Evaluation of GPS L5 and Galileo E1 and E5a Performance for Future Multifrequency and Multiconstellation GBAS
| Autor: | Sam Pullen, Mihaela-Simona Circiu, Daniel Gerbeth, Michael Meurer, Matteo Sgammini, Christoph Enneking, Michael Felux, Felix Antreich, Steffen Thölert, Mariano Vergara |
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| Rok vydání: | 2017 |
| Předmět: |
010504 meteorology & atmospheric sciences
GNSS augmentation Computer science Noise (signal processing) business.industry Aerospace Engineering 020206 networking & telecommunications 02 engineering and technology GPS signals 01 natural sciences GPS disciplined oscillator symbols.namesake Physics::Space Physics 0202 electrical engineering electronic engineering information engineering Global Positioning System Galileo (satellite navigation) symbols Electrical and Electronic Engineering Antenna (radio) business Multipath propagation 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | Navigation. 64:149-163 |
| ISSN: | 0028-1522 |
| DOI: | 10.1002/navi.181 |
| Popis: | This paper presents the performance analysis of signals from the Galileo satellites in the E1 and E5a frequency bands and GPS L5 signals as measured by DLR’s experimental ground-based augmentation system. The results show that the raw noise and multipath level of Galileo signals and of the GPS L5 signals are smaller than that of GPS L1. The new signals are also less sensitive to the choice of carrier-smoothing time constant. Furthermore, the inter-frequency biases that affect dual-frequency processing are investigated. These biases differ between satellites and depend on satellite and receiver hardware, but they can be determined a priori. With known receiver and antenna configurations, it is possible to correct for these biases. A residual uncertainty associated with the bias correction has to be taken into account. This can be modeled as part of the ground and airborne bounding standard deviations (spr_gnd and spr_air) used in GBAS processing. |
| Databáze: | OpenAIRE |
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