| Farneback光流法在雷达回波追踪中的应用 |
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| 引用本文： | 吴奕霄,李劲,项瑛,周学东,王珂清.Farneback光流法在雷达回波追踪中的应用[J].气象科学,2023,43(4):515-522. |
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| 作者姓名： | 吴奕霄 李劲 项瑛 周学东 王珂清 |
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| 作者单位： | 江苏省气候中心, 南京 210041;江苏省人工影响天气中心, 南京 210041;安徽省气象台, 合肥 230031 |
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| 基金项目： | 中国气象科学研究院基本科研业务费专项资助基金(2021Z003) |
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| 摘 要： | 本文基于Farneback光流法实现了雷达回波追踪,并选取不同天气类型的雷达资料进行测试评估,结果表明:利用Farneback光流法估算的位移场空间分辨率和准确度均较高,空间分辨率为1 km,风向风速与实况吻合,能清晰刻画出风场中的辐合辐散结构。利用主观对比法和客观指标计算法与交叉相关法(TREC)作对比,表明利用Farneback光流法得到的回波位移场精度优于TREC法,应用前景良好。
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| 关 键 词： | Farneback光流法 雷达回波追踪 TREC法 |
| 收稿时间： | 2023/3/6 0:00:00 |
| 修稿时间： | 2023/4/7 0:00:00 |
Application of Farneback optical flow method in radar echo tracking |
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| WU Yixiao,LI Jing,XIANG Ying,ZHOU Xuedong,WANG Keqing.Application of Farneback optical flow method in radar echo tracking[J].Scientia Meteorologica Sinica,2023,43(4):515-522. |
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| Authors: | WU Yixiao LI Jing XIANG Ying ZHOU Xuedong WANG Keqing |
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| Institution: | Jiangsu Climate Center, Nanjing 210041, China;Jiangsu Weather Modification Center, Nanjing 210041, China;Anhui Meteorological Observatory, Hefei 230031, China |
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| Abstract: | In this paper, radar echo tracking was realized based on Farneback optical flow method. Radar data of different weather types were selected for testing and evaluation. Results show that the displacement field estimated by the Farneback optical flow method has high spatial resolution and accuracy. The spatial resolution is 1 km. Wind direction and speed are very consistent with the observed data, which can clearly depict the convergence and divergence structure in the wind field. By using subjective comparison and objective indicator calculation method to compare with TREC method. It shows that the accuracy of the echo displacement field obtained by the Farneback optical flow method is better than that of the TREC method. The Farneback optical flow method has good application prospects. |
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| Keywords: | Farneback optical flow method radar echo tracking TREC method |
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