QUANTIFYING PRECIPITABLE WATER VAPOR USING THREE-DIMENSIONAL RADIOSCOPY FROM OBSERVATIONS WITH GPS, BDS, AND GLONASS SATELLITES

This review article presents information and academic documents related to measuring precipitable water vapor in the atmosphere using 3D radioscopy by three satellite systems: GPS, BDS, and GLONASS. The review article presented the three methods to compare the differences in using a single satellite system, two satellite systems, and three satellite systems, respectively, which can measure the amount of precipitable water vapor in the atmosphere using 3D radioscopy. In addition to being beneficial for measuring precipitable water vapor in the atmosphere through photographic methods, it can also serve as a tool for research in forecasting precipitable water vapor for agricultural crop cultivation by farmers according to different seasons, predicting air humidity, rainfall, meteorological department reports, and monitoring global climate change.