Electromagnetic Scattering from the Sea at Low Grazing Angles
Electromagnetic Scattering from the Sea at Low Grazing Angles
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DOI：
10.1007/978-94-009-0627-3_3
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
L. Wetzel
中科院分区：
文献类型：
--
作者：
L. Wetzel
从舰船、岸上设施和低空飞行的飞机上运行的雷达不可避免地以从零度到几度的低掠角观察海洋。在这种情况下，预计表面可能经常被深深地笼罩在阴影中，但实验证据并不清楚，有时甚至相互矛盾。显然，这是一种非常特殊的散射体系，在其中，传统的海洋散射概念很可能用处不大。任何理解这一体制的方法都必须以两个基本问题为指导：1.在最一般的双基地散射情况下，在散射相互作用中，实际上有多少海面被同时照射和观察？2.在这些区域中，散射元素的特殊结构特征是什么，应该使用什么理论模型。
Radars operating from ships, shore installations, and low-flying aircraft inevitably view the sea at low grazing angles from zero to a few degrees. Under these conditions it is expected that the surface might often be deeply shadowed, yet the experimental evidence is unclear, sometimes even contradictory. It is obvious that this is a very special scattering regime, in which the conventional ideas of sea scatter are quite possibly of little use. Any approach to understanding this regime must be guided by two basic questions:1.In the most general case of bistatic scattering, how much, and what part of the sea surface is actually illuminated and observed simultaneously in a scattering interaction?2.What are the special structural characteristics of the scattering elements in such regions, and what theoretical models are to be used.