ENVIRONMENTAL MONITORING METHOD Russian patent published in 2011 - IPC G01V3/16 G01W1/06 G01S5/00 

FIELD: physics.

SUBSTANCE: disclosed method is characterised by that signals of a source of radio-frequency emissions from an environmental or natural disaster are received on five antennae. The received signals are undergo frequency conversion using frequency ω_r1 of a first heterodyne. Voltage of the first intermediate frequency is picked up. When detecting a signal of a source of radio-frequency emissions from an environmental or natural disaster, tuning of the frequency ω_r1 of the first heterodyne is stopped temporarily. Voltage of the first intermediate frequency of the measurement channel undergoes repeated frequency conversion using the stable frequency ω_r2 of a second heterodyne. The main parametres of the detected signals are analysed and recorded. Voltage of the second intermediate frequency of the measurement channel is multiplied by the voltage of the first intermediate frequency of direction-finding channels. Phase-modulated voltage values are picked up at stable frequency ω_r2 of the second heterodyne. Low frequency voltage values are picked up at frequency Ω of rotation of the helicopter rotor. The azimuth α and the angle of elevation β of the source of radio-frequency emissions from the environmental or natural disaster are measured.

EFFECT: broader functionalities of the method by detecting and determining coordinates of the source of radio-frequency emissions.

2 dwg, 1 tbl