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.
在短波信道建模中，通常采用对高斯白噪声滤波来仿真多普勒扩展效应，这些模型的时域相关值与理论值相差较大。
In HF channel modeling, doppler spread effects are usually simulated by filtering white Gaussian noise. The signal correlation in time domain deviates far from the theoretical value.
实验结果表明，该实验模型基本上反映了短波信道的特点。
The experimental results show that the model responses illustrate basically the characteristics of a HF link.
首先，根据短波信道的特点，分析了其对信号传输的影响，给出了等效基带传输模型。
First, according to the characteristics of HF channels, its influence on signal transmission is analyzed, and the equivalent baseband model of HF channels is provided.
首先，根据短波信道的特点，分析了其对信号传输的影响，给出了等效基带传输模型。
First, according to the characteristics of HF channels, its influence on signal transmission is analyzed, and the equivalent baseband model of HF channels is provided.
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