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The Impact and Mitigation of Ionosphere Anomalies on Ground-Based Augmentation of GNSS
Ionosphere Anomalies Ground-Based Augmentation GNSS
2015/6/25
This paper describes the impact that extreme ionospheric spatial gradients occurring during severe ionosphere storms have on GNSS Ground Based Augmentation Systems (GBAS) and how the U.S. Local Area A...
Availability Impact on GPS Aviation due to Strong Ionospheric Scintillation
Availability Impact GPS Aviation due Strong Ionospheric Scintillation
2015/6/24
Strong ionospheric scintillation due to electron density irregularities inside the ionosphere is commonly observed in the equatorial region during solar maxima. Strong amplitude scintillation causes d...
Targeted Parameter InflationWithin Ground-Based Augmentation Systems to Minimize Anomalous Ionospheric Impact
Parameter Infl ationWithin Ground-Based Augmentation SystemsIonospheric
2015/6/24
Anomalous ionospheric conditions can cause large variations in propagation delays of transionospheric radio waves, such as global navigation satellite system (GNSS) signals. Although very rare, extrem...
The Impact of Uninformed RF Interference on GBAS and Potential Mitigations
Uninformed RF Interference GBAS Potential Mitigations
2015/6/24
RF interference (RFI) has been and will continue to be a significant worry for GNSS users. This paper introduces several different types of RFI, categorizes them based upon the intent (if any) of the ...
Impact of Personal Privacy Devices for WAAS Aviation Users
Impact Personal Privacy Devices WAAS Aviation Users
2015/6/24
Personal privacy devices (PPDs) are low-cost jammers to mask GPS signals, so that the location of the host vehicle is not revealed to other parties. Although it is illegal to use PPDs in the United St...
The Impact of GPS Modernization on Standalone User Performance and Integrity with ARAIM
Impact GPS Modernization Standalone User Performance Integrity ARAIM
2015/6/24
Advanced RAIM, or ARAIM, extends and improves upon the traditional RAIM algorithm to detect and mitigate independent, multiple, and correlated GPS signal faults. While ARAIM depends on multiple redund...
Evaluation of the impact of convolution masks on algorithm to supervise scenery changes at space vehicle integration pads
Scenery supervision Convolution mask Digital image processing
2010/10/25
The Satellite Launch Vehicle developed in Brazil employs a specialized unit at the launch center known as the Movable Integration Tower. On that tower, fixed and movable work floors are installed for ...