The Near Real Time Atmosphere Model Based on the Gnss and the Meteorological Data From the Ground Base Augmentation System Asg-Eupos

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GNSS meteorology is the remote sensing of the atmosphere (particularly troposphere) using Global Navigation Satellite Systems (GNSS) to deliver information about its state. The two currently available navigation satellite systems are the Global Positioning System (GPS) and the GLObal'naya NAvigatsionnaya Sputnikovaya Sistema (GLONASS) maintained by the United States and Russia, respectively. The Galileo navigation satellite system, which is under supervision of the European Space Agency (ESA), is expected to be completed within the time frame of few years. Continuous observations from GNSS receivers provide an excellent tool for studying the earth's atmosphere.