stc_qpsk

基于波前重构算法的sar雷达点目标成像实现，使用matlab实现(Wave-front reconstruction algorithm to achieve sar radar point target imaging)

In this paper, we show how support vector machine (SVM) can be employed as a powerful tool for $k$-nearest neighbor (kNN) classifier. A novel multi-class dimensionality reduction approach, Discriminant Analysis via Support Vectors (SVDA), is introduced by using the SVM. The kernel mapping idea is used to derive the non-linear version, Kernel Discriminant via Support Vectors (SVKD). In SVDA, only support vectors are involved to obtain the transformation matrix. Thus, the computational complexity can be greatly reduced for kernel based feature extraction. Experiments carried out on several standard databases show a clear improvement on LDA-based recognition

说明：  matlab在数字信号处理中对音频信号的处理(matlab in digital signal processing audio signal processing)

声纹识别，能够对说话人的声音进行识别，过程包括语音输入、预处理、特征提取、建立模型和匹配。(speaker Recognition)

PID控制器，比较简单，可以作为matlab的GUI界面的教学使用。(PID controller.It is relatively simple, and can be used as the teaching tool of the Matlab GUI interface.)

一些经典的Matlab模型，适合新手参考用。(Matlab model for a number of classic, suitable for novice reference.)

A simple PSNR calculator that might be handy in measuring the PSNR between two frames in a video. Typically used in measuring the distortion when videos are encoded and decoded.

Laplace金字塔算法的图像处理Matlab程序，希望对大家有帮助(Laplace pyramid algorithm for image processing Matlab program, we want to help)

matlab tutorial for dealing with files

Matlab经典50题，从简单入手，对新手有很大的帮助。(Matlab classic 50 questions, ranging from simple start, there is a great help to the novice.)