[关键词]
[摘要]
分析了时变幅度线性调频信号参数估计的一般方法,提出了将分数阶傅里叶变换用于时变幅度线性调频信号的参数估计,并对相关问题进行了较为深入的研究。研究了时变幅度线性调频信号初始相位,初始角频率、调频率及幅度信息提取与估计的方法,并以幅度随高斯函数而变化以及幅度随机变化的线性调频信号为对象对参数估计性能(参数估计的均方误差)作了传真分析。
[Key word]
[Abstract]
The detection and parameter estimation of the time-varying amplitude chirp signals is focused in this dissertation, the detection method using the Fractional Fourier Transform(FRFT) was studied theoretically and the simulating analysis about the properties of the detect method is provided.
[中图分类号]
TN911.23
[基金项目]
国家自然科学基金资助项目(60472044)