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.

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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.

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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.

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