Radar identification and countermeasures

先进的射频发射器，如现代雷达，有能力调整其工作模式， 真实的时间。了解他们对电磁频谱的使用以及他们与其他无线电频率用户的共存在军事和民用应用中非常重要。该CRD项目侧重于两个方面： 1.雷达发射分类和估计：从这种发射器辐射的信号取决于发射器的功能、环境、目标回波（如果发射器是雷达）和操作人员的干预。在这个项目中，通过利用各种发射器的动态概率模型，我们的目标是识别/分类发射器，估计其操作模式和预测未来的操作模式。基于截获的信号，这种“模型驱动”方法 便于对复杂的多功能雷达进行快速分类并对其模式（搜索、捕获、跟踪）进行估计。 2.电子对抗措施：移动的平台上的现代多模式传感器的激增和复杂性极大地使电子对抗（ECM）功能复杂化，电子对抗（ECM）功能是为了防止或降低这些传感器使用电磁频谱的有效性而采取的行动。 电子对抗是干扰雷达必不可少的手段。在民用应用中，了解电磁干扰对雷达的影响对于设计 雷达可以与其他用户共存，并在系统存在的情况下有效地运行。 干扰（故意或其他）。在传统的ECM系统中，干扰是在开环中完成的，而不利用后续测量数据中的大量信息。在目前的项目中，我们离开了传统的ECM 方法是根据真实的实时电子对抗信息自适应地控制真实的实时雷达干扰信号。

Sophisticated radio frequency emitters such as modern radars have the ability to adapt their operating mode in real time. Understanding their usage of electromagnetic spectrum and their coexistence with other radio frequency users is important in military and civilian applications. This CRD project focuses on two aspects: 1. Radar Emitter Classification and Estimation: Signals radiated from such emitters depend on the functionality of the emitter, the environment, target returns (if the emitter is a radar) and human operator intervention. In this project, by exploiting probabilistic models for the dynamics of various emitters, our aim is to identify/classify emitters, estimate their operating mode and predict future operating modes. Based on the intercepted signals, such a "model driven" approach facilitates rapid classification of sophisticated multi-function radars and estimation of their mode (search, acquisition, track). 2.Electronic Countermeasures: The proliferation and complexity of modern multimode sensors on mobile platforms greatly complicates electronic countermeasure (ECM) functions, which are actions taken to prevent or reduce the effectiveness of these sensors use of the electromagnetic spectrum. Electronic countermeasures are essential for jamming radars. In civilian applications, understanding the effect of electromagnetic interference on radars is essential for designing radars that can co-exist with other users, and operate efficiently in the presence of systematic interference (deliberate or otherwise). In conventional ECM systems, jamming is done in open loop without exploiting substantial information in subsequent measured data. In the current project, we depart from conventional ECM approaches by adaptively controlling the real time radar jamming signal in response to real time ECM information.