Daniel Gerbeth
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View article: Vertiport Navigation Requirements and Multisensor Architecture Considerations for Urban Air Mobility
Vertiport Navigation Requirements and Multisensor Architecture Considerations for Urban Air Mobility Open
Communication, Navigation and Surveillance (CNS) technologies are key enablers for future safe operation of drones in urban environments. However, the design of navigation technologies for these new applications is more challenging compare…
View article: Local Differential GNSS Augmentation for Integration into Urban Air Mobility
Local Differential GNSS Augmentation for Integration into Urban Air Mobility Open
This paper describes a concept for local GNSS (Global Navigation Satellite System) augmentation derived from the established Ground Based Augmentation System (GBAS) in civil aviation. The aim of this concept is to provide reliable and accu…
View article: L5/E5a-Based Fallback Mode for Dual-Frequency Multi-Constellation GBAS
L5/E5a-Based Fallback Mode for Dual-Frequency Multi-Constellation GBAS Open
The future architecture for Dual-Frequency Multi-Constellation Ground-Based Augmentation Systems (DFMC GBAS), known as GBAS Approach Service Type (GAST) E, is designed to rely on measurements from two frequency bands, specifically L1/E1 an…
View article: Adaptive Airborne Ionospheric Gradient Monitoring for Dual-Frequency GBAS
Adaptive Airborne Ionospheric Gradient Monitoring for Dual-Frequency GBAS Open
This work proposes a new method for detecting ionospheric activity in the context of future dual-frequency Ground Based Augmentation Systems (GBAS). We utilize measurements available to an airborne GBAS user to derive a probability for lar…
View article: Airborne Ionospheric Gradient Monitoring for Dual-Frequency GBAS
Airborne Ionospheric Gradient Monitoring for Dual-Frequency GBAS Open
Certified Ground Based Augmentation Systems (GBAS) as of today operate using only GPS signals in the L1 frequency band to
\nenable precision approach guidance for landing aircraft. Ionospheric activity (i.e., scintillations and/or large ab…
View article: A Secure Broadcast Service for LDACS with an Application to Secure GBAS
A Secure Broadcast Service for LDACS with an Application to Secure GBAS Open
The VHF Data Broadcast (VDB) data link, responsible for transmitting Ground Based Augmentation System (GBAS) corrections from the GBAS ground station to the aircraft, is one major bottleneck for the evolution and security of GBAS. It provi…
View article: Flight Trial Demonstration of Secure GBAS via the L-band Digital Aeronautical Communications System (LDACS)
Flight Trial Demonstration of Secure GBAS via the L-band Digital Aeronautical Communications System (LDACS) Open
The Ground Based Augmentation System (GBAS) is the cornerstone for enabling automated landings without the Instrument Landing System (ILS). Currently GBAS is evolving to GAST-D for CAT III landings. This extends GBAS via the use of multipl…
View article: Network‐based ionospheric gradient monitoring to support GBAS
Network‐based ionospheric gradient monitoring to support GBAS Open
Large ionospheric gradients acting between a Ground Based Augmentation System (GBAS) reference station and an aircraft on approach could lead to hazardous position errors if undetected. Current GBAS stations provide solutions against this …
View article: Detection of GNSS Multipath with Time-Differenced Code-Minus-Carrier for Land-Based Applications
Detection of GNSS Multipath with Time-Differenced Code-Minus-Carrier for Land-Based Applications Open
Ground transportation systems demand accurate and robust localization functions. Satellite navigation is considered a key element in those systems, but its position determination can be highly corrupted in urban environments because of the…
View article: ERSAT GGC. ERTMS on SATELLITE Galileo Game Changer: Deliverable D4.5 - Process Execution Report
ERSAT GGC. ERTMS on SATELLITE Galileo Game Changer: Deliverable D4.5 - Process Execution Report Open
This is the deliverable D4.5 Process Execution Report of the ERSAT GGC project. This document reports the execution of the track area classification process developed during the work package WP4 Track Survey and Track Classification along …
View article: Network-Based Ionospheric Gradient Monitoring to Support GBAS
Network-Based Ionospheric Gradient Monitoring to Support GBAS Open
Ionospheric anomalies, like large ionospheric gradients, might produce a difference between the ionospheric error experienced bythe Ground Based Augmentation System (GBAS) reference station and the aircraft on approach. This ionospheric de…
View article: Satellite selection in the context of an operational GBAS
Satellite selection in the context of an operational GBAS Open
When incorporating multiple constellations into future ground based augmentation systems (GBAS), a problem with limited VDB (VHF data broadcast) capacity might arise. Furthermore, the number of airborne receiver tracking channels could be …
View article: Future GBAS Processing - Do we need an ionosphere-free mode?
Future GBAS Processing - Do we need an ionosphere-free mode? Open
The Ground Based Augmentation System (GBAS) is a landing system for aircraft. It consists of carefully sited reference receivers at an airport, generating corrections for the navigation signals from Global Navigation Satellite Systems (GNS…
View article: Satellite Selection in the Operational GBAS Context
Satellite Selection in the Operational GBAS Context Open
When incorporating multiple constellations into future Ground Based Augmentation Systems (GBAS) a problem with limited VDB (VHF Data Broadcast) capacity might arise. Apart from that, the number of airborne receiver tracking channels could …
View article: Using a Wide Area Receiver Network to Support GBAS Ionospheric Monitoring
Using a Wide Area Receiver Network to Support GBAS Ionospheric Monitoring Open
Ionospheric anomalies, like ionospheric gradients, might produce a difference between the ionospheric error experienced by the Ground Based Augmentation System (GBAS) reference station and the aircraft on approach. This ionospheric delay d…
View article: Satellite Selection Methodology for Horizontal Navigation and Integrity Algorithms
Satellite Selection Methodology for Horizontal Navigation and Integrity Algorithms Open
With the new upcoming GNSS constellation in the future it might no longer be possible to use all satellites in view for navigation due to limited tracking channels. This is in particular true in the context of Advanced Receiver Autonomous …
View article: Experimental Validation of an Ionospheric Monitoring Scheme for Dual Frequency GBAS
Experimental Validation of an Ionospheric Monitoring Scheme for Dual Frequency GBAS Open
In this paper we describe a method to monitor for a difference in the ionospheric delay observed by a ground station of a Ground Based Augmentation System (GBAS) and an airborne user. In case of detection the affected satellite can be excl…
View article: Nominal Performance of Future Dual Frequency Dual Constellation GBAS
Nominal Performance of Future Dual Frequency Dual Constellation GBAS Open
In this work an overview of numerous possible processing modes in future dual frequency, dual constellation GBAS is given and compared to the current GAST D standard. We discuss the individual error contributions to GBAS protection levels …