radio-wave propagation

Studies are presented on five radio propagation models in ITU-R recommendations.

文章介绍ITU -R 建议中五项电波传播技术模式的研究情况.

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Propagation time and synchronization accuracy of radio signals of short waves

短波无线电信号传输时间及时刻同步精度

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In network planning, radio propagation and coverage forecasting are both conducted on the basis of propagation models, while the classical models can not reflect the propagation characteristics of a particular environment accurately. Using these propagation models without calibrating may introduce serious errors into the predicted value.

在网络规划中，无线传播预测和覆盖预测都是基于传播模型进行的，而经典模型无法正确反映某个特定环境的电波传播特性，如果直接应用这些模型，预测值的误差可能很大。

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Then, an overview of the theory of radio emission mechanisms and the propagation of radio emission in solar coronal was done.

然后对有关射电辐射机制、传播的理论作了一个简要的回顾。

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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.

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