本文阐述陆地移动卫星通信系统(LMSS)及其信道传输的性能和特点。

The paper introduces the land mobile satellite communication system (LMSS) and its channel transmission performance and features.

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本文利用全阴影模型的研究结论，就实际陆地移动卫星信道部分阴影模型的仿真问题，拟合了模型参数与卫星仰角之间的关系。

These research results have been used to design the partial shadow model for simulating the same channel of LMS. The author fits the curves between the model parameters and satellite elevations.

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