Author(s)

J.Q. Jin & J. Allan

Abstract

In excess of 100 MHz bandwidth is promised from new communications technology suitable for the railway environment. The bandwidth can be used for vital, non-vital or a mixture of the traditional types of communication security as well as intermediate categories. This and associated advantages opens up a number of possibilities for new applications for track to train communications and indeed direct train to train communications. A formal system engineering methodology has been applied to investigate these new applications. The emphasis has been particularly on requirements development, analysis and synthesis. A description is given of the partitioning of the requirements database into a

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