METHOD OF TRANSMITTING RADIO SIGNALS USING RADIO-FREQUENCY SOURCES Russian patent published in 2011 - IPC H04W64/00 

FIELD: physics.

SUBSTANCE: invention relates to methods of transmitting radio signals using radio-frequency sources located on objects, including mobile objects, in a form which allows simultaneous multiple access, and reception thereof by a ground-based three-centre reception system and can be used primarily for unambiguous determination of spatial coordinates and other characteristics of radio-frequency sources, operatively linked to their coordinates, in information management radio systems for various purposes, including radio complexes of aircraft navigation systems. At reception centres, two antennae, a top and a bottom antenna at each centre, record time instances for receiving radio signals from the radio-frequency sources, wherein phase centres of top and bottom antennae lie in a certain manner. Spatial coordinates are determined from disclosed simple expressions which depend on the average values of repeatedly measured differences between reception times of corresponding radio signals.

EFFECT: possibility of monitoring movement of objects - radio-frequency sources - using ground-based equipment, simultaneous servicing of several radio-frequency sources, efficient use of communication resources.

5 cl, 5 dwg