• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>OCEANS >A new multi-frequency HF radar based on small circular antenna array for sea surface current measurement
【24h】

A new multi-frequency HF radar based on small circular antenna array for sea surface current measurement

机译：基于小型圆形天线阵列的新型多频HF雷达用于海面电流测量

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A new multi-frequency HF (MHF) radar based on small circular antenna array is briefly introduced in this paper. For the purpose of reducing the area of receiving array, Radio Ocean Remote Sensing Laboratory of Wuhan University designed a small receiving array, which consists of 7 elements with a diameter of 5 meters, for MHF radar system in 2014. This new MHF radar system, adopting Frequency Modulated Interrupted Continuous Wave (FMICW) chirp, is capable of simultaneously operating at four frequencies at most in the band of 7.5???25 MHz. Because of the small antenna aperture, phase direction finding mode is utilized to estimate the direction of current signal. The paper investigates the performance of current measurements using this small receiving array by simulation and observation. Simulations not only study the performance of extracting radial current profile, but also involve the ability of estimating multiple current signals at one Doppler shift bin. Some preliminary observations are also shown in this paper. Comparisons between MHF radar and ADCPs demonstrate that MHF radar system with small circular array has the ability to measure currents with a good performance in the East China Sea.
机译：简要介绍了一种基于小型圆形天线阵列的新型多频HF（MHF）雷达。为了减少接收阵列的面积，武汉大学无线电海洋遥感实验室在2014年为MHF雷达系统设计了一个小型接收阵列，该阵列由7个直径为5米的元件组成。采用调频中断连续波（FMICW）线性调频脉冲，能够同时在7.5×25 MHz频段内以四个频率同时工作。由于天线孔径小，因此利用相位方向寻找模式来估计电流信号的方向。本文通过仿真和观察研究了使用这种小型接收阵列的电流测量性能。仿真不仅研究提取径向电流分布的性能，而且还涉及估计一个多普勒频移仓处多个电流信号的能力。本文还显示了一些初步的观察结果。 MHF雷达和ADCP的比较表明，具有小圆形阵列的MHF雷达系统具有在东海地区以良好的性能测量电流的能力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号