c5_FilterData

active contours in matlab

说明：  《matlab6.0实用教程》，该书介绍了常用的MATLAB各种指令和功能(err)

是和网上的朋友共同一起研究，编写的，其中出现过好多的意见不一致， 并参考了大量的书籍和相关的资料。 经过多次调试(is online friends together, the preparation of which there a lot of disagreement, and a large number of reference books and relevant information. After repeated testing)

采用正交频分复用（OFDM）调制的跳频系统仿真模块，利用Simulink工具箱搭建。可更改跳频跳速,跳频频率数，载波频率，跳频间隔，FFT运算长度,循环前缀位数等相关参数。信道采用瑞利多径衰落信道和高斯信道，相关参数也可更改。希望有一定的参考价值，也希望站长开通我的下载功能，ID：gly201,非常感谢！(A simulation on Hopping Frequency communication system based on the OFDM technique.)

Procesamiento de imágenes filtro

kalman滤波的经典书记（kalman 秦永元），要求有一定数学基础(Kalman filter of the classic secretary, request has the certain mathematical foundation)

说明：  不同SNR时，AWGN信道下能量检测ROC曲线，横轴为Pf，纵轴为Pd.SNR分别是-5dB、-10dB、-15dB(ROC curve of energy detection)

LFM信号的分数傅里叶变换分析，包含LFM信号分数阶谱图产生及FrFt子程序，及峰值搜索。非常好(LFM signal s fractional Fourier transform, including the LFM signal generation and FrFt fractional spectrum of subroutines, and peak search. Very easy to use.)

this code describe extract feauter

DDS(快速正交调制）生成正弦波形，利用相位累加字进行累加，查找查找表内容输出正弦数据，在通信领域应用很多，我采用的是matlab的simulink进行前期仿真(DDS (fast quadrature modulation) to generate sine wave, the use of the word to accumulate phase accumulation, content output sine lookup table lookup data in many applications in the communications field, I used to pre simulink of matlab simulation)