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相控阵天气雷达波束特性

杨金红 高玉春 程明虎 柴秀梅

杨金红, 高玉春, 程明虎, 等. 相控阵天气雷达波束特性. 应用气象学报, 2009, 20(1): 119-123..
引用本文: 杨金红, 高玉春, 程明虎, 等. 相控阵天气雷达波束特性. 应用气象学报, 2009, 20(1): 119-123.
Yang Jinhong, Gao Yuchun, Cheng Minghu, et al. Beam characteristics analysis on phased array weather radar. J Appl Meteor Sci, 2009, 20(1): 119-123.
Citation: Yang Jinhong, Gao Yuchun, Cheng Minghu, et al. Beam characteristics analysis on phased array weather radar. J Appl Meteor Sci, 2009, 20(1): 119-123.

相控阵天气雷达波束特性

资助项目: 

财政部行业专项“相控阵天气雷达系统关键技术研究” GYHY(QX)2007-6-2

国家自然科学基金项目 40575009

Beam Characteristics Analysis on Phased Array Weather Radar

  • 摘要: 为了缩短雷达的探测周期, 相控阵天气雷达必须采用宽波束发射, 多波束接收。该文在天线口径为均匀分布和非均匀分布情况下讨论了相位扫描天线的方向图, 对波束特性进行分析, 提出采用非均匀划分子空间方法可对相位扫描天线带来的波束展宽效应和增益减小进行补偿, 并模拟设计了一个相控阵天气雷达天线方案, 给出宽波束和多个窄波束方向图及波束参数。结果表明:海明加权方法可使副瓣电平降低到-25 dB, 能基本满足天气探测需求; 采用非均匀划分子空间能够对波束宽度和天线增益进行补偿; 文中所设计的天线方案不仅能够缩短雷达的探测周期, 还能充分利用雷达的照射能量。
  • 图  1  一维相位扫描天线方向图的模拟(d=0.5λ, sinθB=0)

    Fig. 1  Simulation of the antenna directional pattern of one-dimension phase scanning(d=0.5λ, sinθB=0)

    图  2  波束宽度随扫描指向角的变化曲线(a)修正前,(b)修正后

    Fig. 2  Graph of beam width versus scanning direction angle(a)the original,(b)the corrected

    图  3  天线增益随扫描指向角的变化曲线(a)修正前,(b)修正后

    Fig. 3  Curve of the antenna gain vs the angle of scanning direction(a)the original,(b)the corrected

    图  4  形成的发射宽波束方向图

    Fig. 4  Transmitted wide beam direction pattern

    图  5  多个接收波束形成原理示意图(T :发射, R:接收)

    Fig. 5  Principle illustration of multiple beam reception(T : transmit; R: receive)

    图  6  接收波束方向图

    Fig. 6  Received beam direction pattern

  • [1] 俞小鼎, 姚秀萍, 熊廷南, 等.多普勒天气雷达原理与业务应用.北京:气象出版社, 2006:1-2.
    [2] 张越, 张子良.相控阵天气雷达在大气探测中的应用.电子工程信息, 2005, (5): 1-3. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGQX200505001125.htm
    [3] 张越.相控阵技术在天气雷达中的应用.现代雷达, 2003, 25 (12): 23-25. http://www.cnki.com.cn/Article/CJFDTOTAL-XDLD200312007.htm
    [4] Forsyth D E, Kimpel J F, Zrnic D S, et al.Bulding the National Weather Radar Testbed (phased-array)∥Preprints, 19th International Conference on Interactive Information and Processing System (ⅡPS).Long Beach : American Meteorological Society, 2003.
    [5] Forsyth D E, Kimpel J F, Zrnic D S, et al.The National Weather Radar Testbed (phased-array)∥Preprints, 18th International Conference on Interactive Information and Processing System (ⅡPS).Orlando:American Meteorological Society, 200 2:140-141.
    [6] Sheldon L Katz, James V Melody, Tinothy W Hodge, et al. Radar Control Architecture for the Nation al Weather Radar Testbed∥Preprints, 30th Conference on Radar Meteorology.Munich: American Meteorological Society, 2001.
    [7] Forsyth D E, Kimpel J F, Zrnic D S, et al.Progress Report on the National Weather Radar Testbed (phased-array)∥Preprints, 21st International Conference on Interactive Information and Processing System (ⅡPS).San Diego:American Meteorological Society, 2005.
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    [9] McNellis T, Katz S, Campbell M, et al.Recent Advances in Phased Array Radar for Meteorological Applications ∥Preprints, 21st International Conference on Interactive Information and Processing System (ⅡPS). San Diego : American Meteorological Society, 2005.
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    [12] 唐斌, 向强, 郑晓霞.机载相控阵雷达前视圆面阵天线的方向图的合成.西南民族大学学报, 2005, 31(5): 739-742. http://www.cnki.com.cn/Article/CJFDTOTAL-XNMZ200505026.htm
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    [15] 盛蔚, 李伟, 毛士艺.相控阵自适应宽波束形成及其应用.现代雷达, 2004, 26(5): 48-52. http://www.cnki.com.cn/Article/CJFDTOTAL-XDLD200405015.htm
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出版历程
  • 收稿日期:  2007-09-07
  • 修回日期:  2008-08-18
  • 刊出日期:  2009-02-28

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