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一个完全基于光子学的连贯雷达系统.

Paolo Ghelfi1, Francesco Laghezza1, Filippo Scotti1

  • 1National Laboratory of Photonic Networks, Inter-university National Consortium for Telecommunications (CNIT), Via Moruzzi 1, 56124 Pisa, Italy.

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光子学使新一代软件定义无线电 (SDR) 雷达系统成为可能. 这种基于光子学的雷达演示器实现了高分辨率和精度,在更高的频率下表现优于当前的电子系统.

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科学领域:

  • 光子学和雷达系统工程 工程
  • 无线电探测和距离测定 (RADAR) 是一个技术.
  • 光学工程是指光学工程.

背景情况:

  • 下一代雷达需要软件定义无线电 (SDR) 以适应性和更高的频率用于更小的天线和更好的分辨率.
  • 当前的数字微波元件限制了带宽,并在更高的频率中引入噪声,需要模拟上下转换.
  • 光子学为灵活的射频 (RF) 信号生成和直接数字化提供高精度和超宽带宽.

研究的目的:

  • 开发和演示一个完全基于光子学的连贯雷达系统.
  • 使用光子技术克服当前电子雷达组件的局限性.
  • 在现实世界的实地试验中验证基于光子学的雷达的性能.

主要方法:

  • 使用单个脉冲激光来生成可调节的雷达信号和接收回声.
  • 开发了一种基于光子学的架构,可以避免无线电频率上下转换.
  • 进行了实地试验,以测试连贯雷达演示器的性能.

主要成果:

  • 基于光子的雷达演示器实现了高分辨率和精度.
  • 系统性能超过了最先进的电子系统在2千兆赫以上的载波频率.
  • 成功检测到不合作的飞机,证实了系统的有效性.

结论:

  • 一个完全基于光子学的连贯雷达系统是可行的和有效的.
  • 光子学为下一代软件定义雷达系统提供了可行的解决方案.
  • 与高频率的电子系统相比,开发的系统提供了更高的性能.