ieee_tx11ac

求星图中星象坐标的matlab函数，输入星图，利用交叉投影方法得到星象所在区域的四个顶点坐标和星象的质心，能够快速的求得星图星象的位置信息(Astrology chart for stars matlab function of the coordinates, enter the star maps, cross-projection method using astrology region and the four vertex coordinates of the mass center of astrology, the Express can find the location of star maps astrology information)

实验一 双极性矩形随机信号的归一化功率谱密度一 1.1 功率谱密度简介 平稳过程的任何一个非零样本函数的持续时间为无限长，显然都不满足绝对可积和总能量有限的条件。因此，它的傅里叶变换不存在即没有频谱函数。所以我们用功率谱密度来表述其频谱特性。 随机过程的任一实现是一个确定的功率型信号。而对于任意的确定功率信号f(t)，它的功率谱密度为： 式中， 是f(t)的截短函数 对应的频谱函数。f(t)是平稳随机过程 的一个实现。而随机过程某一个实现的功率谱密度不能作为过程的功率谱密度。过程的功率谱密度应该看作是任一实现的功率谱密度的统计平均，即 虽然该式给出了平稳随机过程的功率谱密度，但我们通常都不利用这个式子来计算功率谱。我们知道，确知的非周期功率信号的自相关函数与功率谱密度是一对傅里叶变换。对于平稳随机过程，也有类似的关系，即 和 对于平稳随机过程我们通常先求出其自相关函数再利用上式求出其功率谱密度。 1.2 实验要求  1.了解平稳随机信号功率谱的概念及计算方法  2.仿真不同占空比，等概、非等概双极性矩形随机信号的归一化功率谱密度  3.分析不同信号所包含的频谱分量，有无直流分量和定时分量信息 (A pair of rectangular random experiment polarity signal sample return a nonzero function of any duration power spectral density of a 1.1 power spectral density of a stationary process Introduction of infinite length, apparently not satisfied absolutely integrable and the total energy of the limited conditions. Therefore, it is the Fourier transform of the spectrum that does not function does not exist. Therefore, we use the power spectral density to express their spectral characteristics. Any random process is a realization of a certain type signal power. For arbitrarily determined power signal f (t), its power spectral density is: wherein, is f (t) is a function corresponding to the truncated spectrum function. f (t) is a stationary random process of realization. The random process to achieve a certain power spectral density can not serve as the power spectral density of the process. Power spectral density process should be seen as a statistical average power spectral density of any r)

脉宽调制（PWM）波形图的仿真模型，用于谐波的分析，可用于逆变器的控制策略研究(Pulse width modulation (PWM) waveform simulation model for harmonic analysis, can be used for inverter control strategy research)

对信号进行Choi-Williams分布分析的matlab函数(The matlab function of Choi-Williams distribution analysis )

搭建ofdm系统中的bfsk的主函数程序(Ofdm system bfsk build the main function of program)

模式识别：线性分类器，fisher线性判别 female和male中分别为训练集 test1和test2为测试集(fisher)

matlab example code 工具包(matlab example code toolkit)

北航张志涌的《精通MATLAB7.0》，很详细的介绍了MATLAB的基本命令以及用法，以及SIMULINK的使用方法(Northern Zhang Yong " Mastering MATLAB7.0" , a very detailed introduction to the basic MATLAB commands and usage, and the use of SIMULINK)

KAVERAGE例程必看看KAVERAGE例程必看看(KAVERAGE routine will definitely take a look to see if KAVERAGE routine)

Returns matrix (n)x(n) which in which there are just prime numbers and on the other places, there are zeros.