Kontrola kvality síťového řešení CZEPOS =Quality control of the CZEPOS Net Solution

Abstract

Czech network of permanent stations CZEPOS forms part of the geodetic control in the Czech Republic being administered and operated by the Land Survey Office. To improve quality of provided CZEPOS products and services continuous control of net solution by means of time lines analysis of coordinates changes of network stations is being performed. Input data for analyses are hour solutions of station coordinates. Analysis objectives were in particular detection of the frequency of unavailability of the network solution and stability verification of single stations. The results showed downtrend in the frequency of unavailability of the network solution. Stability control at some stations discovered yearly periodic motion with amplitude of 2mm. Time lines at disposal are too short so far to evaluate stations linear motion. Stations stability is being monitored continuously