Multilateration and automatic dependent surveillance – broadcast systems are used in air traffic control to detect, locate and identify cooperating aircraft using signals emitted by airborne transponders and received by dedicated ground stations. In areas with a high traffic density, these stations may receive simultaneously several superimposed signals. Present operational systems use only one receiving channel connected to a non-directional antenna. When the received replies are superimposed, that is, ‘garbled’, their detection and/or decoding are severely affected in nowadays equipment. The aim of this study is to transform the single channel problem into a multiple channels problem in order to solve it using specific knowledge about the Mode S signals. In fact, the multiple channels problem is a typical signals separation problem applied to Mode S mixture for which several algorithms already exist. The authors’ algorithm, named projection algorithm (PA) single antenna, is based on the existing PA and can be easily implemented on existing receiving stations. The effectiveness of their method is demonstrated using real data collected from their experimental receiver.

Galati, G., Petrochilos, N., Piracci, E.g. (2015). Degarbling Mode S replies received in single channel stations with a digital incremental improvement. IET RADAR, SONAR & NAVIGATION, 9(6), 681-691 [10.1049/iet-rsn.2014.0335].

Degarbling Mode S replies received in single channel stations with a digital incremental improvement

GALATI, GASPARE;PIRACCI, EMILIO GIUSEPPE
2015-01-01

Abstract

Multilateration and automatic dependent surveillance – broadcast systems are used in air traffic control to detect, locate and identify cooperating aircraft using signals emitted by airborne transponders and received by dedicated ground stations. In areas with a high traffic density, these stations may receive simultaneously several superimposed signals. Present operational systems use only one receiving channel connected to a non-directional antenna. When the received replies are superimposed, that is, ‘garbled’, their detection and/or decoding are severely affected in nowadays equipment. The aim of this study is to transform the single channel problem into a multiple channels problem in order to solve it using specific knowledge about the Mode S signals. In fact, the multiple channels problem is a typical signals separation problem applied to Mode S mixture for which several algorithms already exist. The authors’ algorithm, named projection algorithm (PA) single antenna, is based on the existing PA and can be easily implemented on existing receiving stations. The effectiveness of their method is demonstrated using real data collected from their experimental receiver.
2015
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-INF/03 - TELECOMUNICAZIONI
English
Con Impact Factor ISI
Radar; Mode S; Multilateration;
Galati, G., Petrochilos, N., Piracci, E.g. (2015). Degarbling Mode S replies received in single channel stations with a digital incremental improvement. IET RADAR, SONAR & NAVIGATION, 9(6), 681-691 [10.1049/iet-rsn.2014.0335].
Galati, G; Petrochilos, N; Piracci, Eg
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/114328
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