颱風是侵襲台灣最嚴重的天氣系統。準確估計他們的路徑、強度、降雨以及風場是非常重要的，因為可以減少它們對農業、工業以及人類生命的傷害。大氣層的水氣含量是降雨量的來源，以及維持颱風動力的主要能量來源。GPS在颱風過境時期可以提供對流層天頂向延遲的量測。它的空間和時間分布，在監測颱風上是有價值的。所以我們應用GPS感測技術來監測這時期的對流層天頂向延遲。 本研究利用國土測繪中心e-GPS及宏遠儀器公司在北台灣地區設置的參考站，將接收的GPS資料進行本研究的分析。並使用本實驗室研發的ManGo軟體來解算各接收站的GPS訊號在大氣層所造成的延遲量。將這些接收站的天頂向延遲量以最小二乘配置法為內插模式，並隨著時間序列呈現對流層天頂向延遲面函數成果。 Typhoons are the most serious weather systems that threaten Taiwan. Accurate prediction of their track, intensity, precipitation, and wind fields is extremely crucial to reduce their damages to agriculture, industry, and human life. Atmospheric water vapor is the source of precipitation, and a dominant element of the energy source to maintain the dynamics of the typhoons. Spatial and temporal distribution through GPS tropospheric zenith delays (TZD) is valuable in the monitoring of typhoons. We apply a GPS sensing technique to monitoring TZD during the period. In this study, GPS data are analyzed from e-GPS stations and Control Signal Company in northern Taiwan. We use Managing GPS-data for orientation (ManGo) software to solve GPS signals for delay due to the atmosphere at the sites. And we interpolate these stations’ data for least squares collocation (LSC), and display the results with time series.
