DE405_2_Matlab_data

消除实验图像中的背景噪声，噪声为随机或高斯噪声(Eliminating background emissions)

The code and methods of image processing based on matlab

PN SEQUENCE WORKING AND CHECKING ITS PROPERTIES

能作为所有金融分析提供一目了然的效果，结合了移动平均和转势信号(Can serve as a glance of all financial analysis of the effect of a combination of moving average and the transfer potential signal)

Abstract：Thearticleismainlydevotedtothetheoryaswellastheachievementonthemodulationanddemodulationofπ/ 4-DQPSKsysteminthesoftwareSystemView.Besides，thearticleanalysesthedynamicandstatic behaviorsoftheπ/4-DQPSKsystemaswellastheperformanceagainstnoiseundertheconditionofGaussnoise channel.Thecomparisonismadeonthespectrumandanti-noiseperformancebetweenπ/4-DQPSKandQPSK underthethesamechannel.Theresultofsimulationshowsthatthespectrumexpandingofπ/4-DQPSKissuperiortothatoftheQPSKsystem. Keywords：π/4-DQPSK；SystemView；computeraideddesign（CAD）；Matlab(Abstract: Thearticleismainlydevotedtothetheoryaswellastheachievementonthemodulationanddemodulationof pi/4-DQPSKsysteminthesoftwareSystemView.Besides, thearticleanalysesthedynamicandstatic behaviorsofthe pi /4-DQPSKsystemaswellastheperformanceagainstnoiseundertheconditionofGaussnoise channel.Thecomparisonismadeonthespectrumandanti-noiseperformancebetween pi /4-DQPSKandQPSK underthethesamechannel.Theresultofsimulationshowsthatthespectrumexpandingof pi /4-DQPSKissuperiortothatoftheQPSKsystem. Keywords: Pi /4-DQPSK; SystemView; Computeraideddesign (CAD); Matlab)

适用于雷达方面学习的初学者熟悉相关参数设置了解相关线性调频信号离散化，匹配滤波的产生方法等一系列基本问题。比较时域和频域不通滤波方法的区别(Beginners apply to radar aspects of learning to understand familiar with the parameters related to the chirp signal discrete, matched filtering to produce a series of basic questions like. Comparison of time domain and frequency domain filtering method fails difference)

关于无线信道的多普勒谱 无线信道中的多普勒谱有一种经典谱请解释产生这种谱形状的机理；(1. On the radio channel of the Doppler spectrum (2) wireless channel Doppler spectrum has a classic spectrum (classic spectrum), please explain such a spectral shape of the mechanism )

自编的非线性牛顿算法，经IEEE14、30、39节点系统验证，是正确的(Nonlinear Newton algorithm includes the IEEE14 node system verification, 30, 39, is correct)

QAM调制软比特解调，能够更准确进行解调。(Soft bit QAM modulation and demodulation, can be more accurately demodulated.)

High pass and low pass filters with matlab by using bode plot method. Showing very important thing is that bode plot does not give any information about transient response.