In the context of the International Test Program for the Navstar Global Positioning System (GPS), managed by the GPS Joint Program Office of the US Department of Defense, the National Aerospace Laboratory (NLR) in The Netherlands has conducted a test program with the GPS receiver 3A. The tests were aimed at the investigation of the suitability of differential P-code GPS for precision-type aircraft approaches, with the emphasis on the available position accuracy. Flight trials were conducted with NLR's Fairchild Metro II research aircraft equipped with the GPS high-dynamics receiver 3A. A second receiver 3A was located at a surveyed position at the airfield, broadcasting the differential GPS corrections via telemetry. In the aircraft the data of the GPS receiver were processed, together with the differential corrections, to produce ILS-like localizer and glide slope deviation signals. These signals were presented to the evaluation pilot on the Primary Flight Display of a programable Electronic Flight Instrument System. The aircraft was equipped with a position reference system that produced post flight a three dimensional aircraft trajectory with an accuracy of a few decimeters near the runway. The flight test program was conducted at Amsterdam Schiphol International Airport using different runways and approach directions. All approaches, approximately 90, were flown manually. Four evaluation pilots participated in the program.
Flight Test Program Using Differential GPS for Approach Guidance
1992
26 pages
Report
Keine Angabe
Englisch