Impact of evil waveforms on GBAS performance
| Autor: | Christophe Macabiau, Eric Chatre |
|---|---|
| Přispěvatelé: | Ecole Nationale de l'Aviation Civile (ENAC), Direction Générale de l'Aviation Civile (DGAC) |
| Rok vydání: | 2002 |
| Předmět: |
Engineering
signal generators 010504 meteorology & atmospheric sciences condition monitoring 010502 geochemistry & geophysics GPS signals 01 natural sciences Signal satellites [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing Global Positioning System Electronic engineering Waveform signal processing 0105 earth and related environmental sciences Signal processing Signal generator business.industry Ranging filtering Modulation distortion tracking loops business measurement errors [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing modulation coding |
| Zdroj: | IEEE PLANS 2000, Position Location and Navigation Symposium IEEE PLANS 2000, Position Location and Navigation Symposium, Mar 2000, San Diego, United States. pp 22-29, ⟨10.1109/PLANS.2000.838279⟩ |
| Popis: | International audience; Several types of failures can occur in the GPS satellites that transmit the ranging signals to the users. Among them, a specific type of failure in the signal generation process aboard the satellite may result in an anomalous waveform being transmitted, called an "evil waveform". Evil waveforms are GPS signals that have a distorted PRN code modulation waveform. The main impact is a rupture of the symmetry of the cross-correlation peak inside the tracking channel, therefore inducing a different measurement error for two receivers that would not have the same loops architecture. As a consequence, there is a potential for evil waveforms to induce large tracking errors of differential systems if left undetected. This paper aims at providing some insight on the behavior of specific ground monitoring techniques that were proposed for implementation. |
| Databáze: | OpenAIRE |
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