehicle (UAV) to ground free-space optical communications link project. The demonstration will gather HDTV images of regions of geological interest (e.g. volcanic) and then downlink those images to ground receivers at a range of 50 km while the UAV is at an altitude of 18 km. With a 200 mW downlink laser at 1550 nm for a BER of 1E-9, the pointing requirements on the flight terminal are a jitter error of 19.5 urad and a bias error of 14.5 urad with a probability of pointing induced fades of 0.1 %. In order to mitigate the effect of atmospheric fades and deal with UAV flight and vibration uncertainties (relatively new craft) the ATP subsystem requirements have been set to a stringent level in order to assure success of the communication link. The design, analysis and development of this robust ATP subsystem will be described in this paper. The key innovations that have been developed to make the ATP subsystem robust are ⅰ) the application of inertial sensors to make the acquisition and tracking functions tolerant to atmospheric fades, ⅱ) the usage of active exposure control to provide a 16 dB dynamic range on the Focal Plane Array (FPA) tracking window, and ⅲ) the introduction of a second ultra wide field of view camera to assure acquisition of the ground beacon.
机译：一个健壮的采集，跟踪和指向（ATP）子系统正在开发，用于2.5 Gbit / s（Gbps）的无人机和地面自由空间光通信链路项目。该演示将收集具有地质意义的区域（例如火山）的HDTV图像，然后将这些图像下行到50 km范围内的地面接收器，而无人机则在18 km高度上。使用200 mW下行链路激光器在1550 nm处的BER为1E-9时，在飞行终端上的指向要求是19.5 urad的抖动误差和14.5 urad的偏置误差，指向引起的衰落概率为0.1％。为了减轻大气衰落的影响并应对无人机飞行和振动的不确定性（相对较新的技术），已将ATP子系统要求设置为严格级别，以确保通信链路成功。本文将描述这种强大的ATP子系统的设计，分析和开发。为使ATP子系统健壮而进行的关键创新包括：ⅰ）惯性传感器的应用，以使采集和跟踪功能能够耐受大气衰落；ⅱ）使用主动曝光控制，在ATP子系统上提供16 dB的动态范围焦平面阵列（FPA）跟踪窗口，以及ⅲ）引入了第二个超广角摄像头，以确保获取地面信标。

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