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Protection Level Calculation Using Measurement Residuals:Theory and Results
Protection Level Calculation Measurement Residuals
2015/6/26
In safety-of-life applications of satellite navigation, the Protection Level (PL) equation translates what is known about the pseudorange errors into a reliable limit on the positioning error. The cur...
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...
Vertical Protection Level Equations for Dual Frequency SBAS
Vertical Protection Level Equations Dual Frequency SBAS
2015/6/25
The L1-only Satellite-Based Augmentation System (SBAS) Minimum Operational Performance Standards (MOPS) were developed long before any SBASs were certified for operation.
Optimization of a Vertical Protection Level Equation for Dual Frequency SBAS
Optimization Vertical Protection Level Equation Dual Frequency SBAS
2015/6/24
The advent of dual frequency Satellite Based Augmentation Systems (SBAS) will allow the aviation community to address some of the shortcomings of the current SBAS Minimum Operational Performance Stand...
BTS Releases Third-Quarter 2006 Air Travel Price Index (ATPI);Air Fare Index Reaches Highest Third-Quarter Level in Index’s 11 Years;Top Increase in Cincinnati, Top Decrease in Lihue (Kauai)
Air Travel Price Index
2007/1/25
January 24, 2007，The Air Travel Price Index (ATPI) for the third quarter of 2006 reached the highest third- quarter level recorded in the 11-year period measured by the index, 7.5 percent higher than ...