METHOD OF SIDE-LOOKING AIRBORNE RADAR DETERMINATION OF AIRCRAFT DEMOLITION ANGLE Russian patent published in 2018 - IPC G01S13/60 

FIELD: radar location and radio navigation.

SUBSTANCE: invention relates to the field of radar and is intended for use in side-looking airborne radar (SLAR) to determine the angle of the demolition of SLAR aircraft carrier. Method is based on the fact that two independent beams, spaced apart in azimuth, are formed by the SLAR antenna of the radar receiver to receive coherent pulse signals reflected from the earth's surface, in the process of scanning two beams of the earth's surface along the azimuth in the front sector of the survey relative to the construction axis of the SLAR aircraft carrier. In this case, the coherent radiation of the signal is carried out by one beam for transmission, overlapping the beam widths to receive. Received signals are strobed along the range, the analog-to-digital conversion of the signals is performed, the signals received throughout the survey sector coherently accumulate. Then, the time delay between the signals received for each independent beam reflected from the same portion of the earth's surface is determined and compensated, determine, between compensated signals, the phase difference averaged over the range strokes and radiated signal pulses, fix the signals, the value of the averaged phase difference of which changes sign to the opposite, determine the direction to the part of the earth's surface from which these signals were received. Drift angle is defined as the angle between this direction and the construction axis of the SLAR aircraft carrier in the horizontal plane relative to the earth's surface.

EFFECT: increased accuracy due to the determination of the drift angle for the phase of signals reflected from the same site.

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