74hanming

基于DGTD方法的高效天线建模与仿真研究(Leap-frog discontinuous Galerkin timedomain method)

说明：  FreeModbus_Slave-Master-RTT-STM32-master V1.6

DRM 外辐射源雷达的杂波抑制算法代码，LMS RLS ECA 有问题。(The code of clutter suppression algorithm for DRM external emitter radar has some problems with LMS RLS ECA.)

OFDM调制解调系统的设计，内涵matlab simulink的模型和误码率监测的M文件，改OFDM调制解调系统模型可以适应于matlab较低版本，可执行。(OFDM modulation and demodulation system design, the connotation Matlab Simulink model M-file and bit error rate monitoring, change the OFDM modulation and demodulation system model can be adapted to a lower version of the executable in matlab. )

使用matlab实现设计IIR滤波器：冲激不变法、双线性变换法 设计一个巴特沃思低通滤波器，其技术指标为：3dB带宽为，阻带截止频率为，阻带衰减大于30dB，采样间隔T=10us。 1）用冲激响应不变法 2）用双线性变换法设计 3）用FIR的矩形窗函数设计 二、用双线性变换法分别设计低通、高通、带通、带阻四种滤波器。模拟滤波器带原型分别为切比雪夫滤波器和椭圆滤波器，采样率Fs=20kHz，指标如下： 1）低通：通带0～4 kHz，阻带5 kHz，通带衰减Rp=0.5dB，阻带衰减As=10dB。 2）高通：阻带0～4 kHz，通带5 kHz，通带衰减Rp=0.5dB，阻带衰减As=10dB。 3）带通：通带2kHz～4 kHz，阻带0～1.5 kHz，4.5kHz以上，通带衰减Rp=0.5dB，阻带衰减As=10dB。 4）带阻：阻带2kHz～4 kHz，通带0～1.5 kHz，4.5kHz以上，通带衰减Rp=0.5dB，阻带衰减As=10dB。(Using MATLAB to implement the design of IIR filters: impulse invariant and bilinear transformation)

说明：  MathType需要与其他文档编辑工具搭配使用，并且能够与office系列软件完美兼容，可用在编辑数学试卷、书籍、报刊、论文、幻灯演示等方面，是编辑数学资料的得力工具，所以受到了广大用户的一致好评。并且office系列本就内置有MathType的缩减版，这让用户们更加易于上手。(MathType needs to be used with other document editing tools, and can be perfectly compatible with office series software. It can be used in editing math papers, books, newspapers, papers, slide shows, etc. it is a powerful tool for editing math materials, so it has been unanimously praised by the majority of users. And the office series has a reduced version of MathType built in, which makes it easier for users to get started.)

西门子通讯软件prodave测试程序，可直接高速读取s7300,200 系列plc数据，比opc方式实时性强很多(Siemens Communication Software prodave test program, high-speed read directly s7300, 200 series plc data, real-time than the way a lot stronger opc)

盲源分离在通信侦查中的应用，适用于通信侦查的盲源分离解决方案。很不错的文章(Application of blind source separation in the Investigation of the communication, for communication investigation blind source separation solutions. Very good article)

In this paper the various technologies available so far for wireless transmission of electricity and the need for a Wireless System of Energy Transmission is being discussed to find its possibility in actual practices, their advantages, disadvantages and economical consideration.

说明：  适应多个模式的rs编码，Verilog，选择对应的多项式(RS coding adapted to multiple modes.)