| 基于MATLAB复调制ZOOM-FFT算法的分析和实现 |
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| 引用本文： | 王力,张冰,徐伟.基于MATLAB复调制ZOOM-FFT算法的分析和实现[J].舰船电子工程,2006,26(4):119-121. |
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| 作者姓名： | 王力 张冰 徐伟 |
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| 作者单位： | 1. 江苏科技大学,镇江,212003
2. 船舶系统工程部,北京,100036 |
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| 摘 要： | 频谱细化技术近年来发展迅速，常见方法有：基于复调制的Zoom-FFT法、Chirp-Z变换、Yip-Zoom变换等。从分析精度、计算效率、分辨率、灵活性等方面来看，基于复调制的Zoom-FFT方法是一项行之有效的方法，因而也得到了比较广泛的应用。在介绍复调制Zoom-FFT算法基本原理的基础上，用Matlab实现该算法，并通过仿真进行验证，表明该算法简明、易实现。最后讨论算法的运算量和局限性。
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| 关 键 词： | 信号处理 复调制 ZOOM—FFT 频率分辨率 细化 频谱 |
| 收稿时间： | 2005-11-28 |
| 修稿时间： | 2005-12-26 |
Analysis and Realization of Complex Modulation ZOOM- FFT Based on MATLAB |
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| Wang Li,Zhang Bing,Xu Wei.Analysis and Realization of Complex Modulation ZOOM- FFT Based on MATLAB[J].Ship Electronic Engineering,2006,26(4):119-121. |
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| Authors: | Wang Li Zhang Bing Xu Wei |
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| Institution: | 1.Jiangsu University of Science and Technology,Zhenjiang 212003;2. Systems Engineering Research Institute, Beijing 100036 |
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| Abstract: | The technology of analyzing local magnitude-frequency of signal has been developed rapidly in recently few years,which including complex modulation ZOOM-FFT(ZFFT),CZT,Yip-Zoom Transform.As in the aspects of precision,efficiency,resolving power and agility,ZFFT is an effective method to analyze local magnitude-frequency of signal,and it has been applied widely.In this paper,the base principle of ZFFT has been introduced.Based on this,we realized the arithmetic under MATLAB environment and validated it through simulation.The result shows that ZFFT is simple and feasible.And the arithmetic's complexity and disadvantage is also discussed in this paper. |
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| Keywords: | signal processing complex modulation ZOOM - FFT frequency resolution zoom spectrum |
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