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Description: 1．步进频率信号的压缩实验。编写Matlab程序，得到类似如下两图的结果。步进频率信号参数：（1）载频f0 = 5.321GHz, N=21（子脉冲的个数）, F = 20MHz （频率步进值）, 合成带宽B = 400MHz，（2）载频f0 = 5.321GHz, N=81（子脉冲的个数）, F = 5MHz（频率步进值） , 合成带宽B = 400MHz。目标参数：四个分别位于995，1000，1001和1005米处, 其反射系数为1, 1.5, 2.25, 3.375(Compression experiment of stepped frequency signal)
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Size: 63488 |
Author: 小狐鱼
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Description: 一、 计算图象的频谱函数
设计图象120*30/256*256；选用Matlab函数直接调用实现。
二、根据计算证明傅立叶变换的性质
1， 共轭对称性:
F(u,v)=F*(-u,-v) ;
三、图象的频域滤波
1， 设计一个指数低通滤波器，对两图象（f1(x,y)为30*30/256*256的图象；f2(x,y)=p3-02图象）进行低通滤波，观察分析空域图象和频谱分布的变化。
四、图象变换比较
利用现有的离散傅立叶变换、离散余弦变换、Walsh-Hadamard变换对同一图象实施变换，比较三种变换所得到的频谱。(1. The spectral function of the computed image
Design image: 120*30/256* 256; Use Matlab function to call the implementation directly.
The properties of Fourier transform are proved by calculation
1. Conjugate symmetry:
F (u, v) = F * (- u, v);
3. Frequency domain filtering of images
1. Design an exponential low-pass filter with two images (f1 (x,y) as 30*30/256* 256. F2 (x,y)=p3-02 image) to conduct low pass filtering to observe the change of spatial image and spectral distribution.
4. Comparison of image transformation
Using the existing discrete Fourier transform, discrete cosine transform and Walsh-Hadamard transform to transform the same image, compare the spectrum obtained by three kinds of transformations.)
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Size: 185344 |
Author: LIMBO2K
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Description: 用MATLAB实现最短路径问题，F算法和D算法，已调通(Using MATLAB to achieve the shortest path problem, D algorithm, has been tuned)
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Size: 1024 |
Author: 左左加油
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Description: 逐步回归的基本思想是将变量逐个引入模型，每引入一个解释变量后都要进行F检验，并对已经选入的解释变量逐个进行t检验，当原来引入的解释变量由于后面解释变量的引入变得不再显著时，则将其删除。以确保每次引入新的变量之前回归方程中只包含显著性变量。这是一个反复的过程，直到既没有显著的解释变量选入回归方程，也没有不显著的解释变量从回归方程中剔除为止。以保证最后所得到的解释变量集是最优的。本文件结合实例利用MATLAB实现逐步回归的过程。(The basic idea of gradual regression is to introduce the variables one by one into the model. Each time an explanatory variable is introduced, the F-test must be carried out. The explanatory variables that have been selected must be t-checked one by one. When the original explanatory variable is introduced due to the following explanatory variables When it is no longer significant, delete it. To ensure that only the significant variables are included in the regression equation before each new variable is introduced. This is an iterative process until neither significant explanatory variables are included in the regression equation nor are insignificant explanatory variables excluded from the regression equation. In order to ensure that the final set of explanatory variables is optimal. This document combined with examples using MATLAB to achieve gradual regression process.)
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Size: 9216 |
Author: 0yu0 |
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Description: 凤飞飞2018美国大学生数学建模竞赛中国赛区安徽师范大学义井(word happy juty jieba kettle group F data Android fashion matlab data)
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Size: 14030848 |
Author: 至善 |
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Description: These files are matlab source code for price forecasting for smart meter hourly data. Step 1 relevant features are selected by Gray Correlation, Random Forest, Relief F algorithms. Then Kernel PCA of features are calculated. Price is predicted by Kernel SVM.
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Size: 61308928 |
Author: sanaMujeeb |
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Description: matlab中进行时频分析的s变换程序，内附有例子(for analize of t/f in matlab with demo)
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Size: 339968 |
Author: athur |
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Description: matlab 程序 实现对文字的识别，对字母f做了验证了(The matlab program implements the recognition of the text and validates the letter F.)
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Size: 500736 |
Author: 稳如狗和人 |
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Description: CEC2017前几名的MATLAB算法实现
有EBOwithCMAR; jSO; LSHADE_SPACMA; LSHADE-cnEpSin
各种参数都可以调整，包括种群数量、F因子、变异率、交叉率等(The realization of MATLAB algorithm for the top few of cec217.
There are ebowithcmar; JSO; lshade_spacma; lshade cnepsin.
Various parameters can be adjusted, including population number, F factor, mutation rate, crossover rate, etc.)
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Size: 25936896 |
Author: GHao |
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Description: 搭建 BPSK+编码+交织仿真通信链路，仿真分析在不同信道条件下的不同译
码算法的误比特率性能。基于 matlab，搭建 BPSK+卷积编码+交织通信收发链路，
仿真参数如下： 1) 信源比特速率： 100 b R kbps = 2) 卷积编码：码率为 1/2，生成多项式为（561,753） 3) 译码方式：维特比译码（硬判决译码、软判决译码（8 比特量化）） 4) 交织：行列交织，交织器深度为 100bit，宽度为 10； 5) 仿真点数：106 1. 在 AWGN 信道下，仿真并绘出该系统在硬判决和软判决（3bit 量化）两
种译码方式下的信源误比特率曲线，并进行分析。 2. 设定某种交织器结构，在单径瑞利衰落信道（ 100 d f Hz = ）下，采用理 想信道估计，仿真并绘出该系统在有无交织、不同译码方式（硬判决和 软判决）时，在不同 0 b EN下的信源误比特率曲线，并进行分析。 3. 改变交织器结构，选择三种不同的交织深度（自行决定），在单径瑞利衰 落信道（ 100 d f Hz = ）下，仿真并绘出该系统在不同交织长度时，在不 同 0 b EN下的信源误比特率曲线，并进行分析。(Build a BPSK + encoding + interleaving simulation communication link, and analyze the different translations under different channel conditions
The bit error rate performance of the code algorithm. Based on MATLAB, BPSK + convolutional coding + interleaved communication transceiver link is built,
The simulation parameters are as follows: 1) source bit rate: 100 b r Kbps = 2))
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Size: 1024 |
Author: 弹玻璃球 |
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