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 four-centre reception system and can be used primarily to determine 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. Antennae at reception centres, each reception centre having one antenna, record time instances for receiving radio signals from a radio-frequency source, wherein phase centres of the 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. The method enables to monitor movement of objects - radio-frequency sources - using ground-based equipment.

EFFECT: high efficiency of transmitting radio signals.

2 cl, 4 dwg