1994-04-01

DGPS Precision Landing Simulation 941212

A Differential Global Positioning System precision landing simulation(DGPSPLS) is currently in development in the navigation research group. The simulation provides an integrated airplane systems simulation that includes mathematical modeling of navigation, guidance, control, GPS sensor, and GPS constellation. This tool can be used to develop error budgets in the closed loop nonlinear system; evaluate architectures which combine navigation, control, guidance, and ground station functions; and develop Kalman filters which blend navigation signals from different sources.
Currently, two airplane models are under development: B737 autoland simulation and B757 cruise Flight Management Computer (FMC) simulation. Results on differential correction latency, decision height window statistics, and lateral navigation (LNAV) path tracking performance are included.

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