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研究生(外文):Yu-Zong Jiang
論文名稱(外文):Wind Field Estimation and Interpolation
指導教授(外文):Shih-Guang Wong
外文關鍵詞:wind field estimationDoppler radar datawind field interpolationvector field visualization
  • 被引用被引用:1
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Doppler radars are useful facilities for gathering meteorological data. By analyzing radar data, meteorologists can understand the information about the state of weather, and predict the weather in the future. Therefore, a visualization system dedicated to the post-processing of Doppler radar data is important for weather forecasting and analysis.
In this thesis, we propose a visualization system to visualize the wind field gathered by Doppler radars. We use terrain information to filter out noises. Then, a hierarchical optical flow method is adopted to compute the horizontal wind field. To synchronize the meteorological data scanned by different radar stations with different scanning speeds, we interpolate the wind field by using special Navier Stokes equations. Therefore, we can calculate the vector field data at any time point for each radar. Once the vector field at all time points are available, streamline and glyph images are used to reveal the wind fields.
1. 緒論 1
1.1. 前言 1
1.2. 相關研究 1
1.3. 研究方法簡介與論文結構 3
2. 背景知識介紹 5
2.1. 氣象雷達資料 5
2.2. 光流法 6
2.3. 流線 7
3. 雷達資料重新取樣和濾波 8
3.1. 雜訊濾波器 8
3.2. 建構規則化網格資料 10
4. 估算水平風場 12
4.1. LK METHOD 12
4.2. 使用多層次解析度結構 15
5. 內插風場資料 17
5.1. 風場內插流程 17
5.2.1. 外力與對流 20
5.2.2. 壓力場梯度 21
5.3. 風場內插實作方法 22
5.3.1. 內插範例 23
5.4. 合併多個雷達站的雷達資料 25
6. 實作結果與分析 26
6.1. 風場內插結果與分析 26
6.2. 同步多個雷達站之結果 30
7. 結論與展望 32
7.1. 結論 32
7.2. 展望 32
參考文獻 33
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