| 引用本文: | 李海，张超群，郭生权，冯青. 基于二维统计分析的降水粒子分类方法[J]. 雷达科学与技术, 2022, 20(1): 41-50.[点击复制] |
| LI Hai, ZHANG Chaoqun, GUO Shengquan, FENG Qing. Classification Method of Precipitation Particles Based on Two-Dimensional Statistical Analysis[J]. Radar Science and Technology, 2022, 20(1): 41-50.[点击复制] |
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| 摘要: |
| 为解决双偏振气象雷达模糊逻辑方法如何确定隶属函数参数提高准确率的问题，本文使用二维统计分析的方法确定钟型隶属函数的参数，实现基于模糊逻辑双偏振气象雷达降水粒子分类方法。首先使用二维统计得到频次图，通过对频次图分析以及对隶属函数临界值的分析确定钟型隶属函数参数，然后根据极化参数的贡献程度以及准确率确定不同降水粒子各极化参数的权重系数。最后使用调节参数后的模糊逻辑方法对一次雷达数据进行降水粒子分类。通过对实测数据的结果分析证明了该方法的有效性。 |
| 关键词: 二维统计分析 模糊逻辑 降水粒子分类 双偏振气象雷达 |
| DOI：DOI:10.3969/j.issn.1672-2337.2022.01.007 |
| 分类号:TN959.4 |
| 基金项目:民机项目（No.MJ-2018-S-28）; 天津市自然基金重点项目（No.20JCZDJC00490）; 航空基金项目（No.20182067008）; 中央高校基本科研业务费项目（No.3122018D008）; 中国民航大学蓝天教学名师培养经费 |
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| Classification Method of Precipitation Particles Based on Two-Dimensional Statistical Analysis |
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LI Hai, ZHANG Chaoqun, GUO Shengquan, FENG Qing
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Tianjin Key Lab for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China
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| Abstract: |
| In order to solve the problem of how the fuzzy logic method of dual-polarization weather radar determines the membership function parameters and improve the accuracy, this paper uses the two-dimensional statistical analysis method to determine the parameters of the bell-shaped membership function, and realizes the precipitation particle classification method based on the fuzzy logic dual-polarization weather radar. Firstly, two-dimensional statistics is used to obtain a frequency map, and the bell-shaped membership function parameters are determined by analyzing the frequency map and the critical value of the membership function. Secondly, the weight of each polarization parameter of different precipitation particles is determined according to the degree of contribution and accuracy of the polarization parameters. Finally, the fuzzy logic method after adjusting the parameters is used to classify the precipitation particles of the primary radar data. The effectiveness of the method is proved through the analysis of the measured data. |
| Key words: two-dimensional statistical analysis fuzzy logic precipitation particle classification dual-polarization weather radar |
