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Estimation of ICAO Threat Model Parameters For Operational GPS Satellites
Estimation ICAO Threat Model Parameters GPS Satellites
2015/6/26
The ICAO Second Order Step threat model defines a class of signal deformations that present a potential integrity threat to GPS-based aircraft landing systems such as the Local Area Augmentation...
Ionosphere Threat to LAAS: Updated Model,User Impact,and Mitigations
Ionosphere Threat LAAS Updated Model
2015/6/26
Several severe ionosphere storms have occurred in recent years that tripped the WAAS storm detector and caused partial WAAS service shutdowns. Under extreme conditions, these spatial gradients can thr...
Ionospheric Threat Mitigation by Geometry Screening in Ground-Based Augmentation Systems
Ionospheric Geometry Screening Ground-Based Augmentation Systems
2015/6/24
Large spatial variations in ionospheric delay of Global Navigation Satellite System signals observed during severe ionospheric storms pose potential threats to the integrity of the Ground-Based Augmen...