光开关串扰及其对光控相控阵列系统的影响研究
Study of Optical Switch Crosstalk and Its Influence on Optically Controlled Phased Array Radar System
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摘要: 建立了光开关时延波束形成网络中光开关串扰和光控相控阵列的模型，在此基础上，通过计算机数值仿真，研究了光开关串扰对光控阵列方向图，包括最大值指向偏移、旁瓣电平的影响以及对阵列接收的线性调频(LFM)雷达信号的脉冲压缩的影响。仿真结果表明光开关的串扰比应小于20dB。Abstract: In this paper, numerical simulation models of crosstalk for optical switch in time-delay beamforming network and of optically phased array are built. Based on the computer simulation, influences of crosstalk on pattern, including pointing deviation and sidelobe level, and on compression of LFM received by an array are studied. Simulation results indicate that the crosstalk ratio in optical switch must be less than 20dB.
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Mailloux R J. Phased Array Antenna Handbook [M].Boston-London: Artech House, 1994: 50一53[2]Lee J J. Photonic wideband array antennas[J].IEEE Traps. on Antennas and Propagation.1995, 43(9):966-[3]Schaffer Christian. Influence of crosstalk in switchable opticall time-delay networks for microwave array antennas[J].花EE Traps. on Microwave and Techniques, 1995, 45(8): 1519一1521.[4]Schaffer Christian, Lubeck F H, Stephensonstr, et al.. Phase noise conversion in switchable time delay networks for microwave signal processing [J]. MWP'97, International Topical Meeting on Microwave photonics. Essen, Germany, 1997, 9(3-5): 265一267. -
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