Geometric accuracy evaluation of Theos imagery

Abstract

This paper presents the georeferencing performance of the imagery from the Thailand Earth Observation System satellite (THEOS) using a generic sensor model developed at the Cooperative Research Centre for Spatial Information (CRCSI), Australia. THEOS provides 2m resolution imagery worldwide together with camera parameters, orbit and attitude data. An assessment of the planimetric accuracy of georeferencing from THEOS imagery, both for single scenes and image strips, has been carried out within a 25 x 110km test field area in Australia, in which a dense array of GPS-surveyed points were established. The test imagery comprised a strip of five images collected within the same orbit. The generic..