NMSE

tpdf是计算学生t分布概率密度的函数，在金融数值模拟中有广泛应用。(tpdf is calculated Student' s t-distribution probability density function, there are widely used in the numerical simulation of finance.)

2D Fourier变换在光衍射方面的应用一例,对孔函数直接应用FFT2,得到衍射结果；以及FDTD方面的两个不成熟的程序(2D Fourier Transform-ray diffraction case of the application of direct application Kong FFT2 function, be diffraction; FDTD and the two immature procedures)

in this file wrote digital modulation function for about all digital modulation

卡尔曼滤波的实质是由量测值重构系统的状态向量。(Essence of the Kalman filter is measured by the value of reconfigurable system state vector.)

用Matlab处理GPS导航卫星观测数据的程序，也就是O文件，Rinex 2.11版本，代码仅200多行，且包含大量注释，于2017.12.2日调试通过，可顺利读取体积达10M+的O文件，读取的数据准确无误。函数调用格式： [APXYZ DeltaHEN signal_type obsdata] = read_obs(‘krgg3340.17o’)(Using Matlab to process GPS navigation satellite observation data program, that is, O file, Rinex 2.11 version, the code is only more than 200 rows, and contains a lot of annotations. It debugged on 2017.12.2 day. It can smoothly read the O file with volume up to 10M+, and the data read is accurate.)

一个报童从报刊发行中心订报后零售，每卖一份报纸可赚钱a元；若报纸卖不出去，则退回发行处，每退一份要赔钱b元。每天报童卖出的份数是随机的，但报童可以根据以往卖报情况统计得到每天卖k份报纸的概率密度p(k)。 （1） 求报童每天期望收益达到最大（或损失达到最小）的定报量z。 （2） 改变参数a/b的值，观察订报量的最优值变化，画出变化曲线。 试画出仿真流程图，进行程序实现，并对仿真结果进行分析。 (A newsboy subscribe from the press after the retail distribution centers, each sale of a newspaper can make money a million if newspapers can not be sold, then returned to Issue Department, each retire to a loss of a b element. Newsboy sold shares in a day is random, but the newsboy can sell based on past statistics reported to be selling daily newspaper k the probability density p (k). (1) seeking newsboy expected profit per day to maximize (or minimize loss) reported that the volume of fixed-z. (2) change the parameters a/b values, subscribe to observe changes in the volume of the optimal value, draw curve. Simulation test to draw a flow chart for program realization, and simulation results for analysis.)

这是一个求解集合覆盖问题的众所周知的贪婪算法，其中有些部分做了修改(The well known greedy algorithm for solving Set Cover problem, with a few changes )

说明：  matlab 工具箱，非常好用，对于有这方面需求的朋友，不错的选择。(matlab toolbox, very easy to use, has in this regard for the needs of friends, good choice.)

做机器人路径规划或者避障的同学，该文档有很高的参考性。(The document has a high reference to the students who do robot path planning or obstacle avoidance.)

MATLAB的教程，彩色页面，简单易懂，是大家学习MATLAB的好教材。(MATLAB tutorial, simple, easy to understand)