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esprit.rar
- 用esprit算法估计复正弦加白噪声的信号频率,f给出正弦信号的频率估计值,Esprit algorithm with an estimated increase in complex white noise sinusoidal signal frequency, f the frequency of sinusoidal signal given the estimated value of
main
- 传统的宽带信号中抑制正弦干扰的方法是采用陷波器(notch filter),为此我们需要精确知道干扰正弦的频率.然而当干扰正弦频率是缓慢变化时,且选频率特性要求十分尖锐时,则最好采用自适应噪声抵消的方法.用一个二阶FIR的LMS自适应滤波器消除正弦干扰的一个方案。 -Wideband signals in the traditional sinusoidal interference suppression method is to use a notch filter (notch fil
example10
- :正弦波发生器例程,包括了直接数字频率合成(DDS)的原理以及如何应用CPLD产生频率可控频率的正弦信号。-: Sine wave generator routine, including a direct digital synthesizer (DDS), as well as the application of the principle of frequency control CPLD generated sinusoidal signal frequency.
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
Detectionreceiver
- 本设计采用AT89S52为控制核心,以DDS芯片AD9850产生频率可以自动可调的正弦扫频信号,实现了全频范围和特定范围内自动搜索和手动搜索,并且鉴别外来信号的调制方式:调频、调幅、等幅。通过单片机自动显示外来信号频率并存储,达到侦察接收机的性能要求。-AT89S52 the design for the control of the core, have a DDS chip AD9850 automatically adjustable frequency swept sine signal
design
- 产生不同频率、不同幅度的两种正弦波信号 对两个信号进行叠加并做频谱分析 还原原来两个信号(LPF)-Produce different frequency, the two sine wave signals of different magnitudes of the two signals are superimposed and do spectral analysis to restore the original two signals (LPF)
systems_and_siganls
- 几个正弦信号叠加,在做频谱分析,设计滤波器得到某一个频率的正弦信号-Superposition of several sinusoidal signals, spectral analysis in the design of a filter to a frequency of sinusoidal signal
lvbohou
- 正弦信号,单个频率的正弦信号,频率为1KHz,幅度为5-Sinusoidal signal, a single frequency sinusoidal signal, a frequency of 1KHz, the range of 5
dqtransform
- 对频率、幅值可变的正弦信号进行dq变换的Matlab仿真-Variable-amplitude variable- frequency sinusoidal signals dq transformation
6.8
- 函数发生器程序框图 设定信号频率5Hz 信号幅度1V,采样频率1000Hz 采样点数1000,选择生成正弦波-Basic Function Generator
music_single_sin
- 白噪声中单个正弦信号的频率检测与估计 产生,其中是一高斯白噪声,其均值为0,方差为1。用MUSIC方法估计观测数据中正弦波的频率,并给出白噪声方差()un2uσ 与复正弦波的振幅A的估计值。-A single frequency detection and estimation of the sinusoidal signal in white noise, which is a Gaussian white noise with mean 0 and variance 1. MUSIC m
aa
- 用matlab对正弦信号进行不同采样频率的采样分析,并画出图形;matlab卷积源程序-The sampling and analysis of the sinusoidal signals of different sampling frequencies
DPLL_REASERCH
- 本课题研制了一种宽频带的数字锁相放大器,可以完成自动增益和相位 可调整,最长积分时间为100s,适合于频率从10Hz到10kHz,幅值从100nV 到10mV的微弱正弦信号检测。测量结果表明,当采样点数N大于8192时, -This project developed a wideband digital lock-in amplifier, can be completed automatically adjustable gain and phase, the longes
glrt
- 广义似然比函数,对未知正弦信号的幅度、频率、时间延迟、相位进行估计-Generalized likelihood ratio function of the unknown sinusoidal signal amplitude, frequency, time delay, phase estimation
lab4_timer
- 设计和实现一个数字振荡器,采样频率为40kHz,输出正弦信号的频率为2kHz-Design and implementation of a digital oscillator, the sampling frequency is 40kHz, the output signal frequency of 2kHz sine
DSPII_USTC_01
- 传统的宽带信号中抑制正弦干扰的方法是采用陷波器(notch filter),为此需要精确知道干扰正弦的频率.然而当干扰正弦频率是缓慢变化时,且选频率特性要求十分尖锐时,则最好采用自适应噪声抵消的方法.下图是用一个二阶FIR的LMS自适应滤波器消除正弦干扰的一个方案。该代码实现了以下功能: 1) 借助MATLAB画出了滤波器的误差性能曲面和误差性能曲面的等值曲线; 2) 给出了最陡下降法以及LMS算法的计算公式; 3) 用MATLAB产生了方差为0.05, 均值为0白噪音S(n),并
FFT
- 1.用Matlab产生正弦波,矩形波,以及白噪声信号,并显示各自时域波形图 2.进行FFT变换,显示各自频谱图,其中采样率,频率、数据长度自选 3.做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱 4.用IFFT傅立叶反变换恢复信号,并显示恢复的正弦信号时域波形图-1. Produce sine wave, square wave, and the white noise signal with Matlab, and their time-domain waveform
power-spectrum-estimation
- 分别使用MVDR、Root-Music和ESPRIT三种方法对信号频率估计进行仿真实验,其中噪声为复正弦加性白噪声,给出正弦信号频率的估计值。-Using MVDR, Root- Music and ESPRIT three methods to estimate the signal frequency simulation experiment respectively, which is suitable for complex sinusoidal additive white nois
curvefit
- 正弦信号的频率,相位,幅度等参数的最小二乘法拟合(sine signal parameters fitting)
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