METHOD OF DETERMINING SPEED AND DIRECTION OF GROUND TARGET USING SYNTHETIC-APERTURE RADAR Russian patent published in 2012 - IPC G01S13/52 

FIELD: physics.

SUBSTANCE: under the condition of measuring radial speeds of moving targets using synthetic-aperture radar (SAR), and considering that the distance from the aircraft to the ground targets is, as a rule, considerably greater than the flight altitude of the aircraft, the viewing angles of the moving targets are additionally determined on the ground surface at time t₁ and t₂, which correspond to the centres of the first and second aperture synthesis intervals. The full speed and direction of the moving ground target are determined from the corresponding formulae.

EFFECT: determining full speed and direction of a ground target using synthetic-aperture radar mounted on an aircraft in order to provide efficient guidance of other moving objects to a detected moving target.