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

Content Provider	IET Digital Library
Author	Galati, Gaspare Petrochilos, Nicolas Piracci, Emilio G.
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.
Starting Page	681
Ending Page	691
Page Count	11
ISSN	17518784
Volume Number	9
e-ISSN	17518792
Issue Number	Issue 6, Jul (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/9/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2014.0335
Journal	IET Radar, Sonar & Navigation
Publisher Date	2015-02-11
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Air Traffic Control Airborne Transponders Aircraft Aircraft Antenna Aircraft Communication Automatic Dependent Surveillance-broadcast System Code Decoding Dedicated Ground Stations Degarbling Mode S Replies Digital Incremental Improvement Experimental Receiver High Traffic Density Mobile Radio System Mode S Signal Multilateration Multiple Channel Problem Nondirectional Antenna PA Single Antenna Projection Algorithm Receiving Channel Receiving Stations Signal Detection Signal Separation Problem Single Channel Problem Single Channel Stations Source Separation Superimposed Signal Telecommunication Traffic Transponders
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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