Block Adjustment of Airborne Imagery in Geocentric Orthogonal Coordinate System

Photogrammetric processing in geocentric orthogonal coordinate system have potential superiority with more and more enrichment of multi source images and spatial data. This paper uses tangent orthogonal coordinate system based on the velocity direction of flight line as the reference datum of attitudes, infers and describes the transformation of attitude data in the reference datum, and for the first time builds the airborne optical image collinear equation and bundle adjustment model in geocentric orthogonal coordinate system. An experiment of block adjustment of frame airborne images based on the new model is given at the end of this paper, the result can achieve the similar precision as traditional method, which show that the given method is right and reliable.