Flight Test Results of an Integrated Gps/ins/pseudolite System for Aircraft Precision Approach and Landing

The Satellite Navigation and Positioning Group (SNAP) at the University of New South Wales and the DSO National Laboratories, Singapore, have jointly collaborated in the development of an integrated GPS, INS and pseudolite system for aircraft precision approach and landing. Flight tests were carried out in April/May 2003 to study the overall performance, and associated limitations, of such an integrated system. This paper describes the test results, which indicate that: (a) there is significant geometry enhancement in the vertical component, resulting in an improvement in the aircraft’s altitude determination; and (b) notable reliability improvement (especially with respect to the external reliability of the vertical component determination).