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基于深度学习的天气雷达异常数据识别技术

张林 吴蕾 李峰 李雁 施丽娟 孙康远

张林, 吴蕾, 李峰, 等. 基于深度学习的天气雷达异常数据识别技术. 应用气象学报, 2023, 34(6): 694-705. DOI:  10.11898/1001-7313.20230605..
引用本文: 张林, 吴蕾, 李峰, 等. 基于深度学习的天气雷达异常数据识别技术. 应用气象学报, 2023, 34(6): 694-705. DOI:  10.11898/1001-7313.20230605.
Zhang Lin, Wu Lei, Li Feng, et al. Indentification of weather radar abnormal data based on deep learning. J Appl Meteor Sci, 2023, 34(6): 694-705. DOI:  10.11898/1001-7313.20230605.
Citation: Zhang Lin, Wu Lei, Li Feng, et al. Indentification of weather radar abnormal data based on deep learning. J Appl Meteor Sci, 2023, 34(6): 694-705. DOI:  10.11898/1001-7313.20230605.

基于深度学习的天气雷达异常数据识别技术

DOI: 10.11898/1001-7313.20230605
资助项目: 

国家重点研发计划 2022YFC3090602

国家重点研发计划 2018YFC1506103

南京气象科技创新研究院北极阁开放研究基金 BJG202203

中国气象科学研究院基本科研业务费专项资金 2021Z003

详细信息
    通信作者:

    吴蕾, 邮箱:wlaoc@cma.gov.cn

Indentification of Weather Radar Abnormal Data Based on Deep Learning

  • 摘要: 天气雷达基数据中因观测设备故障或标定问题而产生的异常数据, 直接影响天气雷达数据质量、定量估测降水及天气系统的分析和判断。目前在中国气象局气象探测中心实时业务中, 通过人工勘误环节对异常数据进行处理。针对2020—2022年业务中勘误较多的、大面积故障异常和易与降水数据混合的局部电磁干扰或故障的两类异常数据, 分别构建和训练R-ResNet和R-LinkNet两种模型, 提取雷达硬件故障、电磁干扰等特征, 实现异常数据的识别和处理。评估结果表明:两种模型在提取异常数据特征方面均具有很强的学习能力, R-ResNet在分类判识异常数据与正常数据的准确率超过99%, R-LinkNet在分离电磁干扰杂波和降水回波的准确率超过98%。两种模型可用于实时业务中监控和勘误电磁干扰、故障等异常数据, 实现异常数据的自动勘误处理。
  • 图  1  2020年全国布网运行天气雷达数据质量问题占比

    Fig. 1  Proportion of weather radar data quality problems in China in 2020

    图  2  全国各型号天气雷达电磁干扰占比及个例

    (a)各型号天气雷达电磁干扰占比,(b)2022年7月16日01:25:58山东滨州雷达电磁干扰(相邻距离圈间隔为50 km,下同)

    Fig. 2  Proportion of electromagnetic interference of various types of weather radar

    (a)proportion of electromagnetic interference, (b)a case of electromagnetic interference of Binzhou radar in Shandong at 012558 BT 16 Jul 2022 (the distance between adjacent rings is 50 km, similarly hereinafter)

    图  3  全国各型号天气雷达设备故障、标定异常数据占比及个例

    (a)各型号天气雷达设备故障、标定异常数据占比,(b)2022年4月11日11:21:10新疆图木舒克雷达异常数据

    Fig. 3  Percentage of abnormal data of equipment failure and calibration of various types of weather radar in China

    (a)proportion of abnormal data of equipment failure and calibration, (b)a case of abnormal data of Tumxuk radar in Xinjiang at 112110 BT 11 Apr 2022

    图  4  第2类异常数据原始图像与标签数据

    (a)2022年7月20日08:15:02黑龙江黑瞎子岛雷达观测图像,(b)标签数据

    Fig. 4  Observation image and label data of the second kind of abnormal data

    (a)observation image of Heixiazi Island radar in Heilongjiang at 081502 BT 20 Jul 2022, (b)label data

    图  5  ResNet50在第1类异常数据的准确率和损失率

    Fig. 5  Accuracy and loss of ResNet50 model on the first kind of abnormal data

    图  6  R-LinkNet在第2类异常数据的准确率和损失率

    Fig. 6  Accuracy and loss of R-LinkNet model on the second kind of abnormal data

    图  7  R-LinkNet分离黑龙江黑瞎子岛雷达观测电磁干扰和降水回波

    (a)2022年7月8日20:03:34观测图像,(b)2022年7月8日20:03:34质量控制后图像,(c)2022年8月5日10:03:35观测图像,(d)2022年8月5日10:03:35质量控制后图像,(e)2022年9月8日09:02:33观测图像,(f)2022年9月8日09:02:33质量控制后图像

    Fig. 7  R-LinkNet model discriminate electromagnetic interference and precipitation of Heixiazi Island radar in Heilongjiang

    (a)observation image at 200334 BT 8 Jul 2022, (b)image after quality control by R-LinkNet model at 200334 BT 8 Jul 2022, (c)observation image at 100335 BT 5 Aug 2022, (d)image after quality control by R-LinkNet model at 100335 BT 5 Aug 2022, (e)observation image at 090233 BT 8 Sep 2022, (f)image after quality control by R-LinkNet model at 090233 BT 8 Sep 2022

    表  1  ResNet基础模型准确率(单位:%)

    Table  1  Accuracy of ResNet models (unit:%)

    指标 数据 ResNet18 ResNet50 ResNet101
    Acc 训练集 99.92 99.98 99.99
    测试集 100 100 100
    Los 训练集 0.1 0.1 0.1
    测试集 0.1 0.1 0.1
    下载: 导出CSV

    表  2  模型准确率、损失率和交并比评估(单位:%)

    Table  2  Accuracy, loss and intersection over union of model (unit:%)

    数据 Acc Los Iou
    LinkNet R-LinkNet LinkNet R-LinkNet LinkNet R-LinkNet
    训练集 97.8 98.6 0.7 0.4 73.8 83.4
    测试集 97.8 98.6 0.7 0.4 73.5 83.2
    下载: 导出CSV

    表  3  R-LinkNet模型准确率检验评估(单位:%)

    Table  3  Evaluation of R-LinkNet model accuracy (unit:%)

    测试时间 R-LinkNet模型
    7月 8月 9月
    7月 98.6 98.5 98.3
    8月 98.2 98.6 98.5
    9月 98.0 98.3 98.6
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-06-06
  • 修回日期:  2023-09-26
  • 刊出日期:  2023-11-27

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