超视距低空电波传播模式研究分析  

Electromagnetic propagation pattern analysis of OTH radar in low altitude environment

作　　者：张宁 周亮 王玲玲 ZHANG Ning;ZHOU Liang;WANG Lingling(The Sth Research Institute of CSIC,Nanjing 211100,China)

机构地区：[1]中船重工第八研究院,南京211100

出　　处：《电波科学学报》2022年第2期177-182,197,共7页Chinese Journal of Radio Science

摘　　要：文中提出了一种电波传播模式分析方法.通过对PJ(Paulus-Jeske)波导进行参数估计,实现蒸发波导的完备性建模;采用抛物方程法分析气象环境中的二维电波传播路径损耗分布,利用最大值池化降低数据量,并采用自适应聚类分析实现电波传播模式分析,进而建立海杂波衰减规律与电波传播模式之间的映射,统计条件概率.结果表明,蒸发波导环境下海杂波衰减与电波传播模式之间具有相关性,分析结果能够展示蒸发波导中的电波传播模式,并且能够为海杂波反演大气波导提供先验条件概率分析.An analysis method of electromagnetic propagation mode is proposed in this paper.By estimating the parameters of Paulus-Jeske(PJ)model,a complete model of evaporation duct is realized.The parabolic equation model is used to analyze the two-dimensional electromagnetic path loss distribution in meteorological environment,the maximum pooling is applied to reduce the data,and the adaptive cluster analysis is used to analyze the electromagnetic propagation pattern.The mapping between the sea clutter attenuation and electromagnetic propagation pattern is established,and the conditional probability is calculated.The results show that there is a correlation between the sea clutter attenuation and electromagnetic propagation pattern in evaporation duct environment.The analysis results show the electromagnetic propagation pattern in evaporation duct and provide a priori conditional probability analysis for refractivity from clutter method.

关 键 词：大气波导 PJ模型 电波传播 海杂波反演 模式分析 

分 类 号：TN959.72[电子电信—信号与信息处理]