Utilization of Signal Global Navigation Satellite System (GNSS) for Meteorological

In this study, I show that microwave signals emitted from satellites and received by the GNSS system can be utilized for meteorological purposes, such as heavy rain in Indonesia, using open-source software goGPS. Comparison of the gradient of the North and East atmospheric delays between goGPS, IGS, and UNR. The correlation of the results of goGPS with those from IGS and UNR is relatively high. The gradient of the late goGPS and IGS, and UNR products show good consistency. This means that the process of goGPS is good enough to get an accurate value. The standard deviation and RMS difference between goGPS and IGS are 16.99 and -1.32 (in mm), respectively. The ones for the goGPS-UNR pair are 18.33 and -1.08. goGPS software works very well at different times and stations. This means that the goGPS software package can be an alternative to commercial software systems for ZTD estimation. The correlation of PWV values from GPS and radiosonde for the dry and rainy seasons are 0.84 and 0.73, respectively. PWV values during this dry period show a downward trend and an upward trend during the wet season period.