详细信息
蒸发波导环境下雷达电磁盲区的分布特征
The Distribution Characteristics of the Shadow Zone of Radar in Evaporation Duct
文献类型:期刊文献
中文题名:蒸发波导环境下雷达电磁盲区的分布特征
英文题名:The Distribution Characteristics of the Shadow Zone of Radar in Evaporation Duct
作者:张洁寒[1];郭涛[2];李雪萍[1];张瑜[1]
第一作者:张洁寒
机构:[1]河南师范大学物理与信息工程学院;[2]新乡学院物理系
第一机构:河南师范大学物理与信息工程学院,河南新乡453007
年份:2011
卷号:39
期号:4
起止页码:177-180
中文期刊名:河南师范大学学报:自然科学版
收录:CSTPCD;;北大核心:【北大核心2008】;CSCD:【CSCD_E2011_2012】;
基金:国家自然科学基金(61077037);河南省基础与前沿技术研究计划项目(092300410236;102300410011)
语种:中文
中文关键词:舰船雷达,蒸发波导,电磁盲区,射线追踪
外文关键词:ship-borne radar; evaporation duct; shadow zone of radar; ray tracing
摘要:蒸发波导是近海面大气环境中出现概率最高的一种大气波导,利用蒸发波导可以实现雷达超视距探测.然而,由于蒸发波导的存在,雷达的电磁盲区也会发生不同的变化,从而对岸基、舰船雷达的探测性能产生极大的影响.基于射线追踪技术,构建了电磁波传播路径的微分计算方法,并对蒸发波导环境中的岸基、舰船雷达电磁盲区随雷达天线高度变化特征进行了仿真与分析,得到了电磁盲区的分布特征,总结了电磁盲区的变化规律,从而为岸基、舰船雷达在蒸发波导环境中的探测性能评估奠定必要的基础.
Evaporation duct is the highest frequency duct near the sea surface. It can make the radar electromagnetic wave spread to a far fetch, and will have an important effect on the detection performance of shore-base radar and ship-borne radar. The purpose of this article is to evaluate the shadow zone of radar in the evaporation duct environment. By building dif- ferential calculation method based on ray tracing technology, the distribution of shadow zone of shore-base radar and ship-borne radar under different antenna height for evaporation duct environment is studied, which lays a necessary foundation for the shore-base radar and ship-borne radar to exert the largest effects in the evaporation duct environment.
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