METHOD TO DETERMINE RADIO-FREQUENCY RADIATION SOURCE Russian patent published in 2009 - IPC G01S5/12 

FIELD: instrument making.

SUBSTANCE: proposed method of determining location of radio-frequency radiation source (RRS) relates to passive radio control systems. This method comprises preliminary delivery of three cartridges into supposed RRS location. Note here that aforesaid delivery is carried out by launching three carriers, each carrying one cartridge comprising navigation receiver and transceiver. The latter comprises panoramic receiver and signal parametre transmitter. After retention in soil, navigation receiver and transceiver are automatically, or by "start" signal, actuated simultaneously. The navigation receiver signals allow determining coordinates of the location of each carrier. Every transceiver incorporating aforesaid panoramic receiver searches RRS signals in preset frequency range. RRS signal detected, it is digitised and transmitted by transceiver, via repeater satellite, to radio control station for RRS location to be determined relative to navigation receiver coordinates.

EFFECT: higher accuracy of locating RRS signals in hard-to-reach areas.

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