摘要
推导了可形成波导传播的电磁波最大陷获波长和临界发射仰角,介绍了电磁波可形成波导传播的必要条件,在此基础上建立了在大气波导层中电磁波传播路径模式,并利用南京雷达实际观测的超折射回波对此模式进行了验证,所得结果比较一致。
The maximum trappedwavelength and critical emitting angle of elevation for electromagnetic wave to form duct propagation are derived in this paper,the four kinds of necessary conditions are introduced,and the equations for ray propagation situation in atmospheric duct are also given.Comparing the observation of superrefraction of radar wave in Nanjing with the model electromagnetic wave propagation path,we could explain the abnormal superrefraction echo with the model results.
出处
《南京气象学院学报》
CSCD
北大核心
2003年第5期631-637,共7页
Journal of Nanjing Institute of Meteorology
基金
中国气象局"新一代多普勒天气雷达资料应用
关键词
大气波导
形成条件
传播路径
超视距
模拟
atmospheric duct
necessary condition
propagation path
detection over visual range
