METHOD OF GROUND MAPPING BY AIRBORNE RADAR Russian patent published in 2017 - IPC G01S13/89 

FIELD: radio engineering, communication.

SUBSTANCE: signal is coherently emitted and accumulated during scanning by a beam of antenna diagram near the track line of radar carrier when the beam of antenna diagram, smoothly moving, covers the entire front sector. Coherent accumulation of signals is carried out over the total channel and the difference azimuth channel of antenna, then signal processing of two accumulated signals is carried out, consisting in determining and compensating of phase progression, determining the steepness of signals frequency modulation, allocating signals accumulated to the left and right of track line of ABR carrier, spectrum signals processing, combining signals accumulated to the left and right of carrier track line, after formation of two combined arrays of signal amplitudes, an array of difference azimuth channel amplitudes is subtracted from the array of total channel amplitudes, and then a radar image is formed.

EFFECT: increasing the bearing discrimination near ABR carrier track line.

2 dwg