温湿度对海洋气溶胶散射特性的影响分析

根据米散理论,利用蒙特卡洛方法对不同湿度、温度条件下,海洋大气中气溶胶粒子的散射问题进行了详细分析,并分别对两种情况下的传输效果进行了仿真计算,结果表明,在其它外界条件相同的情况下,大气湿度越大,海洋气溶胶粒子半径越大,回波信号幅值越小,信号衰减越快;大气温度越高,回波信号幅值越强,从理论上证明了用激光方法探测大气波导具有一定的可行性。

Research of the Aerosol Scattering Properties Based on Evaporation Duct

Based on Mie scattering theory,the characteristic of laser beam propagation was analyzed.The two kinds of typical condition was that of different temperature and humidity.With montecarlo method,the scattering of atmospheric aerosols was simulated,the characteristic of laser beam propagation under the two kinds of typical meteorologic condition was analyzed.It came to the conclusion that the laser beam propagation have different features whether the atmospheric duct exist or not.The detailed conclusion was that,the radius of atmospheric aerosol increased when the atmospheric humidity increased,and the peak value of the return signal decreased,the signal attenuated faster.The peak value of the return signal became stronger when the temperature increased,these indicated that detecting the atmospheric duct with laser method was probable.