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

无线电频率(RF)导引头使用机械操纵天线。这限制了导引头对潜在目标的覆盖范围，并增加了雷达故障，因为与提供扫描速度相关的移动部件故障。已经开始研究开发一种电子操纵的3D天线阵。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，并且能够在所有方向上操纵波束，从而扩大覆盖范围。新的3D天线还将能够同时产生多个波束，并有可能在多功能模式下操作，以及增加目标的停留时间。这个PHD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相控天线以能够同时执行多个任务的导引头，例如使用多个同时波束来跟踪目标并提供测高信息。在这种情况下，干扰可以被定义为发射降低导引头将导弹引向目标的能力的波形。干扰技术的实际实施方案是防御可能使用新型天线和波形的远程巡航导弹。在这个项目中，我们建议调查3D导引头的脆弱性，并研究导引头模式对干扰的稳健性。

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.