Military Communications and Information Technology: A Trusted ...

Chapter 1: Concepts and Solutions for Communications and Information Systems
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• nodes of groups of people acting directly with consequences of disasters
or designed plans,
• nodes which are responsible for planning and giving the orders to nodes
lower in hierarchy.
Figure 3. Nodes structure in crisis management
Because the most important thing in this type of information management
systems is fast and reliable data delivery, proper communication medium should
be selected. Such medium has to assure good quality and, usually, bandwidth.
Among all kinds of radio means there should be pointed out that because of commonness,
great coverage and possibility to easily add mobile ad hoc points, good
option are cellular networks (for example Code Division Multiple Access – CDMA
technology [11]).
Groups of people should be able to use mobile hardware designed to resist difficult
weather conditions and physical damage in spite of incidental falls. Hardware
should be equipped with support for preselected communication medium. That
is why in Crisis Management JASMINE System there exist two types of mobile terminals,
equipped with CDMA modems: T1000 and T4 (which is the smaller one).
Furthermore, some users will be able to use dedicated device called Rescuer TAG,
which is capable to send messages, about position of different accidents, to the system.
Technical specification of dedicated hardware equipment (Fig. 4) includes many
features. The most important ones are low weight, small LCD, touchable screens,