GNSS-observation

Currently, Global Navigation Satellite Systems (GNSS) are increasingly used in atmospheric monitoring tasks. To determine tropospheric delays, two approaches are most often used: the calculation of atmospheric radio sounding data and the processing of GNSS observations. GNSS processing is, generally, based on two methods, namely precise point positioning (PPP) and double-differencing (DD). PPP is a potent data analysis instrument sensitive to a variety of parameters.

Purpose. It is necessary to examine the azimuth-temporal variations of the ionosphere during active disturbance, according to observations SULP-station and to analyze the data. The technique. As input data we selected ionofiles with regular GNSS observations of the reference station SULP-on date 1, 2, 3 September and 1, 2, 3 October 2013 at 0, 6, 12, 18 and 23 h The next step was to our choice of satellite data. This information formed in the daily Files Software Trimble Planning. The frequency of such registered user specifies the personal file.