The interpolation problem in GPS-supported aerial triangulation

This paper gives the results of an investigation into the use of different sampling rates and models for the interpolation of perspective-centre coordinates in GPS-assisted aerial triangulation. Industry-standard models and rigorous signal reconstruction-filtering have been implemented for two large-scale photogrammetric blocks. GPS sampling rate was found to have the Most impact on bundle adjustment results in terms of the perspective-centre residuals. However, the accuracy of object-space point coordinates was found to be invariant to both GPS sampling rate and interpolation method.