电波传播路径 meaning in English
wave-path
Examples
- 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 - 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。 - 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。 - 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。 - 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。