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題 名 | A SAR Interferometry Simulator=合成口徑雷達干涉技術之模擬器 |
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作 者 | 曾裕強; | 書刊名 | Proceedings of the National Science Council : Part A, Physical Science and Engineering |
卷 期 | 21:3 1997.05[民86.05] |
頁 次 | 頁244-252 |
分類號 | 448.81 |
關鍵詞 | 合成口徑雷達干涉技術; 模擬器; SAR interferometry; Spatial decorrelation; Temporal decorrelation; Baseline; Spherical earth model; |
語 文 | 英文(English) |
中文摘要 | 近年來,合成口徑雷達干涉技術已被廣泛地應用在收值地圖之製作及地表覆蓋物之 變遷偵測等方面。此一技術是利用在幾何上有些許差異的兩接收器對同地區所取得的兩張合 成口徑雷達影像間相對的相位差來求得地表高度。由於台灣地形起伏相當大且其空間去相關 性及時間去相關性太高,致使吾人很難將合成口徑雷達干涉技術應用於此一地區所取得的影 像。故需要有合成口徑雷達干涉技術之模擬器。本文即利用合成口徑雷達干涉技術及球形地 球模式製作完成此一模擬器, 並由不同干涉參數的組合得到一組模擬 ERS-1 合成口徑雷達 干涉系統的干涉圖。實驗結果顯示,此模擬器確實為了解合成口徑雷達干涉技術之各項參數 的特性及驗證合成口徑雷達干涉技術之處理程序的發展提供了一個方便又有效的工具。 |
英文摘要 | In recent years, SAR (Synthetic Aperture Radar) Interferometry (also kn own as InSAR) has been widely applied to DTM (Digital Terrain Model) generation and land-cover change detection. The relative phase difference between two SAR i mages of the same scene acquired from slightly different geometries is used to derive the surface height. Because the terrain slope is large and spatial decorrelation and temproal decorrelation are considerably high in Taiwan, it is very difficult to apply SAR interferometric techniques to images acquired in this area. Therefore, an SAR inter-ferometry simulator is required. Based on the interferometric techniques and spherical Earth model, in this paper, we demonstrate the implementation of a SAR interferometry simulator. A set of interferogram images which simulatd the ERS-1 (first Earth Remote Sensing Satellite) SAR interferometric system were generated for different interferometric papameters combinations. The experimental results indicate that the simulator is an effective and efficient tool for understanding the charateristics of the InSAR parameters and for verification of the develoment of the InSAR procedures, thus, greatly enhancing the capability of InSAR. |
本系統中英文摘要資訊取自各篇刊載內容。