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a_d_1.rar
- (一)基本任务:单频正弦波模拟信号的简单数字化。即对一个单频正弦波模拟信号进行抽样、均匀量化、PCM二进制自然编码。 1、主要步骤和要求: (1)单频正弦波模拟信号的抽样实现。要求输入信号的幅度A、频率F和相位P可变;要求仿真时间从0到2/F,抽样频率为Fs=20F;要求给出抽样信号samp的波形图。 (2)单频正弦波模拟信号均匀量化的实现。要求对抽样信号sampl归一化后再进行均匀量化;要求量化电平数D可变;要求输出信号为平顶正弦波;要求给出量化输出信号quant的波形图,并与抽样信号s
sscyd.rar
- 二阶数字谐振器的频率特性和滤波器的幅频特性和相位特性和预畸变在双线性变换中的作用,Second-order digital resonator frequency filter characteristics and amplitude-frequency characteristics and phase characteristics and pre-distortion in the bilinear transform the role of
FFTmeasuereFandP
- 在LabVIEW下搭建子VI,利用FFT算法,测量频率和相位。-Under the sub-structures in the LabVIEW VI, using FFT algorithm, measuring frequency and phase.
dds
- 输出波形频率调整问题; 波形精度问题; 滤波问题; 多种指标输出(电压、电流、功率、相位); 自身优点(任意波形发生器)。 -Output waveform of the frequency of adjustment problems waveform accuracy issues filtering problem a variety of indicators of output (voltage, current, power, phase) its own
4.1.2
- 正弦余弦波形发生器,可以设置调节频率、幅度、相位、衰减、直流偏置等参数来产生相应波形。-Cosine Sine Waveform Generator, you can adjust the frequency settings, amplitude, phase, attenuation, such as DC bias to produce the corresponding waveform parameters.
Virtual_Oscilloscope
- 采用MFC实现的虚拟示波器界面,类似于常见的数字示波器显示面板; 可显示方波、正弦波及三角波三种波形不同参数的信号波形 对于方波可设置方波周期、占空比、幅度等参数; 对于正弦波可设置频率、幅度、相位参数; 对于三角波可设置周期、幅度参数; 三种波形可以同时存在,且所有波形均会随时间动态移动-MFC using the achievement of the virtual oscilloscope interface, similar to common digital osc
Digital_modulation_FCN
- 数字信号调制中的幅度调制、频率调制、相位调制等例程。-Digital signal modulation of the amplitude modulation, frequency modulation, phase modulation, such as routines.
exa070501
- 详细完善的滤波器设计程序,先设计一个单带滤波器;由单带滤波器得到半带滤波器,零相位半带滤波器的频率特性,,其虚部应为零,实际上是滤波器的“增益”-filter design
singen
- 产生任意的正炫波信号。输入任何参数可以是任意幅度,相位,和频率。-Generate any sine-wave. You can specify any amplitude, frequency and phase.
STFT_serial
- 短时傅利叶转换或短时傅利叶变换(英文:short-time Fourier transform, STFT,又称short-term Fourier transform)是和傅利叶转换相关的一种数学转换关系,用以决定时变讯号其局部段落之弦波成份的频率与相位。 -Short-time Fourier transform or short-term Fourier transform (in English: short-time Fourier transform, STFT, also kn
colorDopplerimaging
- 对于彩色超声成像中的幅值和相位的提取中,考虑到中心频率会随着深度下移的现象,对其下移程度进行了研究。-For color Doppler imaging in the amplitude and phase extraction, taking into account the depth of the center frequency will be down with the phenomenon, the extent of its downward studied.
dds
- 块DDS芯片中主要包括频率控制寄存器、高速相位累加器和正弦计算器三个部分(如Q2220)。频率控制寄存器可以串行或并行的方式装载并寄存用户输入的频率控制码;而相位累加器根据dds频率控制码在每个时钟周期内进行相位累加,得到一个相位值;正弦计算器则对该相位值计算数字化正弦波幅度(芯片一般通过查表得到)。DDS芯片输出的一般是数字化的正弦波,因此还需经过高速D/A转换器和低通滤波器才能得到一个可用的模拟频率信号。 -In the programming step, the electronic
6.5
- 产生正弦波VI的前面板和程序框图 信号幅度 初始相位 采样频率 采样点数等参数由前面板上的输入空间设置-Produce sine wave VI the front panel of and program diagram initial phase signal amplitude parameters such as sampling frequency points sampled by former panel input space Settings
Virtual-Signal-Generator
- 虚拟函数信号发生器。可产生锯齿波、方波、正弦波。正弦波幅值、相位、频率可调。方波频率、占空比可调。-Virtual Function Signal Generator
zishiying
- 用C语言编写自适应算法,将自适应算法应用与判断两路信号的相位频率等信息的一致性-Adaptive algorithm written in the C language, the consistency of the adaptive algorithm application and to determine the phase of the two signals frequency information
freRecovery
- 用于根据线性调频,相位编码等信号的时域波形计算相应的瞬时频率和自相关函数(The corresponding instantaneous frequency and autocorrelation function are calculated according to the time domain waveform of linear frequency modulation, phase encoding and other signals)
低频函数信号发生器
- (1)设计并制作一个具有高频率稳定度和高相位稳定度的低频函数发生器,频率可调,为1HZ-1KHz; (2)波形种类:三角波、正弦波、方波、锯齿波((1) a low frequency function generator with high frequency stability and high phase stability is designed and produced, and the frequency is adjustable for 1HZ-1KHz. (2) the t
apfft
- 全相位FFT变换,适用于对不同频率波形进行频谱分析(All phase FFT transform is suitable for spectrum analysis for different frequency waveforms)
Allan_Variance
- allan 方差(阿伦方差)是David AIlan于1966年提出的,最初该方法是用于分析振荡器的相位和频率不稳定性,高稳定度振荡器的频率稳定度的时域表征目前均采用Allan方差。由于陀螺等惯性传感器本身也具有振荡器的特征,因此该方法随后被广泛应用于各种惯性传感器的随机误差辨识中。(Allan variance (Allen variance) was proposed by David Allan in 1966. Initially this method was used to anal
pg831
- 双向PCS控制仿真,光纤陀螺输出误差的allan方差分析,可以得到很精确的幅值、频率、相位估计。( Two-way PCS control simulation, allan FOG output error variance analysis, You can get a very accurate amplitude, frequency, phase estimation.)