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antenna lab and simmulations. free space model. propagation. lobes: primary, sec. definition
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CHARACTERISTICS OF UWB ANTENNAAND WAVE PROPAGATION
This paper proposes an omni-directional UWB
antenna pattern in azimuth cut, low voltage standing wave
ratio (VSWR), and easy to construct antenna for ultra
wideband (UWB) systems. The desi
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For free space path loss, fc=1.5GHz (Carrier frequency)
If we take different antenna gains such as 1.(Gt=1,Gr=1)and 2.(Gt=1,Gr=0.5)and 3.(Gt=0.5,Gr=0.5)
When we reduce the antenna gains (i.e. the transmitting gain or the receiving gain) there is
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雷达技术是在1987年前后开始应用于储油罐液位测量的。在此之前,它主要用于航海远洋油轮的液位测量,而与用于油罐的测量则有一定差别。从那时起,雷达测量仪器被广泛应用,从测量简单、清洁的产品到粘性产品和污染性产品,如沥青、焦油和未经加工的蜡等。其测量过程是,先建立一个稳固的测量参考点,然后测量雷达波从天线到液面的往返传播时间,从而确定它们之间的确切距离,再根据测量参考点的位置,就能推算出精确的液面位置。 更多还原
-Radar technology in 1987, used in oil ta
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EM Wave propagation and antenna analysis m-files:
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用于无线通信系统天线与电波传播、信道建模中空时编码的分析。-Antenna for wireless communication systems and radio wave propagation channel modeling hollow coding analysis.
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This paper deals with the modeling of the statistical distribution of the effective gain of terminals. This incorporates
both the characteristics of the antenna’s radiation pattern in the situation of use, and the characteristics of the local
pro
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Okumura analyzed path-loss characteristics based on a large amount of experimental data collected around Tokyo, Japan. He selected propagation path conditions and obtained the average path-loss curves under flat urban areas. Then he applied several c
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波达方向（Direction Of Arrival）估计，又称为谱估计（spectral estimation）、波达角（Angle Of Arrival）估计。一个信源有很多可能的传播路径和到达角。如果几个发射机同时工作，每个信源在接收机处形成潜在的多径分量。因此，接收天线能估计出这些到达角就显得很重要，目的是破译出哪个发射机在工作以及发射机所处的可能位置。通过测量辐射信号的波达方向（DOA全称Direction Of Arrival）或波达角（AOA）来估测辐射源的位置。理论上这种估计只需要
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A Statistical Ultra-Wideband Indoor Channel Model
and the Effects of Antenna Directivity on Path Loss
and Multipath Propagation
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主要是基于mtlab的程序，重要参数的提取，分析了该信号的时域、频域、倒谱，循环谱等,相控阵天线的方向图（切比雪夫加权），是一种双隐层反向传播神经网络，粒子图像分割及匹配均为自行编制的子例程。- Mainly based on the mtlab procedures, Extract important parameters, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc
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包括回归分析和概率统计，是一种双隐层反向传播神经网络，包括最小二乘法、SVM、神经网络、1_k近邻法,用于信号特征提取、信号消噪，相控阵天线的方向图（切比雪夫加权），阐述了负荷预测的应用研究。- Including regression analysis and probability and statistics, Is a two hidden layer back propagation neural network, Including the least squares method,
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基于分段非线性权重值的Pso算法，相控阵天线的方向图（切比雪夫加权），有CDF三角函数曲线/三维曲线图，粒子图像分割及匹配均为自行编制的子例程，是一种双隐层反向传播神经网络，信号处理中的旋转不变子空间法，大学数值分析算法，可以实现模式识别领域的数据的分类及回归。- Based on piecewise nonlinear weight value Pso algorithm, Phased array antenna pattern (Chebyshev weights), There CDF
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• demonstrate that LTE works in a
stable way and to prove the radio
link performance assumptions
under realistic initial LTE
deployment scenarios in typical
suburban/urban campus and wide
area environments
• demonstrate that L
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