16QAM

SIGNAL PROCESSING IN MATLAB

matlab环境下实现局部均值分解（LMD）(matlab environment to achieve local mean decomposition (LMD) )

the code file that is uploded is harmfreq file

核密度估计的parzen窗法，简单易用，适合于初学非参数估计的用户。(Kernel Density Estimation parzen window method, easy to use, suitable for novice non-parametric estimation of the user.)

分析了影响多雷达组网对目标跟踪精度的因素以及与单雷达的差异,提出了定义雷达网目 标定位精度,以及评估多雷达组网后在目标定位精度方面带来增益的方法。推导了雷达网对目标定 位精度和相应评估指标的估计公式。该文方法不要大量的计算机仿真就可以方便地评估2-D、3- D以及混合雷达网的目标定位精度和效能。通过应用实例说明了该文方法的优点和有效性。 (The factors that affect the location accuracy of target tracked by multi-radar are analyzed.The method to define target location accuracy and the metrics to evaluate the accuracy improvement efficiency of a radar net- work are presented.The analytical expressions are developed to estimate the target location accuracy and the effi- ciency metricsof a radar network.The presented method is convenient to evaluate the target location accuracy and the efficiency of 2-D,3-D as well as the heterogeneous radar network instead of the tedious computer simula- tions.The advantages and the validity of the method are demonstrated by an application. )

说明：  读取文件并导入工作环境的程序(Read the file and import procedures for the working environment)

This code is used to cut selected part of the image that is of course after you decompress.   And run the code in the image circle separated.

A filter bank structure that can deal effectively with piecewise smooth images with smooth contours, was proposed by Minh N Do and Martin Vetterli. The resulting image expansion is a directional multiresolution analysis framework composed of contour segments, and thus is named contourlet. This will overcome the challenges of wavelet and curvelet transform. Contourlet transform is a double filter bank structure. It is implemented by the pyramidal directional filter bank (PDFB) which decomposes images into directional subbands at multiple scales. In terms of structure the contourlet transform is a cascade of a Laplacian Pyramid and a directional filter bank. In essence, it first use a wavelet-like transform for edge detection, and then a local directional transform for contour segment detection. The contourlet transform provides a sparse representation for two-dimensional piecewise smooth signals that resemble images.

学习阵列初阶和晋级高阶的好书,希望对大家有所帮助!(Introduction to learning and promotion of high-end array of books, and they hope to be helpful to everyone!)

用Matlab观察分岔与混沌现象。利用迭代格式，做出相应的Feigenbaum图(Using Matlab to observe the phenomenon of bifurcation and chaos, the use of iterative scheme, corresponding to the Feigenbaum map)