SAR_sp_Imaging

阵列信号处理的程序 包括很多种常用算法 如music esprit capon 算法等 非常实用(Array signal processing program includes a variety of commonly used algorithms, such as music esprit capon algorithm is very practical)

THIS FOLDER CONTAINS THE MATLAB PROGRAMS FOR CHAPTER 3 OF RADAR SYSTEMS BY MAHAFZA

说明：  Matlab验证码识别算法实现，详细见代码实现，要搭建Matlab环境(Matlab verification code identification algorithm, see the code implementation in detail, to build Matlab environment)

matlab implementation of CORDIC sin part

说明：  免疫遗传算法，实现群体优化的功能哦，matlab程序，其他的看参考了！(Immune genetic algorithm, to optimize the function of groups realize Oh, matlab procedures, look into the other!)

FIR带通滤波器的设计程序，参数见程序内容(FIR band-pass filter design, process parameters, see)

一种聚类分析算法，实现盲源分离前的盲源数估计。(A cluster analysis algorithm, the number of blind source before blind source separation estimates.)

传统的短时谱估计语音增强算法通常假设语音谱分量相互独立，没有考虑语音谱分量间的相关性。针对这 一问题，该文提出一种新的基于多元Laplace分布模型的短时谱估计算法。首先，假设语音的离散余弦变换(DCT) 系数服从多元Laplace分布，以此利用谱分量间的相关性；在此基础上，利用多元随机矢量的高斯尺度混合模型表 示，推导得到语音DCT系数矢量的最小均方误差(MMSE)估计的解析表达式；并进一步推导了基于该分布模型的 语音存在概率，对最小均方误差估计子进行修正。实验结果表明，该算法在抑制背景噪声和减少语音失真等方面优 于传统的语音增强方法。(The spectral components of speech are usually assumed to be independent in traditional short-time spectrum estimation, which is not the case in practice. Tosolve this problem, a new speech enhancement algorithm with multivariate Laplace speech model is proposed in this paper. Firstly, the speech Discrete Cosine Transform (DCT) coefficients are modeled by a multivariate Laplace distribution, so the correlations between speech spectral components can be exploited. And then a Minimum-Mean-Square-Error (MMSE) estimator based on the proposed model is derived using a Gaussian scale mixture representation of random vectors. Furthermore, the speech presence uncertainty with the new model is derived to modify the MMSE estimator. Experimental results show that the developed method has better noise suppression performance and lower speech distortion compared to the traditional speech enhancement method. )

说明：  对信号进行EMD分解后画出信号的希尔伯特包络谱程序，自己编写的，调试成功(EMD decomposition of the signal after the draw of the Hilbert envelope of the signal spectrum of procedures, I have written, debugging success)

激光雷达点云las 读取程序 可以用来读取las文件(The reading program)