摘要
PJ蒸发波导模型根据气象数据和海表温度预测蒸发波导高度及其修正折射率的垂直分布,目前对该模型预测可靠性的验证多数使用开阔海洋的气象数据,而较少使用沿海岸的气象数据。在介绍了PJ蒸发波导模型基本理论方法的基础上,利用实测的沿海岸气象数据和海上微波超视距传播实验中的传播损失观测值分析了PJ蒸发波导模型在沿海岸的适用性。结果表明,PJ蒸发波导模型使用沿海岸表面层气象数据计算出的波导高度高于实测波导高度,当实际的波导高度很低时,模型计算出的波导高度与实测高度相差很大,并且模型对海表温度的测量误差很敏感。
PJ evaporation duct model can predict evaporation duct height and vertical profile of modified refractivity. The reliability of PJ model is validated mostly by using the meteorologic data from open ocean instead of the meteorologic data from coastal area. This paper introduces the basic theoretical method of PJ evaporation duct model, based on it, the applicability of PJ evaporation duct model in coastal area is analyzed with the measured data from coastal area and the propagation loss in microwave over - the - horizon propagation experiment. The results indicate that the duct height calculated by using the PJ evaporation duct model is higher than the measured height. When the measured height is very lower, the height calculated by the PJ evaporation duct model makes a great difference to the measured height. The PJ evaporation duct model is very sensitive to the measured error of the sea surface temperature.
出处
《计算机仿真》
CSCD
2007年第6期86-88,137,共4页
Computer Simulation
关键词
蒸发波导模型
蒸发波导高度
修正折射率
海洋大气表面层
Evaporation duct model
Evaporation duct height
Modified refractivity
Marine atmospheric surface layer
