• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Telecommunications and Radio Engineering >APPLICATION OF THE MATRIX PENCIL METHOD FOR RADAR MEASUREMENTS OF ELEVATION ANGLES OF LOW-ALTITUDE TARGETS OVER A DISTURBED SEA
【24h】

APPLICATION OF THE MATRIX PENCIL METHOD FOR RADAR MEASUREMENTS OF ELEVATION ANGLES OF LOW-ALTITUDE TARGETS OVER A DISTURBED SEA

机译：矩阵笔法在扰动海面低空目标俯仰角雷达测量中的应用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The study is focused on the problem of improving the accuracy of radar measurements of elevation angles of low-altitude targets over a sea. The Matrix Pencil method, which relates to the high spectral resolution techniques, is investigated in the paper as one of the possible instruments for solving the problem. A number of studies analyze the possibility of applying the method for measuring radio wave angles of arrival. However, the extent of its usefulness for solving the problem of interest requires to be analyzed with account of specific conditions under which elevation angles of low-altitude targets are measured. The study was carried out by means of computer simulations. The analysis covered sea states responsible for the specular as well as for high diffuse reflections. One of the main tasks of the present paper was determining the extreme measurement accuracy achievable by the method on the conditions where the diffuse reflection from the sea is considered as interference (the specular reflected signal along with the direct signal from the target is considered as the measured signal). It is shown that the Matrix Pencil method does not yield to the MUSIC method in this characteristic but even surpasses it, especially in the case of high diffuse reflections, when the improvement riches 20%. Another important task was investigation of the influence of a priori parameters of the method, specifically, the number of the measured signals, value of the so-called pencil- parameter and number of the spatial samples of the signal across the specified antenna aperture, on the measurement error. Recommendations have been developed on the selection of these parameters that make it possible to minimize elevation angle measurement errors. The performed investigation expands our understanding about the ways of improving the accuracy of measuring elevation angles of low-altitude targets over a disturbed sea.
机译：这项研究的重点是提高海上低空目标仰角雷达测量精度的问题。本文研究了与高光谱分辨率技术相关的矩阵铅笔方法，将其作为解决该问题的可能手段之一。大量研究分析了应用该方法测量无线电波到达角的可能性。然而，需要考虑测量低空目标仰角的特定条件来分析其对解决感兴趣问题的有用程度。该研究是通过计算机模拟进行的。分析涵盖了负责镜面反射和高漫反射的海洋状态。本文的主要任务之一是确定在将来自海洋的漫反射视为干扰（将镜面反射信号与来自目标的直接信号一起作为目标）的条件下，通过该方法可获得的极高测量精度。测量信号）。结果表明，在这种特性下，矩阵笔法不能像MUSIC方法那样屈服，甚至可以超过MUSIC方法，特别是在高漫反射的情况下，当改进达到20％时。另一个重要任务是研究该方法的先验参数对特定天线孔径上的测量信号数量，所谓的铅笔参数值和信号空间样本数量的影响。测量误差。已经针对这些参数的选择提出了建议，这些建议可以最大程度地减小仰角测量误差。进行的调查扩大了我们对提高扰动海洋上低空目标仰角测量精度的方法的了解。

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