一致的多频段MIMO雷达:对基于SSMF的射频信号传输的稳定性分析
Optics letters
|March 15, 2024
概括
本研究评估了通过光纤的射频 (RF) 信号分布如何影响连贯的多频段多输入多输出 (MIMO) 雷达性能. 结果表明,即使使用长光纤链接和经济的射频振荡器,系统也很强大.
科学领域:
- 电气工程 电气工程
- 雷达系统 雷达系统
- 光学通信是指光学通信.
背景情况:
- 一致的多频段MIMO雷达系统提供了先进的功能,但面临着分布式天线架构的挑战.
- 在光纤链路上分发射频 (RF) 信号引入相位噪声 (PN),这可能会降低系统性能.
研究的目的:
- 在一个连贯的多频段MIMO雷达系统中,通过光纤对射频信号分布的性能影响进行数值评估.
- 开发一种模型来量化光纤传输产生的相位噪声 (PN).
- 为了评估系统在各种光纤长度和相位噪声条件下的强度.
主要方法:
- 使用蒙特卡洛模拟进行数值评估.
- 从色色分散 (CD),双雷利散射 (DRS) 和机械振动中对相位噪声 (PN) 贡献的建模.
- 对不同标准单模光纤 (SSMF) 长度的关键性能指标 (KPIs) 的分析.
主要成果:
- 阶段噪声 (PN) 主要是由色色分散 (CD),双雷利散射 (DRS) 和机械振动引起的.
- 在船载场景中,显著的性能下降发生在大约20公里的光纤链路长度之外.
- 集中采购和处理方法在长光纤链路和经济的射频振荡器上表现出极好的稳定性.
结论:
- 拟议的集中式雷达架构能够抵御由长光纤链路引入的相位噪声.
- 经济的射频振荡器可以在不显著损害系统性能的情况下使用.
- 这些发现支持使用光纤基础设施部署分布式连贯的多频段MIMO雷达系统的可行性.
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