iriscode

汉明码编码仿真程序，在Matlab环境下仿真，适用于初学者。(Hamming code encoding simulation program, in the Matlab simulation environment for beginners.)

Similarity_Measure Image similarity measure [sm_SSD , sm_SAD , sm_NCC ] = Similarity_Measure(im1, im2, c1, c2, w) INDEX: Similarity_Measure.m Similarity_SSD.m Similarity_SAD.m Similarity_NCC.m

GPS码捕获，跟踪代码算法的仿真，这是基于GPS的仿真推导(GPS code acquisition, tracking algorithm simulation code, which is derived based on GPS simulation)

说明：  matlab实现模糊神经网的仿真，输出误差等曲线(matlab fuzzy simulation, neural networks, such as the output of the error curve)

说明：  在神经网络中，用四阶统计量的方法对图像进行特征提取(In the neural network, using fourth-order statistics of the image feature extraction method)

二维情况下用ＦＤＴＤ方法模拟电磁波的传播情况，加入了理想匹配层，用Ｃ和MATLAB混合编程，信号源是高斯脉冲(Two-dimensional case with the FDTD simulation of electromagnetic wave propagation, no additional absorbing boundary condition, mixed with the C and MATLAB programming, the signal source is a Gaussian pulse)

CPN网络，即对向传播网络，是将Kohonen特征映射网络与Grossberg基本竞争网络相结合，发挥各自特长的一种新型特征映射网络。(CPN network, the right to communication networks, Kohonen feature is the mapping of network and basic Grossberg competing networks combined play to their strong points of a new feature mapping network.)

MATLAB实现快速正交变换，与传统的FFT算法相比拥有更高的分辨率，但是运算时间较大， 在目标检测、频率分析、降噪方面都有着广泛的应用(MATLAB to achieved FOS_convert, compared with the traditional FFT algorithm has a higher resolution, but the computation time is large, the target detection, frequency analysis, noise reduction have a wide range of applications)

说明：  本文利用模糊理论中的高斯隶属 度函数来获得模糊观测下具有概率特性的似然函数，并且由此似然函数得到每个传感器提供信息的可信度；再将各传感器的可 信度转化成基本概率赋值函数即mass 函数；最后利用证据理论对多传感器信息进行融合。对目标识别的仿真试验表明该方法获 得的结果比直接结果具有更高的精度和可靠性。(The method uses fuzzy theory in the Gaussian fuzzy membership function to obtain a probable characteristic under observation likelihood function，and the resulting likelihood function gets the credibility of the information provided by the sensors.Then the reliability of each sensor is changed to a mass function.Finally，multi-sensor information is combined by using evidence theory.Simulation of target recognition shows that the results obtained have higher accuracy and reliability.)

BER-SNR curve of M-QAM modulator in AWGN channel