A new architecture for a widely distributed dual-band coherent multiple-input multiple-output (MIMO) radar system is illustrated, and its implementation and testing are reported. The system consists in a central unit where radar signals are coherently generated and detected, which serves multiple remote sensors connected over transparent WDM optical network. Every remote node operates coherently both in the S- and X-band, and is displaced over distances of several kilometers, allowing to monitor a scene under different angles of view. All the remote sensors share the same oscillator and digital signal processing unit, both located in the central office, allowing to perform centralized raw data fusion on the acquired signals. By virtue of the system coherence, the system takes advantage of the coherent MIMO processing strategy to offer a superior spatial resolution, which is even magnified by the dual-band approach.

中文翻译：

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用于港口监视的广泛分布的基于光子学的双频 MIMO 雷达

阐述了一种用于广泛分布的双频带相干多输入多输出 (MIMO) 雷达系统的新架构，并报告了其实现和测试。该系统由一个中央单元组成，在该单元中以相干方式生成和检测雷达信号，该单元为通过透明 WDM 光网络连接的多个远程传感器提供服务。每个远程节点都在 S 波段和 X 波段内连贯地运行，并在几公里的距离内移动，从而可以在不同的视角下监控场景。所有远程传感器共享相同的振荡器和数字信号处理单元，均位于中心局，允许对采集的信号执行集中的原始数据融合。凭借系统的连贯性，