contrast_stretching

该程序实现了雷达信号下降沿的检测不用知道雷达脉冲信号的结束时间信噪比不可以太小(The program achieved a falling edge detection of radar signals do not know the time of the radar pulse signal the end of the signal to noise ratio can not be too small)

it is cluster4 matlab code

说明：  一个基于矢量变换下的异步电机调速系统matlab源码，对初学电机矢量变换的的有帮助(Transformation of a vector-based induction motor speed control system source code matlab for beginners motor vector of the help)

天线方向图用于画简单的天线方向图，适合初学者学习使用，(the antenna dir)

本程序是一个基于matlab的雷达SAR成像自聚焦算法，对于学习雷达信号处理的人有帮助。(This procedure is a matlab-based imaging radar SAR Autofocus Algorithm for the study of radar signal processing has to help people.)

经典法，布莱克曼-图基法求谱估计，简单实用(Classical method, Blackman- map-based spectrum estimation method, simple and practical)

说明：  对原有修正PRI变换进行改进，将分散在真实PRI箱附近几个箱中的到达时间差值累加起来，提高检测性能(PRI transform the original amendment to improve, will be scattered around a few boxes in the real PRI box add up to the arrival time difference and improve the detection performance)

matlab中读取excel表格的重要途径(an important way to read excel spreadsheet matlab)

说明：  有源滤波器（APF）matlab_simulink仿真图的子图之一。算法是DQ0 算法。(active filter (APF) matlab_simulink simulation map one of the graph. The algorithm is DQ0 algorithm.)

MATLAB编程实现语音信号的时域特征提取，如分帧、过零率、短时能量、语谱图等(Speech signal feature extraction)