在宽带信道模型的基础之上，从理论上分析了电波信号通过电离层信道所经受的衰落影响。
Based on the ITS channel model this paper theoretically discusses the fading effect of the ionosphere to the signal which is reflected by the ionosphere.
本文从信道的统计特性出发，介绍了仿真研究所用的一种新的电离层宽带信道数学模型——ITS模型。
On the ground of the channel statistical characteristic, this paper introduces a new wideband channel model, ITS channel model, which is used by the emulation.
尽管短波窄带信道模型已经诞生了几十年，但是随着短波通信向宽带化发展，它已经不能适应复杂的短波宽带信道条件。
Although narrowband models of the HF channel have existed for many years, with the development of the HF communication they are not applicable to the complex wideband HF channel conditions.
超宽带信号经多径信道传播会产生严重的时间弥散。
In multipath environments, ultra-wide band signals suffer from severe time dispretion.
由于超宽带脉冲信号的极窄特性，室内密集多径信道将使超宽带信号产生严重的时间弥散。
Due to the extremely narrow character of UWB signal, dense multipath indoor channel will make UWB signal dispersed severely.
传统短波宽带接收机以硬件划分信道为主，无法实时处理大量的宽带信号。
The traditional HF broadband receiver mainly USES the hardware for channelization, and can "t process many broadband signals timely."
传统短波宽带接收机以硬件划分信道为主，无法实时处理大量的宽带信号。
The traditional HF broadband receiver mainly USES the hardware for channelization, and can "t process many broadband signals timely."
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