| 基于混合卷积窗和双窗法的FFT算法研究 |
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| 引用本文： | 张文宇,陈士杨,陈海洲,陈紫蝶,张晶.基于混合卷积窗和双窗法的FFT算法研究[J].电脑与信息技术,2021,29(1):35-38. |
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| 作者姓名： | 张文宇 陈士杨 陈海洲 陈紫蝶 张晶 |
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| 作者单位： | 湖北工业大学理学院,湖北武汉 430068;湖北工业大学理学院,湖北武汉 430068;湖北工业大学理学院,湖北武汉 430068;湖北工业大学理学院,湖北武汉 430068;湖北工业大学理学院,湖北武汉 430068 |
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| 摘 要： | FFT算法是信号处理中一个不可或缺的部分,也是其中需要改进的部分.设计一个精度优良的FFT算法有助于推进频谱分析的实用化进程.针对FFT改进算法的实现需求,文章采用了C语言结构设计了一个任意点数的FFT算法,分析了混合卷积窗的频谱特性,并总结了任意窗函数的幅值恢复方法.最终通过构建混合卷积窗和双窗法结合的处理方法有效提...
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| 关 键 词： | 快速傅里叶变换(FFT) 混合卷积窗 幅值恢复 双窗法 |
Research on FFT Based on Xixed Convolution Window and Double Window Method |
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| ZHANG Wen-yu,CHEN Shi-yang,CHEN Hai-zhou,CHEN Zi-die,ZHANG Jing.Research on FFT Based on Xixed Convolution Window and Double Window Method[J].Computer and Information Technology,2021,29(1):35-38. |
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| Authors: | ZHANG Wen-yu CHEN Shi-yang CHEN Hai-zhou CHEN Zi-die ZHANG Jing |
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| Affiliation: | (School of Science,Hubei University of Technology,Wuhan 430068,China) |
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| Abstract: | FFT is an indispensable part of signal processing,and also needs to be improved.Design-ing a good FFT algorithm is helpful to advance the practical process of spectrum analysis.To meet the requirement of FFT improved algorithm,this paper uses C language structure to design an FFT with arbitrary points,analyzes the spectrum characteristics of mixed convolution window,and sum-marizes the amplitude recovery method of arbitrary window function.Finally,the FFT algorithm is effectively improved by constructing the combination of mixed convolution window and double-window method.The simulation results show that the FFT algorithm based on the combination of mixed convolution window and double-window method has higher accuracy than the common FFT,mixed convolution window and double-window method. |
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| Keywords: | FFT(fast Fourier transform) mixed convolution window amplitude recovery double-window method |
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