matlabshuzhifenxi

dipum_images_ch03 matlab编程实例(dipum_images_ch03 matlab Programming Example)

一种典型的基于小波变换的图像融合算法实现程序，程序中各部分都有相应说明(A typical program based on wavelet transform image fusion algorithm, every part of the corresponding notes)

一本用于matlab最优化设计的电子书籍，对初学者有很大的帮助。(A used in matlab optimization design of electronic books, has a great help for beginners. )

create random points in 3d

说明：  利用物体的几何特征参数，和bp神经网络实现分类。(The use of the geometric characteristics of object parameters, and the realization of bp neural network classification.)

dc to dc buck boost converter with variable frequency

Convert image RGB to GIELAB

when SNR is high , 1st sample estimator provides good estimate of A. it has no noise effect . so we don’t need averaging effect to reduce noise when SNR is high. However variance is still low in sample mean estimator which shows that in reality ,sample mean is good estimator than 1st sample estimator. So, for high SNR, we do not need to reduce the effect of noise by averaging. or we can say that for high SNR let say >1000 , 1st sample estimator got reduced noise. But as for as variance is concerned , the sample mean has low variance for high SNR as well.

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. )

stationary reference frame model of induction motor