光開關(guān)串擾及其對光控相控陣列系統(tǒng)的影響研究
Study of Optical Switch Crosstalk and Its Influence on Optically Controlled Phased Array Radar System
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摘要: 建立了光開關(guān)時延波束形成網(wǎng)絡中光開關(guān)串擾和光控相控陣列的模型，在此基礎(chǔ)上，通過計算機數(shù)值仿真，研究了光開關(guān)串擾對光控陣列方向圖，包括最大值指向偏移、旁瓣電平的影響以及對陣列接收的線性調(diào)頻(LFM)雷達信號的脈沖壓縮的影響。仿真結(jié)果表明光開關(guān)的串擾比應小于20dB。
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關(guān)鍵詞:
- 光控相控陣雷達;開關(guān)串擾;方向圖;LFM脈沖壓縮
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. -
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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