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應用GPS多天線與虛擬參考站進行三維形變之監測

Monitoring three-dimensional Deformation Using multi-antenna GPS and Virtual Reference Station

摘要


本研究主要使用GPS全球定位系統,應用於國道三號85.6 km 處之邊坡滑動監測,並且使用e-GPS系統與一機多天線GPS形變系統進行監測作業,藉此比較二者不同系統在邊坡滑動的監測作業上之優劣。資料處理方面則是將一機多天線GPS形變系統之數據資料,使用TGO v1.5軟體與MaGMS v2.32軟體分別進行解算,以了解使用不同的解算軟體是否會存在著明顯的差異量。 根據研究成果中顯示,目前邊坡的平面位移情形是以每個月接近一公分的滑移速度朝向東南方進行滑動,在高程位移情形則有受擠壓後造成向上方隆起的情況出現,而整體邊坡的滑動方向是筆直的朝向國道三號推進,這也說明了此處邊坡確實對於國道三號高速公路的行車安全有著其隱藏性的威脅。在精度比較的部份則是以一機多天線系統的N方向0.18 cm、E方向0.25 cm、h方向0.57 cm的精度優於靜態相對定位所解算的N方向0.29 cm、E方向0.44 cm、h方向1.01 cm以及e-GPS系統的N方向1.44 cm、E方向1.51 cm、h方向2.96 cm的精度。雖然使用e-GPS系統擁有施測迅速以及費用較經濟等優點,但其精度顯示此系統只適用於擁有較大位移量的監測作業上。

並列摘要


The GPS technology is applied on the landslide monitoring at 85.6 km of the Formosa Freeway. Two kinds of systems including e-GPS and multi-antenna GPS are utilized for the three-dimensional deformation monitoring to compare the advantage and disadvantage of these two methods. When it come to the data processing, the TGO v1.5 software and MaGMS v2.32 software are employed to compute the GPS data obtained by multi-antenna GPS monitoring system. This analysis is to confirm the positioning precision when using different software. The landslide is moved averagely 1 cm per month to the east-south direction. Furthermore, it is crumpled and raised in the height direction. This landslide is moved slowly to the Formosa Freeway and menaced the safety of the drivers. When it come to the precision comparison, the positioning precision of multi-antenna GPS (0.18 cm, 0.25 cm and 0.57 cm in the north, east and height direction, respectively) is better than that of static relative positioning (0.29 cm, 0.44 cm and 1.01 cm in the north, east and height direction, respectively) and that of e-GPS technology (1.44 cm, 1.51 cm and 2.96 cm in the north, east and height direction, respectively). Although the e-GPS technology is a fast and economic method, the result presented that this system is only suitable for the large-movement monitoring.

並列關鍵字

GPS multi-antenna GPS landslide

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