| 1. | In addition , the emphasis of the thesis is the use of fast fourier transform ( fft ) in reactive power compensation
研究的另一个重点是快速傅立叶变换在无功补偿中的应用。 |
| 2. | In addition , based on fast fourier transform ( fft ) , an effective and reliable carrier frequency detection method has also been designed in this thesis
此外，论文还设计了一种有效可靠的基于fft的载波频率测量方法。 |
| 3. | The concepts of filtering and sampling power system voltage and current signals for harmonic analysis using the fast fourier transform ( fft ) algorithm by a digital signal processor are introduced
软件算法方面，系统采用传统的快速付立叶变换( fft ) ，对采集的电压和电流信号进行频谱分析。 |
| 4. | But the computing amount of dft is so large that its practical use is restricted , especially real - time processing . in fact , we use fast fourier transform ( fft ) in practical engineering
但庞大的运算量使得dft的实际应用，特别是实时处理难以实现，所以实际工程中用到的都是快速傅里叶变换( fft ) 。 |
| 5. | Related techniques and their applications are briefly reviewed in this paper , the conventional cross - correlation algorithm and the cross - correlation algorithm based on fast fourier transform ( fft ) are discussed
本文简要地回顾了piv技术的一些典型算法和应用，研究了基本互相关算法和基于快速傅立叶变换的互相关算法。 |
| 6. | In chapter 3 , the paper presents the theory of wigner - ville distribution ( wvd ) , pseudo wvd , smoothed pseudo wvd , discrete fourier transform ( dft ) , fast fourier transforms ( fft ) , and also expatiates on the
第三章将对wvd 、 pwvd 、 spwvd分布、 dft和fft变换的理论进行说明,并阐述跳频解跳与数字中频接收机的解跳原理。 |
| 7. | Three methods of digital signal processing algorithm are proposed to restrain the noise discussed , there are methods of fast fourier transform ( fft ) , of moving self - correlation , and of least means
这样,就可以在周期性和相关性上,区分这两类信号,并消除干扰。在此基础上,在数字信号处理方面,本文提出了三种算法用于抑制上述干扰。 |
| 8. | This paper introduced the work principle for testing wood elastic modulus with fast fourier transform ( fft ) and the structures of the machine and test technical process , this machine can test fast and accurate
摘要介绍了快速傅立叶变换( fft )技术敲击板材检测弹性模量数控检测设备的工作原理及组成，并在此基础上描述了检测板材的工艺过程，说明该检测设备具有准确快速等特点。 |
| 9. | The time - domain scattering is computed via fdtd method , which is particularly well adapted to frequency - dependent soil . this method is processed prior to a fast fourier transform ( fft ) , which is performed to come back to the frequency domain
主要包括用于有耗土壤和树干计算的频率相关fdtd算法- ( fd ) ~ 2td ，以及吸收土壤凋落波的gpml吸收边界，确立了树干散射的时域算法模型。 |
| 10. | The subregion with pure dielectric layers is analyzed by mol and the fast fourier transform ( fft ) is introduced to reduce the computing time , while the subregion with conductors is analyzed by fdfd to take advantage fully the superiorities of these two methods
通过在纯介质区域使用直线法，导体所在区域使用有限差分法分别进行求解，充分发挥两种方法各自的优越性。由于在纯介质区域中使用了直线法求解，因此该算法具有计算时间与介质层厚度无关的突出优越性。 |
