Time-series Analysis of GPS Tropospheric Zenith Delays during the Passage of a Typhoon

• Main Authors: Yun-Chui Hsieh, 謝昀錐
• Other Authors: Joz Wu
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/4y9gk7

碩士 === 國立中央大學 === 土木工程研究所 === 97 === 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.