PHOTOGRAMMETRY AND KINEMATIC GPS - RESULTS OF A HIGH-ACCURACY TEST

Aerial triangulation with kinematic GPS support has become an importan t issue during the past few years. This article reports on the results of a research project that was aimed at demonstrating the valuable co ntributions that kinematic GPS can make to photogrammetric bundle tria ngulation. An accuracy of mu(xy) = 5 cm in planimetry and mu(z) = 8 cm in height was obtained for ground check points from an image scale of 1:10,000 with only four control points in the block corners. This acc uracy corresponds to the values which can be obtained with a large num ber of ground control points (bridging distance i = 2b) but without in tegration of kinematic GPS data. It is argued that in this project the so-called GPS ''drift'' parameters are cumulative effects of errors i n the interior orientation of the metric camera and residual errors fr om coordinate transformations.