"Study of the LPI (Low Probability of Intercept) properties of multifunction seeker waveforms based on 3D antennas and robustness against jamming."

射频（RF）导引头使用机械操纵的天线。这限制了导引头对潜在目标的覆盖范围，也增加了与提供扫描速率相关的运动部件的故障导致的雷达故障。研究人员已经着手开发一种电子操纵的3D天线阵列。新的天线将提供比机械操纵系统更快的扫描速度和更高的精度，以及能够在所有方向上引导波束的更大覆盖范围。新的3D天线还将能够同时产生多个波束，并可能在多功能模式下运行，同时增加在目标上的停留时间。这个博士学位是关于干扰新型射频导弹导引头以保护资产不被导弹摧毁。这是关于使用2D或3D相控天线的导引头，能够同时执行多个任务，例如使用多个同步波束来跟踪目标并提供高度信息。在这种情况下，干扰可以被定义为发射一种波形，这种波形会降低导引头引导导弹到达目标的能力。实际实施干扰技术的场景是保护舰船免受可能使用新型天线和波形的远程巡航导弹的攻击。在这个项目中，我们建议研究三维导引头的脆弱性，并研究导引头的模式在干扰方面的鲁棒性。

Radio Frequency (RF) Seekers use a mechanically steered antenna. This restricts the seeker's coverage of potential targets, as well as increasing radar failures by the failure of the moving parts associated with providing the scan rate. Research has been undertaken to develop an electronically steered 3D antenna array. The new antenna will provide a much faster scan rate with greater accuracy than the mechanically steered system, as well as a greater coverage by being able to steer beams in all directions. The new 3D antenna will also be able to generate multiple simultaneous beams and potentially operate in multifunction mode as well as having an increased dwell time on the target.This PhD is about jamming novel RF missile seekers to protect assets from being destroyed by a missile. This is with respect to seekers which use 2D or 3D phased antennas to be able to conduct multiple tasks at the same time such as using multiple simultaneous beams to track a target and provide altimetry information. Jamming in this context can be defined as transmitting a waveform which reduces the seeker's ability to guide the missile to its target. The scenario to a practical implementation of the jamming techniques is to defend ships from long range cruise missiles that could be using the novel antenna and waveforms.In this project, we propose to investigate the vulnerability of the 3D seeker and investigate the robustness of the seeker's modes with respect to jamming.