greatness of magnitude 学习怎么用 词组短语 amplitude modulation (AM)幅度调制;振幅调制 amplitude modulation (am)幅度调制;振幅调制 amplitude modulation调幅;波幅调制 vibration amplitude振动振幅;振动强度 amplitude spectrum振幅谱;振幅频谱 signal amplitude信号幅度;信号振幅 ...
1)amplitude spectrum幅值谱 1.From the definition of DFT,calculation method of amplitude spectrum for digital signal is derived in this paper.根据离散傅里叶变换DFT的定义,推导出数字信号幅值谱的解析计算方法,并通过C++Builder开发工具设计了一套测试程序,对数字合成信号进行了幅值谱的计算仿真,仿真结果验证了...
Width of the frequency spectrum for strong fluctuations of the amplitude of a wave in a turbulent atmosphereIn the present communication the results of [1] are used to perform a theoretical analysis of the behavior of the frequency spectra of amplitude-logari thm fluctuations in the same ...
A model for the shape of the Fourier amplitude spectrum at high frequencies At high frequencies f the spectrum of S-wave accelerations is characterized by a trend of exponential decay, e^(蟺kf). In our study, the spectral decay parameter k shows little variation at a single station for ...
From these above equations (4) and (5), we can prepare the frequency spectrum of AM wave as shown in the below figure. This contains the full carrier and both the sidebands. Hence, it is also called Double Sideband Full Carrier (DSBFC) system. ...
The spectrum of such a signal is clearly infinite in extent since it contains spectral components of frequency 0, fr, 2fr,…, nfr. If the repetition frequency and the shape of the pulses remain constant, the HF wave modulated by this signal is of the form V(t)=δAcos ωt[1+2∑n...
内容提示: 1 Abstract—Amplitude-modulated (AM) leaky-wave antenna (LWA), a concept following amplitude modulation technique from classical communications theory, is a promising structure that enables transforming traveling wave into the radiating wave. In this paper, we provide a different ...
The presence of any given harmonic in the spectrum of a particular musical instrument depends on the nature of thevibratingsystem. For example, if the system functions acoustically as an open tube or a vibrating string, all harmonics will likely be present in the wave. Examples of this are th...
The joint-transform power spectrum of two identical objects can be represented as a one-dimensional sinusoidal grating modulated by a Fourier transform, an... A Tanone,CM Uang,FTS Yu,... - 《Applied Optics》 被引量: 108发表: 1992年 IN-VIVO INFORMATION EXTRACTING SYSTEM, TAG DEVICE USED FO...