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True time-delay beam forming using acousto-optics

机译:使用声光实现真正的延时光束形成

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摘要

Abstract: Wide aperture arrays for transmitting and receiving wideband signals suffer beam broadening when steered away from array normal with phase delays between the array elements. This beam dispersion is eliminated if the signal is time delayed between antenna array elements. This paper describes an acousto-optic signal processing architecture that generates and controls, with the frequency of a single signal, a set of the time delays required for linear antenna array beam forming. This acousto-optic architecture allows an array to scan a beam rapidly over a continuum of angles. Results of analysis are presented showing that a narrow beam can be formed and maintained as it is scanned over a wide range of angles.!11
机译:摘要:当转向偏离阵列法线且阵列元件之间存在相位延迟时,用于发送和接收宽带信号的宽孔径阵列会发生波束展宽。如果信号在天线阵列元件之间有时间延迟,则可以消除这种波束色散。本文介绍了一种声光信号处理体系结构,该体系结构利用单个信号的频率生成和控制线性天线阵列波束形成所需的一组时间延迟。这种声光架构允许阵列在连续的角度范围内快速扫描光束。分析结果表明,当在宽角度范围内扫描时,可以形成并保持窄光束。11

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