Testing of altitude accuracy of GIS GPS devices

This work is about testing altitude accuracy of GIS GPS receivers Trimble Juno SC and Trimble GeoExplorer 6000 GeoXH. The introduction is dealing with general topics connected with satellite navigation and describes individual global navigation satellite systems. A Separate chapter is dedicated to factors influencing surveying accuracy. The Main section of this work consists of gathering and processing of data gathered from surveying at point with known coordinates and from surveying of an appropriately chosen track. Followed by measurement of chosen leveling program using technical leveling, surveying by GIS GPS receivers was made at chosen points of this leveling program, data gathered from both methods were compared. The results are shown in graphical outputs, where their individual accuracy and suitability for chosen surveying jobs is being discussed