计算短时傅里叶变换 stft_lfm

图像的纹理提取，有一系列的matlab函数，可以取得很好的效果(Image texture extraction, has a series of matlab function, can be achieved very good results)

SCATTERFIELD - Interactive nearfield viewer Syntax: scatterfield Description: SCATTERFIELD plot the fields/currents/charges within the antenna resonator or on its surface at plane wave incidence. SHOULD be executed after EIGENFREQ. Only an incident plane wave is allowed as an excitation. MATLAB Antenna Toolbox Draft 05, Antenna Lab, ECE, WPI, mat05@ece.wpi.edu Authors: S. Kulkarni, A. Marut, S. Makarov

this code is about hough transform

双闭环可逆直流调速（H桥） 波形很稳定 适合用于学习(Reversible double-loop DC speed (H-bridge) is very stable waveform suitable for learning)

OFDM系统中，归一化频偏频偏和误码率的关系曲线(OFDM systems, frequency offset and bit error rate curve)

计算单个球型粒子的的粒子光强分布，对比不同折射率条件下粒子的光强分布(A particle for calculating a single spherical particle of light intensity distribution)

计算房间冲击响应的matlab函数，亲测可用，界面操作(Matlab code for calculating the pulse response of a room, and the interface operation is available.)

分布傅里叶计算孤子程序，单孤子以及多孤子相互作用均可用次程序(soliton programe)

说明：  本文给出两个最典型分形集—Julia 集和Mandelbrot 集的matlab源程序，并对分析了它们的性质和变化规律。(In this paper, the two most typical fractal sets-Julia sets and Mandelbrot Sets matlab source, and an analysis of their nature and variation.)

matlab编写的轨道坐标系变换程序 地心直角坐标系与轨道参数互换(Matlab prepare the track coordinates transform procedures geocentric Cartesian coordinate system with the orbital parameters swap)