Comparative statistical analysis of geodetic data obtained by aero photogrammetric and GNSS method

Abstract

In contemporary geodetic works, data obtained by different measurement technologies are often utilized. The numerous research of photogrammetric method accuracy implicates a need for further research. In this paper the authors have presented results of the performed research of coordinates accuracy obtained by aero photogrammetric method based on a case study of the industrial zone in Požega. A sample for the research was a difference of coordinates obtained by the aero photogrammetric and GNSS methods of 30 ground control points. The research was performed by statistical methods which are commonly utilized in geodesy. Obtained results justified this research even performed on the relatively small size of samples. Obtained accuracy is of the centimetre order which could be considered as a very good result related to research in contemporary literature.

Keywords

• normal distribution
• hypotheses testing
• correlation
• gnss
• aero photogrammetry
• terrestrial geodetic methods