Measurement of Antenna Patterns for Oceanographic Radars Using Aerial Drones
Measurement of Antenna Patterns for Oceanographic Radars Using Aerial Drones
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DOI：
10.1175/jtech-d-16-0180.1
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发表时间：
2017-05
影响因子：
2.2
通讯作者：
L. Washburn;E. Romero;Cyril Johnson;B. Emery;C. Gotschalk
中科院分区：
文献类型：
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作者：
L. Washburn;E. Romero;Cyril Johnson;B. Emery;C. Gotschalk
摘要描述了一种使用小型无人机对用于观测海洋表面流的高频（HF）海洋雷达进行天线方向图测量（APM）的新方法。先前的研究表明，使用高频雷达进行精确的表面电流测量需要 APM。 APM 为测向雷达的接收天线提供方向校准。在没有 APM 的情况下，假定所谓的理想天线方向图，这些方向图可能与测量的方向图有很大不同。通常，APM 是使用携带无线电信号源或转发器的小型研究船在各个雷达站点周围的圆弧上获得的。这个过程非常昂贵，因为它需要航海技术人员、船只以及支持小船作业所需的其他设备。此外，恶劣的海况和水中的障碍物可能会限制小型船只执行反舰导弹的能力。相比之下，事实证明，无人机可以在更低的温度下成功执行 APM……
AbstractA new method is described employing small drone aircraft for antenna pattern measurements (APMs) of high-frequency (HF) oceanographic radars used for observing ocean surface currents. Previous studies have shown that accurate surface current measurements using HF radar require APMs. The APMs provide directional calibration of the receive antennas for direction-finding radars. In the absence of APMs, so-called ideal antenna patterns are assumed and these can differ substantially from measured patterns. Typically, APMs are obtained using small research vessels carrying radio signal sources or transponders in circular arcs around individual radar sites. This procedure is expensive because it requires seagoing technicians, a vessel, and other equipment necessary to support small-boat operations. Furthermore, adverse sea conditions and obstacles in the water can limit the ability of small vessels to conduct APMs. In contrast, it is shown that drone aircraft can successfully conduct APMs at much lower c...