光纤储频技术研究

发布时间：2018-10-17 21:05

【摘要】：模拟储频技术可以通过模拟器件将输入的雷达信号完整地保存下来,并能够对其重构及调制转发。模拟储频设备结构简单,且瞬时带宽较大,是某些对抗设备的重要组成部分。光纤延迟线凭借其优良特性,正被广泛应用于模拟储频设备中,光纤储频技术得到迅速发展。本文在模拟储频技术的基础上,详细分析了光纤储频原理,提出了前馈式及反馈式光纤储频装置的构成及技术指标,并比较几种信号的储存方式,研究了准示样储频方式对信号的影响。通过对多模光纤带宽和衰减及多模耦合器性能的分析,得到了光纤储频技术处理多信号的系统构成。此外本文还讨论了光纤储频装置相位噪声对储频信号的影响,完成了对相位噪声的测量,并通过完善光纤储频装置来抑制系统内的相位噪声。
[Abstract]:Analog frequency storage technology can save the input radar signal completely by analog devices, and can reconstruct and modulate and forward it. Analog frequency storage equipment is an important part of some countermeasures because of its simple structure and large instantaneous bandwidth. Optical fiber delay line is widely used in analog frequency storage equipment because of its excellent characteristics. Fiber optic frequency storage technology has been developed rapidly. On the basis of analog frequency storage technology, the principle of optical fiber frequency storage is analyzed in detail. The constitution and technical specifications of feedforward and feedback fiber frequency storage devices are put forward, and several signal storage modes are compared. The effect of quasi-sample frequency storage on the signal is studied. Based on the analysis of the bandwidth and attenuation of multimode fiber and the performance of multimode coupler, the system structure of multi-signal processing using optical fiber frequency storage technology is obtained. In addition, the influence of the phase noise of the fiber optic frequency storage device on the frequency storage signal is discussed, the phase noise is measured, and the phase noise in the system is suppressed by perfecting the optical fiber frequency storage device.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN957.51

【参考文献】