Finally the author gives some Suggestions in improving radio propagation in roadways.
最后，提出了改进无线电波在井巷中使用效果的几点建议。
This paper provides an effective ray tracing method for prediction of microcell radio propagation.
本文提出一种能有效预测微小区环境中电波传播路径的射线跟踪算法。
Atmospheric duct is a common phenomenon over the oceans and conditions of anomalous radio propagation.
大气波导是海上经常出现的现象，会导致电波异常传播。
Hence, it is the plan's foundation to remodel the radio propagation model in the WCDMA network planning.
因此，在WCDMA的网络规划中，对无线电波的传播方式重新建模是其规划的基础。
Using the bibliometrics methods the document rules in the field of radio propagation have been investigated.
本文利用文献计量学方法对电波传播的文献规律进行了研究。
Therefore a new accurate prediction model must be established to analyze the radio propagation in microcellular.
这就需要建立一种精确的电波传播预测模型来分析微小区的电波传播。
The ray tracing technique has been demonstrated to be promising for indoor radio propagation modeling by many researchers.
射线跟踪技术是一种有效的室内无线传播建模方法。
Prediction of radio propagation plays a very important role in design and programming wireless communication network in modern mobile communication.
在现代移动通信系统的无线网络设计和规划中，电波传播预测是其中的一个重要环节。
Radio propagation in ocean wireless channel is different from the way in land. The ocean surface is roughness which is conformed to some statistical law.
无线遥测电波在海浪环境传播时不同于陆地，海浪的表面起伏不平，表现为一定的统计规律。
Effective designing, assessment, and installation of a radio network in an indoor environment require an accurate characterization of radio propagation channel.
室内环境中无线网络的有效设计、评估和安装是建立在对无线传播信道的准确描述之上。
The effective design, assessment, and installation of a radio network in an indoor environment require an accurate characterization of the radio propagation channel.
有效的设计、评估和安装室内无线网络需要准确地描述室内无线信道特性。
Building the radio propagation model on special frequencies is an important factor decided the mobile radio communication network whether or not to be put up successful.
在特定频段上建立无线传播仿真模型是决定移动通信系统无线网络搭建是否成功的重要因素之一。
Based on the mechanism of radio propagation, this paper builds an RFID signal loss model and calculates a safe working distance at which readers could operate simultaneously.
根据无线电波的传输机制建立起RFID系统信号损失模型，并推导出多读写器能够同时工作的安全距离。
This paper provides an effective ray tracing method for prediction of microcellular radio propagation, which is called a ray tracing method based on virtual source binary tree.
本文提出了一种能有效预测微小区环境中电波传播的射线跟踪算法——基于虚拟源二叉树的射线跟踪算法。
Along with the rapid development of high frequency radio technology, predicting characteristics of radio propagation in complex environments has become an important research subject.
随着高频电磁波技术的迅猛发展，复杂环境下的电波传播特性预测已经成为一个重要的研究课题。
Conventional method in radio propagation prediction is based on the fading channel models, with the aid of computer, mass of data were analyzed to make the propagation model localization.
常用的电波传播预测方法，一般是以路径损耗为预测模型，结合大量的测试数据，利用计算机进行辅助分析，实现传播模型本地化。
Propagation characteristic of UHF radio wave in rectangle, circle and arched tunnels is studied in this paper and the computing equation for attenuation constant is deduced.
研究UHF频段的无线电波在矩形、圆形和拱形隧道中的传播特性，推导了衰减常数的计算公式。
The highly sophisticated electronic methods rely on either light or radio wave propagation.
较复杂的电子技术是利用光或无线电波传播。
This paper presents an effective radio wave propagation prediction model by using radiation sources tree for microcellular environment. This model is based on ray-tracing and UTD.
提出了一种有效的微蜂窝电波传播预测模型，该模型基于射线跟踪法和UTD理论，并使用辐射源树的方法。
The sun sometimes spoils the propagation of radio waves.
太阳有时会干扰无线电电波的传播。
The sun sometimes spoils the propagation of radio waves.
太阳有时会影响无线电波的传播。
Each cell is equipped with a low-powered radio transmitter and receiver that permit propagation of signals among cell-phone users.
每个蜂巢装备有小功率的无线电发射器和接收器，使信号能在手机用户之间传播。
Whether the propagation models are accurate or not directly determines the credibility of radio network planning.
传播模型准确与否直接决定了无线网络规划的可信度。
This paper deals with the multiple phase screen mathematical model and simulation of radio signal propagation in the atmosphere.
采用多相位屏的数学模型，数值模拟无线电信号在大气中的传播过程。
It was modified combined with their actual measured values that the environmental factors in radio wave propagation model equation matrix of underground complex environment.
对井下复杂环境中无线电波传播模型方程中的环境因子矩阵，结合了实际测量值对其进行了修正。
The numerical result shows that the propagation of UHF radio waves favors high frequency.
数值分析的结果表明，UHF无线电波的较高频段能够在长壁工作面上传播。
It is an important action to improve the propagation quality of communication suffered from rising the BER on multipath propagation in digital mobile radio communication.
这对于在移动数字通信中，改善由多径效应引起的误码率增高而严重影响通信的传输质量，具有非常重要的指导作用。
Calculating the radio wave propagation circuits is one of the most important tasks in planning radio project for a mobile communication system.
对一个移动通信系统来说，电波传播电路计算是无线规划的最重要问题之一。
Calculating the radio wave propagation circuits is one of the most important tasks in planning radio project for a mobile communication system.
对一个移动通信系统来说，电波传播电路计算是无线规划的最重要问题之一。
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