时间有限持续信号和重建方法

Interpolation of a funtion supported on an interval from its discrete samples

本文研究有限持续时间信号由其离散采样重建的频域方法,即通过有限区间上信号的均匀采样的DFT以及DCT的加窗,给出信号频谱的近似估计,提出了两种新的加窗方法,并给出一些仿真结果。

In the paper, we discuss the relation between the Fourier transform of a function on an interval and the DFT of its discrete samples, and present two new windows from which can derive two methods for the interpolation of a function on an interval. Several numerical experiments verified the results.