• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Radar >Low Power High Frequency Surface Wave Radar Application for Ship Detection and Tracking
【24h】

Low Power High Frequency Surface Wave Radar Application for Ship Detection and Tracking

机译：低功耗高频表面波雷达施用船舶检测和跟踪

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

摘要

High-Frequency (HF) radars are operated in the 3-30MHz frequency band and are known to cover ranges up to some thousand kilometers. Sky wave Over-the-Horizon Radars (OTHR) utilize reflection by the ionosphere, but they require a transmit power up to 100 kilowatts. Especially for oceanographic applications, low power High Frequency Surface Wave Radar (HFSWR) systems have been developed, which use ground wave propagation along the salty ocean surface. The WERA HF radar system transmits a power as low as 30 watts, but achieves detection ranges up to 200 kilometers, which are far beyond the conventional microwave radar coverage. Due to external noise, radio frequency interference, and different kinds of clutter, special techniques for target detection have to be applied. This paper describes a new signal processing approach based on a curvilinear regression analysis for thresholding combined with a constant false-alarm-rate (CFAR) algorithm for detection. The target locations detected by the HF radar are passed to a tracking filter utilizing range, azimuth, as well as radial and azimuthal velocities to track the ship locations. For a 12-hour period real HF radar data from the WERA system were processed and secondary ship locations were recorded from the Automatic Identification System (AIS). This data set is used to assess the performance of the HF radar detections. Comparisons have been made for a maximum distance of 5km between AIS and radar detected locations. The deviation between AIS and radar detected locations was below 1 kilometer in 77% of these comparisons. A number of ships was detected and tracked by the radar, but could not be used for comparisons due to the lack of AIS information.
机译：高频（HF）雷达在3-30MHz频段中运行，已知覆盖距离大约千公里的范围。天潮过度地平线雷达（OTHR）利用电离层的反射，但它们需要高达100千瓦的发射电源。特别是对于海洋应用，已经开发出低功率高频表面波雷达（HFSWR）系统，使用沿着咸海表面的地波传播。 WERA HF雷达系统将电力低至30瓦，但达到高达200公里的检测，远远超出传统的微波雷达覆盖范围。由于外部噪声，射频干扰和不同种类的杂波，必须应用目标检测的特殊技术。本文介绍了一种基于曲线回归分析的新信号处理方法，用于与常数假警报速率（CFAR）算法组合进行检测。由HF雷达检测到的目标位置通过范围，方位角以及径向和方位角速度传递到跟踪滤波器以跟踪船舶位置。对于12小时的时间，来自WER系统的真实HF雷达数据被处理，并从自动识别系统（AIS）中记录次船位置。该数据集用于评估HF雷达检测的性能。在AIS和雷达检测到位置之间的最大距离已经为5km的比较。在这些比较的77％，AIS和雷达检测到位置之间的偏差低于1公里。雷达检测到并跟踪了许多船舶，但由于缺乏AIS信息，不能用于比较。

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