The ability to automatically determine location and to provide guidance has become increasingly important over at least the last decade and a half. This trend is likely to continue, if not accelerate, in the land mobile services. Further, various automatic determination of location and guidance (ADLG) techniques promise to play a major role in the Transport Information and Control System (TICS). This Recommendation presents a general overview of ADLG as well as technical information and examples of existing systems.
The ITU Radiocommunication Assembly,
considering
a) that automatic determination of location (ADL) will become an important part of many types of land mobile systems, particularly, but not limited to, dispatch systems and public safety systems; and other types of systems such as tracking of objects or wildlife, and search and rescue;
b) that the introduction of ADL into dispatch type systems can potentially improve spectrum utilization efficiency of communications channels due to reduction in voice traffic related to location and routine information;
c) that one of the most critical elements in dispatch service is the knowledge of current accurate location of every unit in the operational fleet;
d)that costs of running land mobile dispatch operations are increasing;
e)that a considerable part of the voice communications on a radio dispatch channel is location and other routine messages;
f )that ADL integrated with a land mobile radio dispatch system can potentially reduce the cost of dispatch operations;
g)that accurate information on the location of units in a public safety operation can increase the potential of saving lives and protecting property;
h)that ADL techniques may be of great value for non-dispatch type systems which involve tracking the location of an object;
j)that ADL may be used to locate people or vehicles travelling off-road routes or in wilderness, particularly in distress situations;
k)that within the land mobile service there is growing demand for guidance systems;
l)that both ADL and guidance systems may use the same basic techniques for location;
m)that guidance systems can potentially reduce journey costs and improve road safety;
n)that both ADL and guidance techniques may be key elements of Transport Information and Control System (TICS).
ITU-R M.1307-1997 history
1997ITU-R M.1307-1997 Automatic Determination of Location and Guidance in the Land Mobile Services