光域微波信号缓存的关键技术研究

随着雷达、技侦、通信等无线电设备的瞬时工作带宽不断拓展，现有的数字储频（DRFM）技术难以满足现代电子战的要求。然而微波光子技术具有的超大带宽、超低损耗、抗电磁干扰等优秀特性，可很好地提升电子战装备的性能。本文提出了利用微波光子技术在光域内实现微波信号的缓存方法，用于大幅拓展现有数字储频技术的瞬时工作带宽、减小体积功耗、提升抗电磁干扰能力。针对电光调制、超高速光开关等关键技术进行了详细设计，并利用Matlab进行相关技术仿真，搭建了光域微波信号缓存试验系统，对其关键指标进行了验证。

Research on Key Technology of Optical Domain Microwave Signal Buffer

With the continuous expansion of the instantaneous operating bandwidth of radar, technical reconnaissance, communication and other radio equipment, the existing digital radio- frequency memory (DRFM) technology cannot meet the requirements of modern electronic warfare. However, microwave photonic technology has excellent characteristics, such as ultra- wide bandwidth, ultra- low loss and anti- electromagnetic interference, which can improve the performance of electronic warfare equipment. In this paper, a method of microwave signal buffering using microwave photonic technology in optical domain is proposed, which can greatly expand the instantaneous working bandwidth of existing digital radio- frequency memory technology, reduce the volume power consumption and enhance the anti- electromagnetic interference ability. The key technologies, such as electro- optic modulation and ultra- high speed optical switch, are designed in detail, and the related technological simulation is carried out by using MATLAB. Meanwhile, the optical domain microwave signal buffer test system is built, and its key indicators are verified.