Fault-tolerant airport vehicle integrated navigation system

Abstract

A fault-tolerant airport vehicle integrated navigation system as a structural part of Advanced Surface Movement Guidance and Control System (A-SMGCS) is presented in the report. The structure of airport vehicle navigation system algorithms, algorithms of complex information processing (CIP), with an increased resistance to internal and external disturbances of unknown origin and realizing functions of detection, control and exclusion of satellite signals from navigation solution, which contain errors of different origin and type are given. Based on this approach integrity monitoring algorithm of navigation system is built. The basis of system is strapdown inertial navigation system (SINS), corrected by global navigation system (GNSS) receiver and odometer dead reckoning system (ORS). Two approaches to improve the reliability of system navigation definitions are offered, one of which is based on the navigation data autonomous integrity monitoring coming from the GNSS receiver and the second — on the use of data from ORS and nonholonomic properties in case of vehicle moving without a slip. Simulation results of airport vehicle navigation system error estimation process and detection of navigation satellites failures are given, confirming developed algorithms operability and efficiency.