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提出了一种基于下变频的飞行时间-时间数字转换(TOF-TDC)原理的微波光子传输链路延时抖动测量技术,并详细地阐述了该技术的基本原理、系统构架以及参数设计等。该技术能以飞秒量级的测量精度以及大延时测量范围对信号延时抖动进行测量。环境因素导致的延时抖动严重地影响了高频模拟微波光传输相位传递,进而制约其在光控相控阵等领域中的广泛应用。所提出的延迟抖动测量技术从本质上解决了光传输链路在电子战、宽带雷达等宽带应用场合中稳相传输所遇到的一个基础性问题,具有很大的应用推广潜力。
A time-delay jitter measurement technique based on down-conversion TOF-TDC is proposed. The basic principle, system architecture and parameter design of this technique are described in detail. The technology can measure the signal delay jitter in the femtosecond order of magnitude of the measurement accuracy and large delay measurement range. Delay caused by environmental factors jitter seriously affected the high-frequency microwave transmission phase simulation, and thus restrict its widely used in light control phased array and other fields. The proposed delay jitter measurement technology essentially solves a fundamental problem encountered in the steady-state transmission of optical transmission links in wideband applications such as electronic warfare and wideband radars, and has great potential for application and promotion.