光控相控阵雷达

由于孔径效应和孔径渡越时间的限制，传统的相控阵雷达难以在大扫描角下实现大瞬时带宽。把光纤技术应用于相控阵雷达，主要包括光纤延迟线形成相控阵雷达波束所需的相移、电光相控阵发射机中采用集成光学进行波束形成，用光纤技术进行天线的灵活遥控、利用光纤色散棱镜技术的宽带光纤实时延迟相控阵接收机等，可以在大扫描角下实现大瞬时带宽，在提高雷达的分辨率、识别能力、解决多目标成像、对抗反辐射导弹、简化结构、减小体积、重量、抗恶劣电磁环境、容易维护等方面有巨大的优势。由此形成的光控相控阵雷达目前具有重大的理论意义和实践意义。

Optically Controlled Phased Array Antenna

Due to the restriction of aperture effect and the aperture traverse delay, it is difficult for a conventional phased array radar to get wide instantaneous bandwidth under wide scan scope. The implementation of photonics technology into phased arrays, including the replacement of conventional phase shifters by fiber optic delay lines, beamforming with synthesis optical optics in the OCPAA emitter, agility remote control with optic fiber, realization of wide bandwidth real-time fiber-delay-line phased array receiver, etc, can reach a wide instantaneous bandwidth under wide scan scope as well as takes great advantages in respects as improvement of resolution, enhancement of detection capability, imaging of multi-target, resistance potential to guided anti-emission missile, simplification of structure, reduced bulk and weight, accommodation to adverse electromagnetic environments, easy maintenance, etc. The research of OCPAA is of great value, both in theory and in practice.