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An Integrated GPS/INS/BARO and Radar Altimeter System for Aircraft Precision Approach Landings.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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Currently, the Department of Defense DoD and the commercial airline industry are utilizing the Instrument Landing System ILS during aircraft landings for precision approaches. The replacement system for the aging ILS was thought to he the Microwave Landing System MLS. Instead, use of the Global Positioning System GPS is now thought to be a viable replacement for ILS precision approaches. The majority of current precision landing research has exploited stand-alone GPS receiver techniques. This thesis instead explores the possibilities of using an extended Kalman filter EKF that integrates an Inertial Navigation System INS, GPS, Barometric Altimeter, Pseudolite and Radar Altimeter for aircraft precision approaches. This thesis shows that integrating the INS, GPS, Barometric Altimeter and Radar Altimeter meets Federal Aviation Administration FAA requirements for a Category I precision approach and integrating the INS, GPS, Barometric Altimeter, Radar Altimeter and a single Pseudolite meets FAA requirements for a Category II precision approach.
APPROVED FOR PUBLIC RELEASE