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An Integrity Equation for Use with Space Based Augmentation Systems
Integrity Equation Space Based Augmentation Systems
2015/6/29
In recent years there has been widespread growth in the number of proposed Space Based Augmentation Systems (SBAS). Such systems are being developed by both civil authorities and commercial interests....
Interoperation and Integration of Satellite Based Augmentation Systems
Interoperation Integration Satellite Based Augmentation Systems
2015/6/29
In recent years there has been widespread growth in the independent development of Satellite Based Augmenta tion Systems (SBASs). The Federal Aviation Admini stration’s Wide Area Augmentation System (...
A Real-Time Signal Quality Monitor For GPS Augmentation Systems
Real-Time Signal Quality Monitor GPS Augmentation Systems
2015/6/29
The Local Area Augmentation System (LAAS) and the Wide Area Augmentation System (WAAS) are ground based applications of differential GPS to support aircraft terminal navigation and precision approach.
Practical Signal Quality Monitoring for Augmentation Systems
Practical Signal Quality Monitoring Augmentation Systems
2015/6/26
Signal Quality Monitoring (SQM) algorithms propose to detect anomalous GPS signal distortions primarily through the use of multicorrelator SQM receivers. However, currently no augmentation systems (e....
Formulation of a Time-Varying Maximum Allowable Error for Ground-Based Augmentation Systems
Time-Varying Maximum Allowable Error Ground-Based Augmentation Systems
2015/6/26
Ground-Based Augmentation Systems (GBAS), such as the Federal Aviation Administration’s Local Area Augmentation System (LAAS), ensure integrity by enabling users to compute a conservative navigation e...
L5 Satellite Based Augmentation Systems Protection Level Equations
L5 Satellite Based Augmentation Systems Level Equations
2015/6/25
The current L1 Space Based Augmentation System (SBAS) protection level equations were agreed upon nearly a decade ago. These equations are provided for L1-only users and are based upon covariance prop...
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...
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...
Automated Ionospheric Front Velocity Estimation Algorithm for Ground-Based Augmentation Systems
Automated Ionospheric Velocity Estimation Algorithm Ground-Based Augmentation Systems
2015/6/24
Ionospheric anomalies, which may occur during severe ionospheric storms, could pose integrity threats to Ground-based Augmentation System (GBAS) users [1], [2], [3]. The ionospheric threat for a Local...