ORBLIB Generating Navigation Files

Abstract

ORBLIB is a Software package that provides an easy way to produce the navigation files required for photogrammetric restitution of spaceborne stereoscopic images. To this extent position data of the spacecraft and attitude data of the camera are transferred along with associated partial derivatives to the files ORBINPBA and ATTINPBA (1) for inclusion in the photogrammetric processing. As a results of the restitution, corrections to the position and attitude data are obtained that reflect the additional navigational information content of the stereo images. Therefore, the ORBLIB package also provides tools for reading the photogrammetric out- put files ORBOUTBA and ATTOUTBA and generates improved position and pointing data. This report describes in detail the concept and operations of the programs and its components in addition to a format description of the interface files.