Monitoring of Structures and Infrastructures by Low-Cost GNSS Receivers

This paper deals with the problem of geodetic monitoring structures by means permanent GNSS stations, a focus on specific project bridge small network three stations. What is peculiar about this that stations used are endowed low-cost receivers, and data treated continuously cover time-span more than 4 years. The service GeoGuard, at work project, has proved to be reliable in terms both hardware software. results display almost uniform accuracy less 1 mm level for daily adjusted coordinates ∼1–2 hourly solutions. After short review basics positioning phase observations, error estimated discussed detail, procedure warning/alarm described. experience software employed then presented together results, which mostly displayed graphical form few tables.