合成孔徑雷達差分干涉測量法是一項精準有效的地殼變形測量方法。與其他傳統大地測量法比較，雷達差分干涉測量具有許多優點，例如它不必到達實地即可施測、受雨霧影響較小、具全天候資料收集之能力、且能快速提供大範圍的地表資訊。中央大學太遙中心接收站自1993 年10 月開始接收人造衛星雷達影像資料。就研究地殼變形而言，目前台灣地區的雷達影像資料量已相當充足。本計畫將針對台灣地區，以歐洲太空總署發射之ERS-1 及ERS-2 衛星所擷取之雷達影像為主要資料來源，配合其他衛星影像為輔助，篩選出衛星軌道基線差較小的影像配對，進行影像差分干涉合成處理。本計劃自92 年6 月開始執行，至92 年12 月底止共歷時近七個月，其工作重點為台灣西部地區，包括新竹至台北以及恆春地區。92 年度的計畫已累積相當成果與研究經驗，發表多篇研究論文，並且也證明雷達差分干涉測量是一項快速、精準、且經濟的大地測量工具。如果獲得貴所持續的經費支持，未來的計畫預計為期三年，明年度的測量工作將從台灣東部地區，包括宜蘭花蓮及台東地區著手，逐步擴展為涵蓋全島之地殼變形觀測系統。本計劃預期可提供台灣東部地區雷達影像、同調性影像、差分干涉圖像、及地表位移圖（各預計30 幅），增進了解受測區域的活動變形分布、變形方式、速率與再現頻率，作為地質災害潛勢與危害度分析之依據。測量資料並可與其他大地測量資料（如GPS 測量及精密水準測量）互補，提供更完整之地表變形資訊。 Radar interferometry is a technique for extracting surface information of the Earth by using the phase content of the radar signal as an additional information source derived from the complex radar data.The use of DInSAR (Differential interferometric SAR) for monitoring earth deformation process has received considerable attention because of its great potential for mapping the movement associated with large earthquakes. In Taiwan, the Center for Space and Remote Sensing Research (CSRSR), National Central University has established its ground station in 1993 and then began to try to use SAR images acquired from European Space Agency (ESA) European Remote Sensing 1 and 2 (ERS1 and ERS2) satellite in detecting crustal deformation of Taiwan. Up to now, the SAR images for the Taiwan region have got a considerable collection. This project aims at applying the DInSAR technique to determine the crustal deformation of the Taiwan area. The SAR images used in this study are principally acquired by the satellites ERS1 and ERS2. The time to go through the first year of this project is taken into account as seven months (from JUN 2003 to DEC 2003), studied areas include Taipei, Hsinchu, and Hengchun. The experience of this first year suggests us that DInSAR is a useful high resolution technique in monitoring the crustal deformation. For the next year, our main target area will be shifted to the eastern Taiwan, including the Ilan, Hualien, and Taitung areas. It is anticipated to process at least 30 interferograms in this 研究期間：9302 ~ 9312
