【摘要】 近海面的蒸发波导和大气负折射都是海洋大气表面层的异常折射结构,两者对电磁波传播都具有重要影响。利用M-O近地层相似理论推导了蒸发波导的模型,利用等效蒸发波导高度推导了大气负折射与蒸发波导的统一监测模型及其廓线结构参数的bulk计算方法,比较分析了蒸发波导与大气负折射在廓线结构方面的特征和差异,并利用2002年5月福建平潭岛的试验数据验证分析了大气负折射监测模型机廓线计算方法的适用性。更多还原

【Abstract】 The evaporation duct near sea surface and atmospheric negative refraction are abnormal refractive structures in the marine-atmospheric surface layer, which all pose a remarkable impact on the propagation of electromagnetic waves. This paper derives the evaporation duct model in line with the Monin-Obukhov similarity theory, establishes the integrated monitoring model for atmospheric negative refraction and evaporation duct as well as the bulk computing method of their profile structural parameters using equivalent evaporation duct height,and conducts a comparative analysis on the characteristics and differences of evaporation duct and atmospheric negative refraction in the aspect of profile structure. With the experimental data on May 2002 in Pingtan Island in Fujian Province, China, this paper validates and analyzes the applicability of the profile calculation method for the atmospheric negative refraction monitoring model.更多还原