用于预测未知的数目 logisticmalthus

contrast stretching of an image without using inbuilt function

本程序是对V-BLAST系统及其检测算法的仿真，可采用BPSK,QPSK,16QAM,64QAM调制。检测算法为ML，MMSE,ZF,以及采用迫零的连续干扰消除检测算法。(This procedure is a V-BLAST system and its detection algorithm of the simulation, using BPSK, QPSK, 16QAM, 64QAM modulation. Detection algorithm for the ML, MMSE, ZF, and the introduction of zero-forcing successive interference cancellation detection algorithm.)

MATLAB的主要函数及其注释 可方便查找用(The main function of MATLAB and its notes can be easily used to find)

这是一个简单的3D光束图像的显示，用于描绘其射线传播过程(This is a simple 3D beam image used to describe the ray propagation)

说明：  2. 关于无线信道的多普勒谱，请回答以下问题： (1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请描述产生混叠的各种原因； (2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理； (3) 请用Simulink工具编写代码(S-Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请描述：自己用计算机产生的经典谱是正确的依据。(2. Regarding the doppler spectrum of the wireless channel, please answer the following questions: (1) in some wireless channels, doppler frequency shift will cause aliasing of the output signals of the wireless channel.Describe the various causes of aliasing; (2) there is a classic spectrum in the doppler spectrum in the wireless channel, please explain the mechanism of producing this spectrum shape; (3) please use Simulink tool to write code (s-function mode) to generate a single-path Rayleigh channel, whose doppler spectrum is the classical spectrum, in which the moving rate is 120km/h.And please describe: your own computer generated classical spectrum is the correct basis.)

ASPNET4ArcGISServer For Programers

说明：  实时解算单站或多基站伪卫星定位数据，并输出残差图，实现多种数据格式的读取。(Real time solution of single station or multi base station pseudo satellite positioning data, and output residual map, to achieve a variety of data format reading.)

实现地图符号的定制与开发 有一定的参考价值(achieve map symbol customization and the development of certain reference value)

说明：  线性相位 FIR 低通、高通、带通和带阻滤波器的设计方法，频率采样设计法的基本概念和线性相位的实现方法。几种线性相位的特点，熟悉和掌握矩形窗、三角形窗、汉宁窗、海明窗、布莱克曼窗、凯塞窗设计 IIR 数字滤波器的方法，频率抽样设计法的线性相位的设计方法，并对各种线性相位的频率抽样法的设计给出调整和改进。 利用 MATLAB 进行各类 FIR 数字滤波器的设计方法。(The design method of linear phase FIR low pass, high pass, band pass and band stop filter, the basic concept of frequency sampling design method and the realization method of linear phase. Familiar with and master the design methods of IIR digital filter of rectangle window, triangle window, Hanning window, Heming window, Blackman window and Kaiser window, and the design methods of linear phase of frequency sampling design method, and adjust and improve the design of frequency sampling method of various linear phases. Matlab is used to design all kinds of FIR digital filters.)

说明：  个人常用封装好的函数,npoi 、c# 、ae方面的(Often encapsulated functions)