基于微波光子的光学波束合成理论与仿真

Theory and Simulation of Optical Beamforming Based on Microwave Photonics

摘要:

光学波束合成技术是利用光信号作为载波携带射频信息而实现的一种新型的宽带射频波束合成技术,即用光信号来传输以及分配射频信号,实现射频信号的光波控制。文章介绍了基于微波光子的光学波束合成原理,重点介绍了光非相干和光相干波束合成架构,通过详细的理论公式推导以及软件仿真,表明上述两种光学波束合成架构可对多天线接收信号实现信号合成。针对目前大阵列天线单元系统对光学波束合成技术的迫切需求,利用光相干和非相干波束合成的各自优势,提出了一种适用于千量级天线阵列规模的光学波束合成架构,为光学波束合成技术在相控阵雷达、电子对抗等领域的应用提供解决方案。

Abstract:

Optical beamforming technology is a new type of broadband RF beamforming technology, which uses optical signal as the carrier to carry RF information, which means it uses optical signal to transmit and distribute RF signal to realize the control of RF signal. In this paper, the principle of optical beamforming based on microwave photonics is introduced, focusing on the optical incoherent beamforming architecture and optical coherent beamforming architecture. Through detailed theoretical formula derivation and software simulation, it is shown that the above two kinds of optical beamforming architectures can realize the signal synthesis for the received signals of multiple antennas. In view of the urgent demand of large array antenna units system for optical beamforming technology, proposed is an optical beamforming architecture suitable for the scale of thousand antennas by using the advantages of optical coherent and incoherent beamforming. It provides solution for the application of optical beamforming technology in phased array radar, electronic countermeasure and other fields.