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Ionosphere Monitoring Methodology for Hybrid Dual-Frequency LAAS
Ionosphere Monitoring Methodology Hybrid Dual-Frequency LAAS
2015/6/26
Strong ionosphere storms are a potential threat for the Local Area Augmentation System (LAAS). During these storms,very large spatial gradients of ionosphere delays might cause significant errors in u...
Performance of Hybrid Positioning System Combining GPS and Television Signals
Performance Hybrid Positioning System Combining GPS Television Signals
2015/6/25
In spite of the global coverage and the penetration into a daily life of GPS (global positioning system), GPS receivers have not been able to overcome the critical weakness of a GPS signal in indoor a...
Hybrid APNT: Terrestrial Radionavigation to Support Future Aviation Needs
Hybrid APNT Terrestrial Radionavigation Support Future Aviation Needs
2015/6/24
The Federal Aviation Administration (FAA) AlternativePositioning Navigation & Timing (APNT) program is developing and examining solutions to provide terrestrial based radio-navigation capability that ...