| 基于修正TV范数光流法的Himawari-8云导风算法研究 |
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| 引用本文： | 贾静荣,孙逢林,邱启荣,闵敏,胡开喜. 基于修正TV范数光流法的Himawari-8云导风算法研究[J]. 大气与环境光学学报, 2018, 13(6): 453 |
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| 作者姓名： | 贾静荣 孙逢林 邱启荣 闵敏 胡开喜 |
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| 作者单位： | 1.华北电力大学数理学院,北京102200;2.国家卫星气象中心, 北京100081;3.国家气象信息中心, 北京100081 |
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| 摘 要： | 修正TV范数光流法是基于新一代静止轨道气象卫星Himwari-8 探测的云图数据提出的反演云导风的方法。该方法首先通过ROF去噪模型提取云图细节部分,提出应用TV-L1范数局部惩罚项的光流法实现了高分辨率云导风反演,依靠质量标识对所求导风进行质量控制, 去掉不合理风矢。实验结果表明,该方法适用于400 hPa高度以下的中低云云导风计算。
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| 关 键 词： | 云导风 Himawari-8,ROF去噪模型 修正TV范数光流法 质量控制, |
Research on Cloud Derived Wind Algorithm of Himawari-8 Based on Modified TV Norm Optical Flow Method |
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| Affiliation: | 1~School of Mathematics and Physics, North China Electric Power University, Beijing 102200, China; 2~National Satellite Meteorological Center, quad Beijing 100081, China; 3~National Weather Information Center,quad Beijing 100081, China |
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| Abstract: | Based on the cloud image data of a new generation of stationary orbit meteorological satellite Himwari-8 AHI, the modified TV norm optical flow method is put forward to reverse the cloud derived wind. Firstly, through the ROF denoising model the image details are extracted. Using TV-L1 norm local penalty, the optical flow method is presented to achieve a high resolution cloud derived wind inversion. The quality of cloud derived wind is controlled based on quality identification. And unreasonable wind vector is removed. The experimental results show that this method is suitable for cloud derived wind of the low and medium cloud level under the height of 400 hPa. |
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| Keywords: | cloud derived wind Himawari-8 ROF denoising model modified TV norm optical flow method quality control |
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