An approach to reliable rapid static GNSS surveying

This paper presents a methodology for reliable surveying and processing of GNSS observations in a rapid static survey conducted in open terrain as well as with the limited availability of satellites. The surveying and data processing technology presented allows reliable determination of coordinates under difficult observation conditions, e.g. in a forest with significant obstacles to satellite signal reception. The test GNSS surveys were conducted in two points with full availability of satellites and a point with a high intensity of obstructions. The test point coordinates were determined by three GNSS receivers positioned simultaneously in line on a special base at a distance of 0.5 m from one another. Given the possible gross errors of the determined baseline coordinates, the simultaneous application of three GPS/GLONASS receivers for a single point allows reliable determination of coordinates even in locations with severe obstructions. Test surveys were conducted using Topcon Hyper Pro receivers and the ASG-EUPOS system network of reference stations. The presented survey and data processing methodology allows users to obtain reliable coordinates with accuracies expressed in centimetres during a rapid static survey session of a few minutes or even just one minute.