ceemdan2

program to make motion estimation in matlab

NSGA2仿真实例，可用于神经网络仿真测试(NSGA is a popular non-domination based genetic algorithm for multi- objective optimization. It is a very effective algorithm but has been generally criticized for its computational complexity, lack of elitism and for choosing the optimal parameter value for sharing parameter. A modified version, NSGA- II was developed, which has a better sorting algorithm , incorporates elitism and no sharing parameter needs to be chosen a priori. NSGA-II is discussed in detail in this.)

在理想信道条件下、在高斯白噪声信道条件下和在先经过瑞利衰落信道再通过AWGN信道条件下的QPSK仿真（基带输入波形及其功率谱、QPSK调制信号及其功率谱、QPSK信号星座图、误码性能等）(In an ideal channel conditions, in white Gaussian noise channel conditions and earlier through Rayleigh fading channels through QPSK simulation AWGN channel conditions (baseband input waveform and its power spectrum, QPSK modulation signal and its power spectrum, QPSK signal constellation Figure, error performance, etc.))

fit_maxwell_pdf - Non Linear Least Squares fit of the maxwellian distribution. given the samples of the histogram of the samples, finds the distribution parameter that fits the histogram samples. fits data to the probability of the form: p(r) = sqrt(2/pi)*(a^(-3/2))*(r^2)*exp(-(r^2)/(2*a)) with parameter: a format: result = fit_maxwell_pdf( x,y,W,hAx ) input: y - vector, samples of the histogram to be fitted x - vector, position of the samples of the histogram (i.e. y = f(x,a)) W - matrix or scalar, a square weighting matrix of the size NxN where N = length(y), or 0 to indicate no weighting is needed. hAx - handle of an axis, on which the fitted distribution is plotted if h is given empty, a figure is created. output: result - structure with the fields a - fitted parameter VAR - variance of the estimation type- weighted LS or not weighted LS iter- number of iteration for the solution

根据矩阵中的高度数据，通过SAR点目标成像算法的逆过程，将高度数据转换为实际从飞机上采集的SAR原始数据，可以用于SAR成像仿真，SAR动目标检测等等(According to the height data in the matrix, the height data is converted into the SAR original data collected the aircraft by the inverse process of the SAR target imaging algorithm, which can be used for SAR imaging simulation, SAR moving target detection and so on.)

完整的遗传算法函数Matlab程序，供交流学习(The complete function of Matlab procedure genetic algorithm)

这是一个关于求周期序列的离散傅里叶变换的程序。(This is about the sequence of the cycle for the discrete Fourier transform program. )

升cosine窗加权的波束方向图：N=11(Raised cosine weighting function)

this file is gradient matlab code.

此文件包含了zoom-fft算法语言，结果与FFT对比图片输出(This file contains ZOOM-FFT algorithm language, the results are compared with FFT image output.)