摘要: |
The Global Positioning System (GPS) is augmented with reference receivers, at known locations at an airport, and a data broadcast system to improve the accuracy and integrity of GPS to enable aircraft precision approach, landing, and surface movement guidance. The resulting system is referred to as the Local Area Augmentation System (LAAS) Ground Facility (LGF). In support of the development of the LAAS and other satellite based services, several project were performed under Aviation Research Grant 92-G- 0023. These projects can be divided into four major research areas: Development and flight testing of prototype LAAS ground and airborne equipment, including high-accuracy simulator testing, analyses of integrity, continuity and availability, and characterization and mitigation of multipath error Integration of GPS with a low-cost Inertial Measurement Unit; LAAS augmentation with an on-airport ranging pseudolite; Fault detection and exclusion techniques. |