Position Reference System for the Fokker 70

摘要

With the flight testing of the Fokker 70 prototype expected to start in themiddle of 1993, the National Aerospace Laboratory (NLR) of the Netherlands is developing, under contract with the Netherlands Agency for Aerospace Programs (NIVR), a Positioning Reference System (PRS) based on global positioning system (GPS) technology. The system will cover three different accuracy classes, ranging from 50-100 meters up to 15 cm three-dimensional position accuracy. For the medium accuracy class of flight tests, differential code range GPS integrated with an Inertial Reference System (IRS) will be used, based in the complementary characteristics of the two systems. Without the differential GPS corrections this set up will be used for the low accuracy class. For the high accuracy class, differential carrier range GPS measurements, integrated with an IRS will be used. This paper contains a technical description of the position reference system, with emphasis on integration with an IRS (Kalman filter description, error modeling).