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宁波非气象雷达回波的人工智能识别及滤波

何彩芬 黄旋旋 丁烨毅 朱龙彪

何彩芬, 黄旋旋, 丁烨毅, 等. 宁波非气象雷达回波的人工智能识别及滤波. 应用气象学报, 2007, 18(6): 856-864.
引用本文: 何彩芬, 黄旋旋, 丁烨毅, 等. 宁波非气象雷达回波的人工智能识别及滤波. 应用气象学报, 2007, 18(6): 856-864.
He Caifen, Huang Xuanxuan, Ding Yeyi, et al. The artificial intelligence identification and filtering methods for non-meteorological radar echo in Ningbo. J Appl Meteor Sci, 2007, 18(6): 856-864.
Citation: He Caifen, Huang Xuanxuan, Ding Yeyi, et al. The artificial intelligence identification and filtering methods for non-meteorological radar echo in Ningbo. J Appl Meteor Sci, 2007, 18(6): 856-864.

宁波非气象雷达回波的人工智能识别及滤波

The Artificial Intelligence Identification and Filtering Methods for Non-meteorological Radar Echo in Ningbo

  • 摘要: 统计分析2003—2006年宁波雷达的非气象杂波, 影响杂波主要为地物杂波, 包括普通地物杂波 (NP杂波) 和异常地物杂波 (AP杂波) ; 并分析这些杂波在反射率因子、径向速度、谱宽产品上不连续的离散状分布等特征。基于以上特征及传统杂波识别的经验而设计出一种近似模拟人眼模糊识别的稳定安全的多维线性近似的杂波识别及其过滤算法, 在 190 个个例测试中大都效果较好, 尤其在 150 km 以内, 能够在确保降水数据完整、准确的基础上有效过滤非气象杂波。
  • 图  1  2016年6月13日宁波雷达05:50(北京时,下同)径向速度图及滤波前后反射率因子产品对比图

    (距离圈相距50 km)

    Fig. 1  The Nigbo radar products of radia velocity and refelctivity before and after the filtering at 05:50 on June 13, 2006.

    (the distance between adjaceat circles is 50 km)

    图  2  图 1,但是2006年4月10日06:55

    Fig. 2  Same as in Fig.1, but for 06:55 on April 10, 2006

    图  3  图 1,但是2006年4月10日11:54

    Fig. 3  Same as in Fig.1, but for 11:54 on April 10, 2006

    图  4  图 1,但是2006年7月20日05:55

    Fig. 4  Same as in Fig.1, but for 05:55 on July 20, 2006

    图  5  图 1,但是2006年6月8日23:00

    Fig. 5  Same as in Fig.1, but for 23:00 on July 8, 2006

    表  1  3 种情况下不同距离范围内的滤波效果对比分析与降水误滤分析

    Table  1  The contrast analysis on filtering impact in different ranges under the three instances and the percentage of reserved real precipitation

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    [2] Joss J, Lee R. The application of radar-gauge comparisons to operational precipitation profile corrections. J App Meteor, 1995, 34: 2612-2630. doi:  10.1175/1520-0450(1995)034<2612:TAORCT>2.0.CO;2
    [3] Kessinger C, Ellis S, Andel J Van, The radar echo classifier: A fuzzy logic algorithm for the WSR-88D. 19th Int'Conf on Inter Inf Proc Sys (IIPS) for Meteor Ocean, and Hydr, Amer Meteor Soc, Long Beach, CA, 2003.
    [4] Saffle R E, Istok M J, Johnson L D. NEXRAD open systemsprogress and plans. Preprints, 17th international conference on interractive information and Processing Systems (IIPS) for Meteorology, Oceanography, and Hydrology, American Meteorological Society, Albuquerque, NM, 14-18 Jan 2001: 97-100.
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出版历程
  • 收稿日期:  2007-01-23
  • 修回日期:  2007-07-11
  • 刊出日期:  2007-12-31

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