摘要
针对连续信号的采样与重构问题,利用MATLAB仿真软件平台,仿真不同条件下连续信号的采样信号时域波形和采样后信号频谱、重构信号时域波形和重构后误差波形图。通过对采样周期对采样频谱叠加和信号重构精度的影响、以及信号被采样前后在频域的变化对比分析,得出在不同采样频率的条件下,对应采样信号的时域、频域特性以及重构信号与误差信号也随之产生变化,连续信号可以完全恢复过来。
To address the issue of continuous signal sampling and reconstruction, the continuous signal’ s sampling signal time domain waveform and signal spectrum after sampling, the reconstruction signal time domain waveform and the error waveform after reconstruction are simulated under different conditions using the MATLAB simulation software platform. Through an analysis on the influence of sampling period on the sampling spectral overlay and signal reconstruction accuracy,and through a comparison between the signals before and after sampling in frequency domain, it is concluded that under different sampling frequencies, the corresponding sampling signal’s time domain,frequency domain characteristics,and the reconstruction signal and the error signal also vary,and the continuous signal can be completely recovered.
出处
《无线电工程》
2015年第6期35-37,共3页
Radio Engineering
基金
甘肃工业职业技术学院项目(Gzy2011-27)
关键词
MATLAB
信号采样
频谱叠加
信号重构
MATLAB
MATLAB
signal sampling
spectrum overlay
signal reconstruction
