A model for determination of radome transmission, reflection, depolarization, loss, and effects on antenna patterns

R. McMillan, M. Wicks, G. Genello
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引用次数: 6

Abstract

Even though a radar antenna may be carefully designed to have low sidelobes and high radiation efficiency, a poorly designed radome can degrade its performance seriously. Degradation occurs both because of losses in the radome and by distortion in the antenna pattern as a result of deformation of the effective illumination pattern. In addition, radiation scattered from the radome may affect the radar performance by elevating antenna sidelobes, thus adding to the clutter that must be mitigated via signal processing. We present a method for analyzing radome performance and give examples of calculations showing transmission, reflection, loss, and antenna pattern effects for spherical and ogive radomes. The approach is sufficiently general for application to almost any radome shape.
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确定天线罩传输、反射、去极化、损耗和对天线方向图影响的模型
尽管雷达天线可能被精心设计成具有低副瓣和高辐射效率,但设计不良的天线罩会严重降低其性能。由于天线罩的损耗和由于有效照明方向图的变形而导致的天线方向图的畸变,会发生退化。此外,来自天线罩的散射辐射可能会通过提高天线旁瓣影响雷达性能,从而增加必须通过信号处理来减轻的杂波。我们提出了一种分析天线罩性能的方法,并给出了显示球形和正交天线罩的传输、反射、损耗和天线方向图效应的计算示例。该方法具有足够的通用性,几乎适用于任何天线罩形状。
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Notice of RetractionMultichannel super high resolution. Novel channel equalization and multidimensional arbitrary pattern synthesis Improving the sidelobes of arrays fed by multiple-beam beam formers Antenna measures of merit for ultra-wide synthetic aperture radar Intelligent low rate compression of speckled SAR imagery Airborne ground moving target indication using non-side-looking antennas
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