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首页> 外文会议>2014 Oceans-St. John's Conference >Initial surface current measurements on the West Florida shelf using WERA HF ocean radar with multiple input multiple output (MIMO) synthetic aperture
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Initial surface current measurements on the West Florida shelf using WERA HF ocean radar with multiple input multiple output (MIMO) synthetic aperture

机译：使用具有多输入多输出（MIMO）合成孔径的WERA HF海洋雷达在西佛罗里达大陆架上进行初始表面电流测量

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摘要

High-frequency (HF) radar systems located at the coast are well-known as a measurement tool for synoptic online mapping of ocean surface current fields. These radars use surface electromagnetic wave propagation coupled to the salty ocean surface and are capable of monitoring thousands of square kilometers of the ocean surface. For oceanographic applications, low transmit power HF radar beamforming systems have been developed for operation in the 3-30 MHz frequency band. These systems require the use of a linear array of receive antenna elements whose inter-element spacing is dependent upon the operational frequency chosen. This paper presents a new approach of applying the Multiple Input Multiple Output (MIMO) technique with a synthesized antenna aperture to a compact HF ocean radar. The initial results show that the MIMO HF radar configuration with collocated receive antennas can be used for both oceanographic measurements and ship tracking applications. Initial MIMO results also reveal that positive results can be achieved from a reduced length receive array without reducing overall system performance. The comparison between standard and MIMO configurations has been focused on the estimation of surface current velocities and comparison with in-situ acoustic Doppler current profiler (ADCP) measurements.
机译：众所周知，位于海岸的高频（HF）雷达系统是用于对海表电流场进行天气在线在线制图的测量工具。这些雷达使用与盐海表面耦合的表面电磁波传播，并能够监视数千平方公里的海洋表面。对于海洋学应用，已经开发了低发射功率的HF雷达波束成形系统，可以在3-30 MHz的频带中运行。这些系统要求使用接收天线元件的线性阵列，其元件间间隔取决于所选的工作频率。本文提出了一种将具有合成天线孔径的多输入多输出（MIMO）技术应用于紧凑型HF海洋雷达的新方法。初步结果表明，具有并置接收天线的MIMO HF雷达配置可用于海洋测量和船舶跟踪应用。初始MIMO结果还表明，在不降低整体系统性能的情况下，通过减小长度的接收阵列可以获得积极的结果。标准配置和MIMO配置之间的比较一直集中在表面电流速度的估计以及与原位声学多普勒电流剖面仪（ADCP）测量的比较上。

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