Intercepted RF electromagnetic signals provide a good long-ranged source of information on the motions and activities of people, vehicles, installations and organisations. For those emissions that are detected, traditional tracking methods are used to associate the separate low level interceptions and average their characteristics to obtain tracks of the source location and characteristic patterns of the emissions. The Study Group was asked to provide a prediction of the number of underlying source platforms and the association between the emissions and platforms.

The Study Group applied a graph theoretic approach on a single case with 5 platforms and approximately 30 tracks. The platform assignment algorithm was run to find the minimum number of platforms required and assign the tracks to the platforms. The algorithm correctly found the number of platforms but the assignment of the tracks to the platforms was very problem dependent.

Problem presented by
Neil Cade and Neil Brearley, SELEX Galileo Ltd

Study Group contributors
Tristram Armour (Industrial Mathematics KTN)
Misaina Andrianjafinandrasana (University of Witwatersrand)
David Barton (University of Bristol)
John Billingham (University of Nottingham)
David Sibley (University of Bath)
Florian Theil (University of Warwick)
Nicholai Peremezhney (University of Warwick)
Switalski Przemyslaw (Uniwersytet Warszawski)
Tom Ranner (University of Warwick)

related resources:

»	Emitter-Platform Association
	Study group report 2010: Emitter-platform association (Selex Galileo)

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