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空间太阳能电站(SSPS)方案之一是采用激光束实现天-地能量传输。研究激光能量传输的可行性,需要对激光束穿过大气层的过程进行分析。理论分析并数据模拟了激光在大气层中传输的过程,分析了大气在不同高度处对激光的作用,计算了不同高度处的激光光强和分布,同时分析了相应的大气温度和折射率的变化规律。研究发现,利用激光实现大气层垂直方向上的能量传输,需要控制激光的功率密度在一定范围,以减小能量的损失,同时避免对大气产生明显影响。在一定传输功率下,可以通过增加光束口径来减小激光的功率密度。
One of the Space Solar Power Station (SSPS) programs is the use of laser beams for day-to-Earth energy transfer. To study the feasibility of laser energy transmission, the process of laser beam passing through the atmosphere needs to be analyzed. Theoretical analysis and data simulation of the laser in the atmosphere of the transmission process, the analysis of the atmosphere at different heights on the role of the laser, calculated at different altitudes of the laser light intensity and distribution, while analyzing the corresponding changes in atmospheric temperature and refractive index law. The study found that the use of laser to achieve the vertical transfer of energy in the atmosphere requires that the power density of the laser be controlled within a certain range in order to reduce the energy loss while avoiding significant impact on the atmosphere. In a certain transmission power, you can reduce the laser power density by increasing the beam diameter.