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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Ionospheric Clutter Suppression in HFSWR Using Multilayer Crossed-Loop Antennas
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Ionospheric Clutter Suppression in HFSWR Using Multilayer Crossed-Loop Antennas

机译:使用多层交叉环天线的HFSWR中的电离层杂波抑制

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摘要

Ionospheric clutter resulting from undesired radio signals reflected by the ionosphere severely deteriorates the detection performance of the high-frequency surface wave radar (HFSWR) in the mid- and low-latitude regions. To solve this problem, we propose a novel antenna configuration and method, i.e., using vertically placed, coaxial, multilayer crossed-loops as auxiliary antennas to cancel the clutter on the uppermost main crossed-loop (and/or monopole) antenna. The difference signals between the main and the auxiliary loops with the same normal direction are used as the reference signals in the adaptive filtering scheme to avoid cancellation of the wanted signals, i.e., the echoes horizontally coming from the sea surface. Both simulation and some preliminary experimental results are demonstrated to show the validity of the method.
机译:电离层反射的不想要的无线电信号导致的电离层杂乱严重恶化了中低纬度地区的高频表面波雷达(HFSWR)的检测性能。为解决这个问题,我们提出了一种新颖的天线配置和方法,即使用垂直放置的同轴多层交叉环作为辅助天线,以消除最上方的主交叉环(和/或单极)天线上的杂波。在自适应滤波方案中,具有相同法线方向的主回路和辅助回路之间的差信号被用作参考信号,以避免所需信号的抵消,即,从海面水平回波。仿真和一些初步的实验结果都证明了该方法的有效性。

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