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对流层散射通信系统和电路设计散射角和散射传输损耗由不相干散射理论中公式(2)知道,随着散射角的增加,散射传输损耗迅速增大,一般每增加1°,散射传输损耗要增大约10分贝.可见,散射角是散射电路设计中的重要参数,一般应尽可能地减小散射角,并且在选择地形时天线前向应该沒有山丘等障碍物,或将收、发两端安置在山顶上,用来减少天线的出射角.散射角的计算如下(见图6):??????(3)
Tropospheric Scatter Communications Systems and Circuits Design Scattering and Scattering Transmission Losses As we know from Eq. (2) in the theory of incoherent scattering, as the scattering angle increases, the scattering transmission loss increases rapidly, and for every 1 ° increase, the scattering transmission loss increases About 10 decibels.It can be seen that the scattering angle is an important parameter in the design of the scattering circuit, the scattering angle should generally be reduced as much as possible, and there should be no obstacles such as hills in the forward direction of the antenna when the terrain is selected, or both ends Placed on the top of the mountain, used to reduce the antenna’s exit angle. The scattering angle is calculated as follows (see Figure 6): (3)