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对直线运动型无线光通信中的光束偏转进行了分析,给出了不同运动距离与光斑半径、光接收功率的关系;不同偏转角度与光接收功率、像点偏移量的关系。在直线轨道上,进行了发射端静止、接收端运动,发射端运动、接收端静止两种情况下的光功率接收实验,并分别比较大孔径光纤和实心耦合光锥的空间光接收性能,提出采用实心光锥作为空间光耦合接收元件。实验结果表明:在运动距离最远为80 m的情况下,实心耦合光锥能有效接收光束偏移后的聚焦光信号,适用于直线运动型无线光通信。
The beam deflection in linear motion wireless optical communication is analyzed, and the relationship between different moving distances and spot radius and received power is given. The relationship between different deflection angles and optical received power and image point offset is also given. In the straight orbit, the experiments of receiving optical power under the condition of the stationary transmitter, the receiver, the receiver and the receiver are carried out. The spatial light receiving performance of the large aperture fiber and the solid coupling cone is compared respectively. A solid light cone is used as the spatial light coupling receiving element. The experimental results show that the solid-coupling light cone can effectively receive the focused optical signal after the beam is shifted with the distance of 80 m as far as possible, which is suitable for linear motion wireless optical communication.