| 滑动DFT算法在功率谱估计中的应用 |
| |
| 引用本文： | 陈晓峰,夏威.滑动DFT算法在功率谱估计中的应用[J].电子设计工程,2011,19(17):4-6,9. |
| |
| 作者姓名： | 陈晓峰 夏威 |
| |
| 作者单位： | 电子科技大学电子工程学院,四川成都,611731 |
| |
| 基金项目： | 中央高校基本科研业务费专项资金资助项目 |
| |
| 摘 要： | 基于滑动DFT算法推导出一种改进的周期图功率谱估计方法，并在软件系统界面中应用。根据传统的功率谱估计方法和滑动DFT算法推导出改进的功率谱估计算法，通过滑动D丌算法计算出DFY值，计算DFT时通过加窗减少了频谱泄漏．然后通过周期图法计算出最终的功率谱值，在Matlab中绘制出功率谱进行验证，用C＋＋语言对该算法进行实现...
|
| 关 键 词： | 滑动DFT FFT 加窗 周期图 C++类 |
Application of the sliding DFT algorithm in power spectrum estimation |
| |
| CHEN Xiao-feng,XIA Wei.Application of the sliding DFT algorithm in power spectrum estimation[J].Electronic Design Engineering,2011,19(17):4-6,9. |
| |
| Authors: | CHEN Xiao-feng XIA Wei |
| |
| Institution: | (School of Electronic Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China) |
| |
| Abstract: | An advanced periodogram method was proposed based on the sliding DFT algorithm, which was also applied in the interface of a software system. In this paper, an advanced periodogram method was deduced according to the conventional power spectrum estimation method and the sliding DFT algorithm, using the sliding DFT algorithm and by windowing in order to reduce the spectral leakage when calculating DFT, then calculated the power spectrum by using periodogram method, plotted in Matlab to verify, implemented this method with C＋＋, then imported the raw data and plotted the spectrum in the interface. The results indicated that periodogram method based on the sliding DFT algorithm required fewer sampling points and calculating works. After encapsulated, it can be applied to other modules. |
| |
| Keywords: | sliding DFT FFT windowing periodogram C＋＋ class |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
