Dual airport pseudolites backup approach and landing system

Differential GPS is the most promising method to replace the ILS and MLS, however, the integrity and continuity cannot be met all the time. Thus, the backup approach and landing system based on dual airport pseudolites is proposed and correspondent algorithm is studied. The simulation results show that the airport pseudolite signals can effectively correct the INS position errors and provide the landing information met the CATI requirements, hence of great value in practice.