ONBOARD DETECTOR WITH COMPENSATION FOR VARIATIONS OF MAGNETIC FIELDS Russian patent published in 2019 - IPC G01S13/86 G01S13/60 G01V3/12 

FIELD: radar ranging.

SUBSTANCE: invention relates to radar ranging, in particular, to devices for detecting signals reflected from objects using aircraft onboard equipment. Technical problem set in the claimed invention consists in creation of a device providing detection of reflected signals from radiation objects, measurement of technical characteristics of signals, recording the magnetic field on sections of the earth's surface and in the atmosphere in order to avoid interference on the path of propagation of radio waves from the transmitter with compensation of variations of magnetic fields to the radiation object and back, taking into account variation of the magnetic field of the Earth, with the necessary compensation corrections, with simultaneous reduction of noise level and sharp reduction of signal spectrum side lobes level.

EFFECT: improved noise immunity, high signal-to-noise ratio, and therefore longer range by increasing potential, structural sensitivity only to "their" signals, reducing the effect of active interference by narrowing the resultant pass band of the receiver, high accuracy of measuring coordinates, increasing the reflecting surface of the object by determining parameters of variations of the magnetic field and compensation in case of errors when receiving probing signals, as well as using a double-frequency probing signal.

5 cl, 11 dwg, 1 tbl