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- But as for the non-stationary signal, this tool is not useful because it is a fully time domain or fully frequency domain transform, it cannot provide the frequency information at any local time segment. 但对非平稳信号来说,这种工具就显得力不从心。 因为它是一种全频域、全时域的变换,它将信号从时域变换到了频域,在频域的定位性是完全准确的(即频域分辨率最高),但其在时域却无任何分辨能力,不能提供任何局部时间段上的频率信息。
- An effective depth to time domain transforming method is presented to improve normal sample method. 提出了一种有效的对常规采样方法改进的深时转换方法。
- frequency and time domain transformation 频-时域转换
- time domain transform 时域变换
- The GSC is the most popular method in time domain. 宽带旁瓣对消器是最常用的一种时域宽带波束形成方法。
- Codes which are mutually orthogonal in time domain. 同一个组内的码在时域上相互正交。
- When time domain solutions are required, the Laplace transform method is straightforward. 当需要时域解时,拉氏变换方法也是很直接的。
- Hilbert-Huang Transform (HHT) is proposed here to analyze the physical measurements in time domain. 在此处,提出利用一个希尔伯特-黄转换(HHT)来分析此时域上的物理测量数据。
- From the time domain, it maybe is the last one thermal event age. 从“时域”看 ,可能是岩石所在环境发生的最后一次“热”事件 (如强烈地震 )的年代
- RMS, reactive power and active power are calculated most efficiently and most accurately using wavelet transform in time domain. 用小波变换可在时间域高效准确地求电压电流有效值、有功和无功。
- This paper describes a new method which uses IDFT (Inverse Discrete Fourier Transform) technique to do time domain near field measurement for antenna. 本文提出了一种利用离散付立叶反变换(IDFT)技术完成天线的时域近场测量的方法.
- In the system,fast Fourier transform and multichannel signal time domain waveform,amplitude spectrum and cross-power spectrum is plotted and displayed. 该系统实现了快速傅里叶变换,多通道时域波形,幅值谱,互功率谱的绘制与显示。
- In order to extract the part information of Fourier transform, Gabor introduced Gaussian function as window function of localized time domain. 为了提取Fourier变换的局部信息,Gabor引入了Gaussian函数作为时域局部化的窗函数,在Gabor变换的基础上发展起来的短时Fourier变换(又称加窗Fourier变换)中的窗函数并不局限于Gaussian函数,这在一定程度上保证了计算的有效性和实现的便捷性。
- Meanwhile, data of complete time domain waveform is needed in order to calculate accurate S-parameters of frequency domain via fast Fourier transform (FFT). 而要通过快速傅立叶变换(FFT)获得准确的频域参数,又必须得到完整的时域波形数据。
- From which z's domain to the domain transform their own preparation, instead of MATLAB system BUTTERWORTH system function (for graduate design students more useful! 这是一个基于MATLAB编写的BUTTERWORTH滤波器的程序.;其中从s域到z域的变换是自己编写的;代替了MATLAB中的系统BUTTERWORTH的系统函数(对于毕业设计的学生;比较有用!!
- The motion equation of the structure is in both time domain and Laplace domain. 在时间域和拉氏域内建立了它的动力学方程.
- This system mainly adopts the TDR (Time Domain Reflectometry) method. 是我国地质灾害监测预报的发展趋势。
- Time domain simulation results validate the effectiveness of the designed SSDC. 时域仿真也验证了所设计的SSDC的有效性。
- Using the transform relation connecting time domain and frequency domain and the constitutive relation,the differential equations of double negative material(DNM) is obtained. 由双负介质的本构关系出发,利用时频转换关系,推导出了描述双负介质中电磁场与电磁流的微分方程组。
- Synthesizer of Electro-Optical Birefringent System in Time Domain[J]. 引用该论文 王吉明;刘立人;刘德安;赵栋.