AIRCRAFT ADS-B OUT PERFORMANCE ANALYSIS: ACCURACY, INTEGRITY AND AVAILABILITY
Date
2023-03
Journal Title
Journal ISSN
Volume Title
Publisher
IOE Pulchowk Campus
Abstract
Automatic Dependent Surveillance - Broadcast (ADS-B) is an avionic in the aircraft
that periodically broadcasts state vector estimates and additional information of the
aircraft to the traffic control centers and other nearby airspace users. The sate vector
estimates are based on the navigation system such as the GNSS and multitude of avionic
sensors, which means that the quality of ADS-B broadcast is highly based on the quality
of aircraft navigation and communication systems. This project aims to analyze the
performances of relevant matrix such as the navigation accuracy, integrity, source
integrity level and avionics system assurance level. Besides, the project also focuses on
characterizing the quality and pattern in the ADSB data and identifying any errors or
anomalies coming from potential failure modes. Statistical analysis is used to correlate
the data with Required Navigation Performance (RNP) Specification, flight levels and
flight phases. As the global uptake of the ADSB in the airspace is ever increasing, it is
important to understand the quality and performance of the ADSB surveillance in
various airspace where aircraft types and supporting ATM/CNS services are different.
For this reason, the data retrieved by installing a low cost ADSB ground station in the
Flight Information Region in Kathmandu, Nepal is compared against highly advanced
airspace in Munich, Germany. Based on the mechanisms developed for ADSB data
retrieval, monitoring, performance analysis and anomalies detection, the project
envisages to develop a low-cost product prototype which offers the features to support
aviation stakeholders in the decision-making process.
Description
ADS-B stands for Automatic Dependent Surveillance Broadcast. The term
“Automatic” means information is transmitted on a regular basis, with no pilot or
operator involvement required. “Dependent” means position and velocity vectors are
derived from the Global Positioning System (GPS) or another suitable Navigation
System. Surveillance means it adapts technique for determining the three-dimensional
position and identity of aircraft, vehicles, or other assets
Keywords
ADS-B, low-cost product