METHOD FOR DETECTION AND AZIMUTH DIRECTION FINDING OF GROUND-BASED RADIO-FREQUENCY SOURCES FROM A FLIGHT-LIFTING MEANS Russian patent published in 2020 - IPC G01S5/04 G01S7/292 

FIELD: radio equipment.

SUBSTANCE: invention relates to radio engineering and can be used in multichannel monopulse detectors-direction finders (DDF) of radio monitoring systems for determination of azimuth and elevation angle to radio emission source (RES) from flight-lifting means (FLM). Technical result is achieved by using navigation information on antenna array (AA) angles and converting non-direction-finding results, and the direction characteristics AA of the associated moving coordinate system (CS) in the fixed CS associated with the Earth. This makes it possible to carry out direction finding and search for azimuth on RES in curvilinear cut of two-dimensional azimuth-elevation direction-finding relief, corresponding to evolution of orientation of direction vector of arrival of radio wave in azimuthal circle at arbitrary orientation AA, arranged on FLM. Due to such accounting of information on FLM orientation, higher accuracy and reliability of direction finding of ground-based RESs. Besides, according to the proposed method, the "reliability" evaluation of direction-finding RES provides the required selection of direction-finding results by reliability factor with increase in accuracy and reliability of direction finding of RES with FLM in real conditions. Method takes into account the presence of inter-channel correlation of received spectral components of radio signals, caused by presence in real conditions of external interference, is operable under conditions of a priori unknown interference intensity in different spatial receiving channels.

EFFECT: high efficiency of azimuth direction finding of ground-based RESs with arbitrarily oriented FLM.

1 cl, 6 dwg