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文中提出了一种基于光纤色散真时延技术的光控相控阵雷达多波束接收网络。该网络制作原理是根据光纤的色散特性,主要由密集波分复用器(DWDM)和光纤延时模块构成。DWDM实现对多通道光合成,多个光开关和光纤延时环组成的光纤延时模块实现对合成的多路光载波进行延时量调节,从而实现波束扫描。依据原理方案,研制了一套16通道光接收、双波束形成网络,实现从-40°到+45°的16个不同波束指向扫描,切换速度≤30μs。暗室测试证明了其波束形成能力。
In this paper, a multi-beam receiving network of light-controlled phased array radar based on true dispersion of optical fiber dispersion is proposed. The network production principle is based on the dispersion characteristics of optical fiber, mainly by dense wavelength division multiplexer (DWDM) and fiber delay module. The DWDM realizes the beam scanning by implementing the delay module of optical fiber composed of multi-channel light synthesis, multiple optical switches and fiber delay ring. According to the principle scheme, a 16-channel optical receiver and dual-beam forming network was developed to realize 16 different beam-pointing scans from -40 ° to + 45 ° with the switching speed of ≤30μs. Darkroom testing proves its beamforming ability.