Four basic error sources exist for residual pseudo-range errors in a single frequency differential GPS system for ground based augmentation (GBAS): signal multipath, increased receiver noise (carrier-to-noise density ratios (C/N0)) due to interference, residual differential troposphere error, and the error induced by ionosphere gradients. Without restricting ourselves to classical Gaussian overbounding, we combine their probability density functions (pdfs) to a total pseudo-range error distribution. This distribution is propagated through the GBAS Hatch filter and then mapped into the position domain using a worst case (selected by maximum vertical dilution of precision (VDOP)) of a full 31 satellite constellation with the two most critical satellites failed observed at Braunschweig Airport, Germany. Our calculations yield a significant reduction amounting to 46% of the position domain error at the 1.5 × 10-7 integrity risk level when compared with the classical Gaussian overbounding approach.
Non-Gaussian Error Modeling for GBAS Integrity Assessment
IEEE Transactions on Aerospace and Electronic Systems ; 48 , 1 ; 693-706
2012-01-01
1524253 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Novel Integrity Concept for CAT III Precision Approaches and Taxiing: Extended GBAS (E-GBAS)
Online Contents | 2011
|A New Integrity Risk Allocation Method for BDS GBAS
British Library Conference Proceedings | 2021
|GBAS Availability Assessment and Modeling of Ionospheric Scintillation Effects
Online Contents | 2016
|Ionosphere Threat Space Model Assessment for GBAS
British Library Conference Proceedings | 2009
|