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兵工学报 ›› 2013, Vol. 34 ›› Issue (11): 1474-1478.doi: 10.3969/j.issn.1000-1093.2013.11.021

• 研究简报 • 上一篇    下一篇

金属球目标雷达成像特性分析

邓彬, 王瑞君, 秦玉亮, 王宏强, 黎湘   

  1. (国防科学技术大学 电子科学与工程学院, 湖南 长沙 410073)
  • 收稿日期:2011-11-18 修回日期:2011-11-18 上线日期:2014-01-22
  • 通讯作者: 邓彬 E-mail:dengbin@nudt.edu.cn
  • 作者简介:邓彬(1981—),男,讲师。
  • 基金资助:
    国家自然科学基金项目(61171133、61101182);湖南省杰出青年科学基金项目(11JJ1010)

Radar Imaging Characteristics of Metallic Spheres

DENG Bin, WANG Rui-jun, QIN Yu-liang, WANG Hong-qiang, LI Xiang   

  1. (School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, Hunan,China)
  • Received:2011-11-18 Revised:2011-11-18 Online:2014-01-22
  • Contact: DENG Bin E-mail:dengbin@nudt.edu.cn

摘要: 在金属球后向电磁散射精确解的基础上对其复雷达散射截面(复RCS)的幅度和相位特点进行了分析。金属球距离像在低频段呈现大小悬殊的2个尖峰,在高频段仅出现1个尖峰,其二维像在不同转角和频段下呈现出圆弧或点的特征。指出不同条件下金属球应当用色散、滑动或理想点散射中心模型进行描述。所揭示的金属球雷达成像特性对于RCS测量定标和散射源诊断分析具有参考价值。

关键词: 雷达工程, 金属球, 雷达散射截面, 复雷达散射截面, 雷达成像, 散射中心模型

Abstract: The amplitude and phase characteristics of complex radar cross section (RCS) of a metallic sphere are analyzed based on the precise solution of its back scattering. The high resolution range profile of a sphere takes on one or two peaks at different bands, while its 2D image can be typified by an arc or a point at different bands and rotation angles. A sphere should be characterized by a dispersive, migratory or pointlike scattering center model under different conditions. These conclusions may provide an important reference for RCS calibration and scattering source diagnosis.

Key words: radar engineering, metallic sphere, radar cross section, complex radar cross section, radar imaging, scattering center model

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