单通带可调谐微波光子希尔伯特变换技术及其在信号处理中的应用

项目名称： 单通带可调谐微波光子希尔伯特变换技术及其在信号处理中的应用

项目编号： No.61501422

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 王辉

作者单位： 中国科学院半导体研究所

项目金额： 19万元

中文摘要： 希尔伯特变换在信号分析与处理中有着十分重要的应用，它约束着系统传递函数实部和虚部之间或者幅度和相位之间的相互关系。本项目针对目前无有效方法实现宽带可调带通微波希尔伯特变换系统的问题，以基于相移光纤光栅的可调单通带微波光子滤波系统的幅频、相频响应为研究对象，通过分析光信号的偏振处理与平方律检波下色散引入的积分变换效应，研究宽谱光源的光谱相移与对应微波通带相移之间的转换机理，探索光谱谱宽、色散效应、偏振失调等参数对产生带通微波希尔伯特变换输出响应的影响，预期最终建立具有单通带可调谐特性的微波希尔伯特变换系统。该系统具有通带可调谐、频响无周期性的特点，在多信道微波通信传输环境下对信道选择与通带分析有着重要意义。并利用该系统对任意典型带通信号进行带通希尔伯特变换，与仿真数据对比，验证系统的有效性。从而为这一新型微波信号处理技术在电子对抗、ROF通信和精密测量等领域的拓展应用提供必要的科学依据.

中文关键词： 微波光子信号；希尔伯特变换器；微波光子滤波器；单通带滤波器

英文摘要： Hilbert transform has a very important role in signal analysis and processing applications, it constraints the relationship between the real and imaginary parts or the magnitude and phase response of the system transfer function. This project aims to build up a broadband tunable bandpass microwave Hilbert transformer system based on PS-FBG phase shift combined single-pass filtering effect of tunable microwave photonic band filter system.By analyzing the light polarization effects processing and integral transformation under the square-law detection with signal dispersion induced by the DCF, researchers will investigate the conversion mechanism between the phase shift of broad spectrum light source and the corresponding phase shift of the microwave band-pass transformer,besides we will also explore the characteristics between the spectral width of the spectrum , dispersion effects, polarization disorder parameters which will affect the output response of this microwave Hilbert transform systems. The technology has passband tunable frequency response with non-cyclical characteristics,which is meaningful in the multi-channel microwave communications transmission environment for channel selection and pass-band analysis. Furthermore, we will demonstrates the system effectivity by comparing the simulation and experimental results,which is very important for this new microwave signal processing technology to be applied in the field of electronic warfare, ROF and other communications, and precision measurement.

英文关键词： micorwave photonic signal processing;Hilbert transfomer;microwave photonic filter;single-passband filter