首页> 外文期刊>Nature >Photonics illuminates the future of radar
【24h】

Photonics illuminates the future of radar

机译:光子学照亮了雷达的未来

获取原文
获取原文并翻译 | 示例
           

摘要

For well over a decade, there has been intense pursuit of photonic techniques for the synthesis and processing of broadband radio-frequency signals in applications ranging from wireless communications to radar. Such work is motivated by one main challenge: the lack of electronic systems capable of directly generating, processing and digitizing signals that have high central frequencies and large bandwidths while maintaining signal fidelity (minimal spurious-signal content and low noise levels). That challenge is sure to remain, given the escalating interest in higher centre frequencies and greater signal agility for software-defined radio and radar architectures - those in which the desired signal can be rapidly changed under software control. Such signal agility could offer, for example, increased radar resolution. On page 341 of this issue, Ghelfi et al. describe the first field demonstration of a coherent radar system based on photonic techniques. Their work shows that such techniques may indeed provide capability for next-generation radar systems.
机译:十多年来,人们一直在追求光子技术,以在从无线通信到雷达的各种应用中合成和处理宽带射频信号。开展这项工作的主要挑战是:缺乏能够直接产生,处理和数字化具有高中心频率和大带宽的信号,同时又保持信号保真度(最小杂散信号含量和低噪声水平)的电子系统。鉴于对软件定义的无线电和雷达架构的更高中心频率和更大信号敏捷性的兴趣日益浓厚,这些挑战肯定会继续存在,在这些架构中,可以在软件控制下快速更改所需信号。这种信号敏捷性可以提高雷达分辨率。在本期的第341页,Ghelfi等人。描述了基于光子技术的相干雷达系统的首次现场演示。他们的工作表明,这种技术确实可以为下一代雷达系统提供功能。

著录项

  • 来源
    《Nature》 |2014年第7492期|310-312|共3页
  • 作者

    JASON D. MCKINNEY;

  • 作者单位

    Microwave Photonics Section, Optical Sciences Division, US Naval Research Laboratory, Washington DC 20375, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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