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signals propagation
相关语句
  信号传播
     A Statistics Method for Signals Propagation Delay Prediction
     预报卫星信号传播时延的统计方法
短句来源
     The characteristic loss of MMDS signals propagation in route is demonstrated. From the aspect of engineering and technology needs,the analysis of parameter design of the MMDS receiving and transmitting system are conducted,and the measure of anti interferrence are given.
     分析 MMDS的天线及信号传播特性 ,并根据这些特性和工程的实际需要探讨了发射系统的工程设计方法和抗干扰措施
短句来源
     The principle that GPS signals propagation delayed in troposphere is reviewed in the paper.
     简单回顾了对流层中GPS信号传播延迟的原理。
短句来源
  “signals propagation”译为未确定词的双语例句
     The Acupuncture Electrical Signals Propagation and Quantitative System
     针刺电信息传递与量化系统研究
短句来源
     The advanced model of power transformer winding based on PD signals propagation is put forward for the first time. Through theoretical calculation and simulation analysis for transformer winding brand-new model, the relations between winding frequency characteristics and winding parameters are discussed.
     提出了一种基于局部放电信号传播特性研究的电力变压器绕组改进模型,通过对变压器绕组全新模型的复数方程法和网孔法的理论计算以及Saber仿真分析,研究了绕组频率特性与绕组参数的关系。
短句来源
     This paper we first bring the concept of “quantitative acupuncture”, study itsfunction on physiological modulation, model the electrical signals propagation systemin biology, physics and mathematics.
     本论文首先提出量化针灸学概念,探索针灸对各系统的生理调节功能并建立了针刺电信息传导系统的生理模型、物理系统模型以及数学模型。
短句来源
     METHODS Combining the theory of propagation in the lossy layered media with the technology of computer simulation, the propagation characteristic was analyzed and compared, through which the vital signals propagation characteristic in layered media was analyzed.
     方法 利用电磁波传输理论与计算机仿真相结合 ,对有耗分层媒质反射系数、透射系数、介质损耗系数、介质界面传输系数等传输特性在整个复频域内特性的分析与比较 ,分析生命信号在有耗层状媒质中传输的频率特性 .
短句来源
     Therefore, the following fundamental studies should be executed: characteristics of discharge pulse signals, propagation performance of discharge pulse signal along the windings, suppression techniques against the strong on-site electromagnetic noise, discharge pattern recognition and fault diagnosis.
     因此,需要深入研究的基础内容包括:放电脉冲信号特征,脉冲沿绕组的传播规律,现场强烈电磁干扰的抑制,放电故障模式识别等。
短句来源
  相似匹配句对
     Propagation of N-Pulse Signals in a Dissipative Medium
     有损介质中脉冲信号的传播
短句来源
     Effect of the Abnormal Propagation Conditions on the LF Signals
     异常传播条件对低频信号的影响
短句来源
     Wave propagation
     波的传播
短句来源
     recombination of signals.
     信号重组。
短句来源
     Information and Signals
     信息与信号
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  signals propagation
It models realistically users motion, and radio signals propagation in a city-like scenario.
      
The sound (tone signals) propagation is studied on a 510-m-long constant-depth (38 m) track (TON-310 Hz) and a 10.6-km-long track (TON-320 Hz), which is set up by placing the self-contained transmitter at the bottom (at a depth of 65 m).
      
Both backplanes have been successfully manufactured and tested, after careful pre-layout simulation of the signals propagation and integrity.
      


The relation between three main factors (waveform, channel and receiver) of active sonar is discussed in this paper. The models of active sonar channel, which include marine reverberation, signal propagation and object scattering in sonar processes, are described, by generalized scattering function and generalized coherence function. Physical significance and measuring method of both function are explained with aid of channel output corralation function and matched filter output. Finally, the fundamental...

The relation between three main factors (waveform, channel and receiver) of active sonar is discussed in this paper. The models of active sonar channel, which include marine reverberation, signal propagation and object scattering in sonar processes, are described, by generalized scattering function and generalized coherence function. Physical significance and measuring method of both function are explained with aid of channel output corralation function and matched filter output. Finally, the fundamental principles for design of the optimum waveform and the optimum receiver are presented.

本文讨论了有源声呐设计中的三大要素(声呐波形、声呐信道和接收机)之间的相互关系,着重讨论有源声呐信道(包括混响、传播和目标散射过程的信息模型),提出用统一的推广散射函数和相干函数来描述,并通过对信道输出相关函数以及匹配滤波输出的分析指出这两个函数的物理意义和测量方法,最后还讨论声呐最佳波形和最佳接收机设计的基本原则。

The theory of electromagnetic wave propagation on multiconductor overhead lines presented in this paper mainly deals with the study of propagation of power line carrier,and other low and high frequency signals on power lines. It is an important part of the theory of electromagnetic wave propagation. The mathematical model for calculating propaga- tion characteristics of a line can be derived. In this paper, a general solution to the electromagnetic field equations of signals propagation along a line is...

The theory of electromagnetic wave propagation on multiconductor overhead lines presented in this paper mainly deals with the study of propagation of power line carrier,and other low and high frequency signals on power lines. It is an important part of the theory of electromagnetic wave propagation. The mathematical model for calculating propaga- tion characteristics of a line can be derived. In this paper, a general solution to the electromagnetic field equations of signals propagation along a line is obtained by using a more strict method.Carson's method as well as some other methods are also discussed.We first consider a z directed infinite horizontal wire located at (xc,yc)abovethe multilayer earth,as shown in Fig.1. The current in the conductor is assumed to have the form I = I0e-rz. According to the theory of electromagnetic fields,the six components of the total electromagnetic fields in any one of the" regions can be expressed by eq. (8),in terms of two vector potentials A and F. The fields on every interface surface of these potentials satisfy the continuity constraints of eq.(9).Therefore the z component of the electric field above the ground is obtained in eq.(10). In a multiconductor system, the electromagnetic-fields in any region are the summation of the fields produceed by currents in every conductor.The solution to the axial component Ezo above the one-layer earth is obtained in eq.(24).In the derivation above, the only approximation made is that the wire is thin, i.e. rc< yc. Carson in his paper made two other approximations, eqs. (27)and(30).If these approximations are applied to eq.(24), we can obtain Carson's formula(31). In this case a multiconductor line above the earth can be treated as a transmission line.Inother methods,fewer approximations and two-or three-layer earth are assumed, so that the results obtained are more precise than those by Carson's formula, but they are more complicated, and therefore Carson's formula is still more populary used.Under conditions of very high frequency and extraordinary earth condition and line construction, there will be serious errors in Carson's formula, and the other formulas have also limited application. The method presented in this paper is generally applicable.

本文研究了电磁波在多层结构大地上空多导线线路上的传输。从求出的电磁波传输的解,可以导出目前各主要方法的结果。本文还分析了Carson方法在实际应用中的适应性。

In this paper, the model theory used to solve line transmission equations is introduced, and a new algorithm, called "Incident and Reflected Wave Method", is presented.If the model transformations V = SVm and I = QIm are applied, we can obtain eqs.(12)and (13).Then the solution's of phase voltages and currents can be calculated. The model theory is used not only to resolve the transmission eqs., but also to explain the phenomenon of signal propagation on a line and make some simplified calculations.The...

In this paper, the model theory used to solve line transmission equations is introduced, and a new algorithm, called "Incident and Reflected Wave Method", is presented.If the model transformations V = SVm and I = QIm are applied, we can obtain eqs.(12)and (13).Then the solution's of phase voltages and currents can be calculated. The model theory is used not only to resolve the transmission eqs., but also to explain the phenomenon of signal propagation on a line and make some simplified calculations.The advantages of this algorithm are implicit computation, less difference in absolute values between the components in the parameter matrix. Also it does not restrict. impedance at nonhomogeneous' points or on nonhomogeneous kinds of lines. Therefore numerical calculations are very accurate. The flow chart of the computer program based on this algorithm is shown in Fig.2. It can be used not only on minicomputers but also on some microcomputers.Some calculated results obtained by a superminicomputer are shown in Tables 1& 3 in comparison with the results calculated by some foreign supplier and values obtained by measurement on the sites.

本文论述了求解多导线传输线方程的模式理论,推导了一个适用于数值计算的新算法——入射波反射波法,并设计了一个完整的计算程序。本文对一些实例进行了分析计算,计算表明,本文的方法是令人满意的。

 
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