搜索资源列表
signal
- 基于matlab中功率谱分析，上传一段噪声文件，用其做出各个数字特征，相关函数分析-Matlab in power spectrum analysis, document upload while noise characteristics to make the individual numbers, the correlation function
cor_ls
- 把辨识分成两步进行：第一步：利用相关分析法获得对象的非参数模型（脉冲响应或相关函数）；第二步：利用最小二乘法、辅助变量法或增广最小二乘法等，进一步求的对象的参数模型。如果模型噪声与输入无关，则Cor-ls相关最小二乘法（二步法）可以得到较好的辨识结果。Cor-ls相关最小二乘法（二步法）实质上是先对数据进行一次相关分析，滤除了有色噪声的影响，再利用最小二乘法必然就会改善辨识结果。能适应较宽广的噪声范围，计算量不大，初始值对辨识结果影响较小。但要求输入信号与噪声不相关-The identifica
Process
- Signal subspace identification is a crucial first step in many hyperspectral processing algorithms such as target detection, change detection, classification, and unmixing. The identification of this subspace enables a correct dimensionality reductio
matlab
- 根据伪随机序列理论，由混合同余法产生均匀分布的随机数，进而根据中心极限定理来产生高斯噪声。 分析所产生的均匀分布和高斯分布随机信号的均值、方差、自相关等数字特征，估计其概率密度函数并进行分析，估计其功率谱密度并进行分析。说明该高斯噪声是否符合白噪声特性。 对该高斯噪声进行FIR低通滤波，估计输出低通型限带白噪声的功率谱、相关时间等，并结合白噪声通过线性系统相关理论来进行分析。 -According to the theory of pseudo-random sequence, a
PBP
- 用 LDPC 解码法，对原始信号通道的噪声进行评估，消去。具体原理可参照IEEE TCOM的论文。-Channel Noise Estimation or correlation estimation for distributed source coding Using Particle based Belief Propagation for LDPC decoding in AWGN and BSC models. This code is partially based on our
shangchuan
- 实现仿真信号的胡相关处理降噪，可以实现被白噪声污染的信号中有用信号的提取，并进行了fft变换，可以清晰的看清信号的频谱-Hu correlation processing to achieve the simulated signal noise, white noise contaminated signal in the extraction of the useful signal can be achieved, and fft transform, you can clearly se
zitiaoxie
- 在自适应噪声对消中的，周期信号和噪声信号的分离，利用了噪声延时后的非相关性。-In the adaptive noise canceller, the periodic signal and the noise signal separation, the use of the noise delayed non-correlation.
duojingyanshi
- 源信号加多径延时和噪声的仿真，还有其相关性分析，很有用的。-Source signal and multipath delay and noise simulation, and the correlation analysis, very useful
random_work
- 文件可以用来产生正态白噪声序列x(k) ，计算X(k)的均值，均方值，方差，相关函数-The file can be used to produce normal white noise sequence x (k), calculate the mean value of X (k), the mean square value, variance, correlation function
colornoise
- 阵列信号处理中色噪声的程序分析与相关系数-Array signal processing in colored noise program analysis and correlation coefficients
mxu
- 直接序列扩频Matlab程序 直接序列扩频通信可以有效地抵抗来自信道中的窄带干扰。在一个直扩通信系统中,扩频是通过伪噪声序列(PN)对发送的信息数据进行调制来实现 的。在接收端,原伪噪声序列和所收信号的相关运算可将窄带干扰扩展到DS信号的整个频带,使干扰等效为幅度较低频谱较平坦的噪声；同时，将DS信号解扩, 恢复原始信息数据-Direct Sequence Spread Spectrum Matlab program direct sequence spread spectrum comm
sinusbruit
- this a program that is useful to represent a sinusoidal signal and add two sinus using a white noise, then the convolution and correlation in representing the gaits is applied.-this is a program that is useful to represent a sinusoidal signal and add
stbcall.m
- tgrr yggg ggg yttt Space time block coding (STBC) and beamforming techniques are two emerging technologies that can be employed at base station with multiple antenna to provide transmit diversity and beamforming gain to increase signal-to-
sc3
- 通过观察图像lena_noise.bmp可以看到，该图像主要包含高斯噪声、椒盐噪声等。 通过查阅资料可知，维纳滤波可以很好的滤除高斯噪声，而中值滤波对于椒盐噪声的滤出效果优异，因此本次采用维纳+中值的滤波方式进行图像的去噪处理。 图像常用评价方法有：信噪比、相关系数、清晰度。信噪比较为常用；相关系数 由于滤波会使原图像失去某些细节，因此这种评价方式为参考性指标而非绝对评判标准；清晰度 为图像子块的方差 综合考虑采用图像的峰值信噪比(PSNR)作为评价去噪效果指标(自编PSNR.
Signal_Processing
- 1.产生正弦信号，方波信号，均匀噪声； 2.信号的叠加； 3.信号的相关分析； 4.信号的卷积； 5.信号的和； 6.信号的频谱图。-1. Generate sine signal, square wave signals, uniform noise 2. Signal superposition 3. The signal correlation analysis 4. The convolution of signal 5. The sum of
plane-rotation
- Advanced correlation filter synthesis algorithms to achieve rotation invariance are described. We use a specified form for the filter as the rotation invariance constraint and derive a general closed-form solution for a multiclass rotation-invariant
ceshi
- 以实际所测随机中子脉冲数据的自相关函数为研究对象，借助仿真实验，开展Elman神经网络对不同浓度核材料进行识别的研究。在实测数据的基础上，通过叠加随机噪声，模拟产生了不同浓度核材料的相关函数样本用于神经网络的训练与测试，实验结果表明，-Calculating the stochastic neutron pulse autocorrelation function with the actually measured data as the research object, we carry o
code-capture-of-dsss-system
- 本文主要利用matlab编程工具对直接序列扩频通信的捕获过程进行仿真。仿真主要基于滑动相关法的有关理论,先讨论扩频仿真中起着重要作用的m序列的生成问题,尔后讨论调制信号的产生,然后在信号的捕获中分步讨论,先对捕获的流程进行简单的仿真,再依次加入噪声和多普勒频移后进行捕获仿真-In this paper, using matlab programming tools for direct sequence spread spectrum communication capture process
progream
- Gaussian noise refers to its obey gaussian probability density function (i.e., normal distribution) of the noise. If a noise, its amplitude distribution obeys the gaussian distribution, and its power spectral density is uniformly distributed, has des
ASD
- 所谓高斯噪声是指它的概率密度函数服从高斯分布（即正态分布）的一类噪声。如果一个噪声，它的幅度分布服从高斯分布，而它的功率谱密度又是均匀分布的，则称它为高斯白噪声。高斯白噪声的二阶矩不相关，一阶矩为常数，是指先后信号在时间上的相关性。高斯白噪声包括热噪声和散粒噪声。-Gaussian noise refers to its obey gaussian probability density function (i.e., normal distribution) of the noise. If