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題 名 | 應用合成口徑雷達干涉量測技術偵測大地微量變化=Use of Synthetic Aperture Radar Interferometry for Land Surface Deformation Detection |
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作 者 | 陳大科; 吳啟南; | 書刊名 | 地工技術 |
卷 期 | 69 1998.10[民87.10] |
頁 次 | 頁25-32 |
專 輯 | 新科技在大地工程之應用 |
分類號 | 440.98 |
關鍵詞 | 合成口徑雷達干涉量測; 大地地表變形; 干涉條紋圖; Synthetic aperture radar interferometry; INSAR; Land surface deformation; Interferogram; |
語 文 | 中文(Chinese) |
中文摘要 | 重覆軌道的衛星合成口徑雷達(SAR)影像若具有穩定的軌道基線長與高空間解 像力,可用於微量地表形變之偵測。本文利用SAR相位差理論所建立之干涉量測 技術(INSAR)研究探討量測地層下陷之能力。 本文以四幅1993年及1996年間高屏地區重覆軌道之ERS-1/2衛星合成口徑 雷達複數影像來研究偵測公分級地層變形量,經資料格式轉換、影像對位、干涉 條紋圖產生、軌道基線長計算、地球曲率效應移除、基線長微調、相位還原及數 值高程模型產生等影像處理後,以差分干涉量測技術,建立殘餘干涉條紋圖與地 層變形量間之關係。最後再評估INSAR技術於量測臺灣地層形變量之可行性。 |
英文摘要 | Repeat-pass satellite synthetic aperture radar(SAR) images having stable orbit baseline and high spatial resolution are good for detection of surface deformation. The ability of measuring land subsidence is studied by using differential intreferometry (D-INSAR) techniques that are based on SAR phase difference theorem. In this research, we use multiple repeat-pass complex SAR images (1993, 1996) from European Remote Sensing Satellite (ERS-1/2) to detect differential change in surface deformation on the order of centimeters in Taiwan Kao-Ping area. After the data processing by following steps: (l) data format conversion, (2) image registration, (3) interferogram generating, (4) baseline calculation, (5) earth curvature removal, (6) baseline fine-tuning, (7) phase unwrapping and DEM generation, the relationships between interferogram and surface deformation are established. The final work is to assess the feasibility of measuring land subsidence using the D-INSAR method. |
本系統中英文摘要資訊取自各篇刊載內容。