We investigate three emerging topics essential for the development of cognitive radar (CR) for spectrum sharing: the response time (RT) of the CR, the autonomous regulation of the perception-action cycle (PAC), and the regulation of cognition. The RT measures the latency of all algorithms/hardware and is examined with respect to enabling capabilities of software-defined systems for rapid flexibility and responsiveness. The autonomous regulation of the PAC determines “how fast the CR can interact with the environment” as well as “how fast the CR should interact with the environment.” The regulation of the PAC is explored with respect to pulse-to-pulse waveform agility to coexist successfully with dynamic radio frequency emitters in the ambient electromagnetic environment (EME) and the consequence of modifying the waveform within the coherent processing interval. Finally, the regulation of cognition determines how to select a particular CR technique appropriately for a given dynamic environment. This selection requires a high level, or metadecision process to identify the appropriate CR technique as the EME changes over time and we therefore concentrate discussion on the newly emerging topic for radar called metacognitive radar. The exploration of these three topics include a review of past and current research with discussion of possible future research.

中文翻译：

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关闭认知雷达的频谱共享循环


我们研究了对于频谱共享认知雷达（CR）的开发至关重要的三个新兴主题：CR 的响应时间（RT）、感知-行动周期（PAC）的自主调节以及认知调节。 RT 测量所有算法/硬件的延迟，并检查软件定义系统的支持能力，以实现快速灵活性和响应能力。 PAC的自主监管决定了“CR与环境交互的速度”以及“CR应该与环境交互的速度”。 PAC 的调节涉及脉冲间波形敏捷性，以便与周围电磁环境 (EME) 中的动态射频发射器成功共存，以及在相干处理间隔内修改波形的结果。最后，认知的调节决定了如何针对给定的动态环境适当地选择特定的 CR 技术。这种选择需要高水平或元决策过程来确定适当的 CR 技术，因为 EME 随着时间的推移而变化，因此我们集中讨论雷达的新主题，称为元认知雷达。对这三个主题的探索包括回顾过去和当前的研究，并讨论未来可能的研究。