论文部分内容阅读
针对不同海拔的大气散射区域对紫外激光单次散射链路的影响,综合考虑气压、温度及臭氧浓度三个因素,对紫外光单次散射链路模型进行了修正。在此基础上,首先计算紫外激光通信系统在0～28km高空范围内的链路损耗。其次,在链路损耗最小条件下,分析通信距离、通信终端仰角以及发散角三者的相互关系。结果表明,收发端设置在高空0～15km的链路损耗较低,15～21km的链路损耗剧增。发射端仰角和通信距离的增大分别导致链路损耗增加;损耗最小时,发射端仰角与发散角近似呈线性关系,通信距离对该关系无明显影响。
Aiming at the influence of atmospheric scattering regions at different altitudes on the single scattering chain of ultraviolet laser, the UV single scattering chain model was modified by considering three factors of pressure, temperature and ozone concentration. On this basis, first calculate the link loss of UV laser communication system in the range of 0 ~ 28km altitude. Secondly, under the condition of minimum link loss, the relationship between communication distance, communication terminal elevation angle and divergence angle is analyzed. The results show that the link loss between 0 and 15 km at the sending and receiving end is lower and the link loss at 15 ~ 21 km increases dramatically. The increase of transmitter elevation angle and communication distance lead to the increase of link loss, respectively. When the loss is minimum, the transmitter elevation angle and divergence angle are approximately linear, and the communication distance has no obvious effect on the relationship.