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一种电离层场向不规则体各向异性散射模型

DOI: 10.11728/cjss2015.05.549, PP. 549-555

Keywords: 电离层,场向不规则体散射,雷达横向截面

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Abstract:

电离层场向不规则体散射具有很强的方向性,利用电离层场向不规则体散射进行VHF频段超视距通信时,需要准确可靠地确定其散射分布特性及路径损耗等参数.基于电离层不规则体场向散射的特点,以地球地磁场为坐标系统,提出了一种电离层场向不规则体各向异性散射模型,该模型能够计算前向和后向散射链路的路径损耗分布、时延展宽和相干带宽等参数,同时运用该模型对雷达横向截面的计算结果与已有文献的数据结果进行对比,证明了该模型的准确性.该模型能够计算电离层场向不规则体VHF频段的散射分布及路径损耗等参数,为VHF散射通信链路的设计、布站提供依据和技术指导.

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