English translation for "电波传播路径"
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- wave-path
Related Translations:
电波吸收: radio wave absorption 电波场强: radio wave field strength 电波暗室: anechoic chamberradiated testrs test 横向电波: transverse electric wave 电波干扰: electromagnetic disturvanceinterference of wavesjammerjammingradio wave interferencewave interference 交替电波: alternating electric wave
- Example Sentences:
| 1. | Modeling of propagation path loss in a canopy
树冠中电波传播路径损耗的研究及模型的建立 | | 2. | In wireless communication , the relative movement between the transmitter and the receiver may cause the change of the electromagnetic wave propagation path , thus makes the channel become a random time - variety channel
在无线通信中,发射机和接收机之间的相对移动会造成电波传播路径的改变,从而使信道变成随机时变信道。 | | 3. | In order to utilize the frquency resource adequately and increase the capacity of mobile communication system , the wireless electric wave propagation of existing mobile system always adopts the microcell structure . forecasting the path loss characteristic of electric wave accurately can provide the necessary condition for the layout and design of wireless network , at the same time it is a precondition for the research on the microcell mobile system . the methods of forecasting of wireless electric wave propagation can divide into two parts : one is pluse and respond , that is establish the empirical model based on experimental and statistical data ; the other is ray tracing method , that is establish the deterministic model based on theoretical analyse . the paper discuss the characteristic of wireless signal electric wave transmition in symmetrical atmosphere of earth , and introduce the common path loss transmition model in land mobile communication system , also point out the localization of these models based on experiential methods
而精确预测无线电波传播路径损耗特性，则为合理的微蜂窝无线网络规划、设计提供了必要条件，同时也是研究微蜂窝移动通信系统性能的前提。无线电波传播预测的方法分为两类：一是用冲激响应法，即根据实验、统计所得数据建立经验性传播预测模型；另一种是用射线跟踪方法，即依据理论分析来建立确定性的传播预测模型。本文首先讨论了在地球表面均匀大气中的无线电波传播的基本特性，介绍了陆地移动通信系统中常用的几种电波传播路径损耗经验性预测模型，并指出了这些经验性传播模型对于微蜂窝小区无线电波传播特性研究的局限性。 | | 4. | With the three - dimensional ray - tracing program , the simulation of leo - gps occultation is given . the radio path of occultation observation is simulated , and then the excess phase delay is calculated . this work can be used for studying the effects of the neutral atmosphere and ionosphere on the occultation observations and evaluating the performance of the inversion techniques
本文介绍了无线电掩星技术的发展状况和基本原理,围绕无线电掩星技术及其应用研究展开诸多研究和探讨,主要工作内容如下: 1 、利用全球三维射线追踪程序,开展leo - gps掩星观测的模拟研究,以计算掩星观测时电波传播路径、计算大气引起的附加相位时延等。 | | 5. | This text has counted the electric wave propagation path loss of street in one kind of typical rule range urban area , and reaches calculations data fairly with the measured data in the document . then calculate and analyze electric wave propagation ’ s characteristic in urban area . finally give an electric wave propagation prediction application example of column building model
本文最后计算了一种典型的规则排列得城市环境中街道得电波传播路径损耗,并与文献中得实测及计算数据进行了比较,然后进一步对矩形、圆柱型建筑物城市小区电波传播进行了分析计算。 | | 6. | It can be used in any complex environment , can locate all paths from transmitter to receiver which avoid redundant calculation , and it is a standard 3 - d forecast model ; in addition , it is a point to point ray tracing method based on specular theory which do n ' t carry out the receive test ; furthermore the model adopt the reverse arithmetic which exert the tree concept in data frame and establish a virtual fountain tree permanently , the proagmme can back - search the virtual fountain tree when it is running . these operation increase the calculate speed and it result in the higher receive efficiency and precision . the thesis design a programme to compare the prediction results based on ray tracing method of virtual fountain tree between the measurement results and prediction results based on the other transmittion models . the comparsion result indicate the new model is a better model
它可应用于任何复杂的传播环境中，能找到发射机到接收机之间的所有电波传播路径而无须冗余的计算，是一种准三维的预测模型；另外，从本质上讲，它仍然是一种基于镜像理论的点对点的射线跟踪法，所以它无须进行接收测试；而且由于采用了反向算法，运用数据结构中多叉树的概念，先确定需要计算的场点位置，找出所有能从源点到达场点的射线，并且可一次性建立一个虚拟源树，以后每次的计算只要通过对该树进行后序遍历即可，大大提高了运算速度，因而有较高的接收效率与精度。本文对该模型进行了相应的仿真，并将其预测结果与实测结果以及基于cost231经验性模型和基于强力射线跟踪确定性模型的预测结果进行了比较，结果表明了该模型的优越性。 | | 7. | Accordingly ray tracing model for microcells propagation prediction has become an important subject . this paper discussed the characteristic of propagation in symmetrical atmosphere on the earth , and introduced several kinds of traditional path loss propagation model in land mobile communication system , also pointed out the localization of these models based on experiential methods
本文首先讨论了在地球表面均匀大气中的无线电波传播的基本特性,介绍了陆地移动通信系统中常用的几种电波传播路径损耗经验性预测模型,并指出了这些经验性传播模型对于微蜂窝小区无线电波传播特性研究的局限性。 |
- Similar Words：
- "电波波形的畸变" English translation, "电波不透过" English translation, "电波场强" English translation, "电波场强曲线" English translation, "电波传播" English translation, "电波传播实验室" English translation, "电波传播学会" English translation, "电波刀" English translation, "电波的干扰" English translation, "电波的吸收" English translation
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