butterworth

用MATLAB程序打开数字地震数据记录SAC格式。(using Matlab, it can open the data of seismic wave.)

M=8,fc=6/T时的8个波形，和M=4的PSK通信系统的Monte Carlo仿真(M = 8, fc = 6/T at the time of 8 waveforms, and M = 4 of PSK communication systems Monte Carlo simulation)

说明：  一个比较简单易懂的颜色直方图量化及转换的程序，适用于目标跟踪等领域，希望可以帮助有需要的人。(A relatively easy to understand and change the color histogram quantization procedures for tracking and other fields, hoping to help those in need.)

简单的阵列仿真，适用于初学者。大家可以参考一下。(Simple array simulation for beginner. We can refer to.)

function S = steeringv(M,x) define steering vector free space wavelength of 15cm at resonant freq of 2GHz lamda = 0.15 d = lamda/2 inter-element spacing K = 1:M x is DOA of the received signal S = exp((-2*pi*j*(K-1)*d*sin(x))/lamda)

Codes presented here are helpful in MATLAB mathematical transformations

Cuckoo search (CS) is an optimization algorithm developed by Xin-she Yang and Suash Deb in 2009.[1][2] It was inspired by the obligate brood parasitism of some cuckoo species by laying their eggs in the nests of other host birds (of other species). Some host birds can engage direct conflict with the intruding cuckoos. For example, if a host bird discovers the eggs are not their own, it will either throw these alien eggs away or simply abandon its nest and build a new nest elsewhere. Some cuckoo species such as the New World brood-parasitic Tapera have evolved in such a way that female parasitic cuckoos are often very specialized in the mimicry in colors and pattern of the eggs of a few chosen host species [3]

SAR 点目标仿真经典 适合初学者学习合成孔径雷达(SAR point target)

to plot the region using contourlet transform.it is given to the image.rmin r max are given as input parameter

matlab循环谱分析工具箱，其中包含cyclic_4th_order_cumulant，cyclic_autocorrelation_fast等函数(cyclic spectral analysis toolbox )