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在LMS通道中的主要功能是信号阴影,当卫星和用户终端之间没有清晰的视线(LOS)时,经历。陆地移动卫星信道描述的相对鲁棒模型是双态Lutz模型,其重点在于这种效应。在Ku波段的情况下,甚至可以假设只有LOS状态可以用于传输目的,而阴影状态总是导致错误的接收。
The main function in the LMS channel is the signal shading experienced when there is no clear line of sight (LOS) between the satellite and the user terminal. The relative robustness model described for terrestrial mobile satellite channels is a bimodal Lutz model that focuses on this effect. In the Ku-band case it can even be assumed that only the LOS state can be used for transmission purposes while the shadow state always leads to erroneous reception.