METHOD OF MEASUREMENT OF THE VECTOR OF VELOCITY OF LOCAL REFLECTORS IN THE SPACE SAR Russian patent published in 2018 - IPC G01S13/90 

FIELD: radar ranging and radio navigation.

SUBSTANCE: invention relates to the radiolocation of the Earth's surface from spacecrafts and can be used for the rapid assessment of ship conditions from space with the determination of the location and speed of ships without resorting to a more complex (interference) method. Essence of the method consists in determining the velocity vector, which is achieved by comparing the coordinates of the reflector in two luminance images, using the dependence of these coordinates on the time delay of sighting in spaced beams and the azimuthal shift of the reflector mark, proportional to the projection of its radial velocity on the direction of the beam. Accuracy of measurement of both components of the velocity in this case depends solely on the accuracy of alignment and navigational binding of the coordinates of the two images to the coordinates of the terrain and practically does not depend on such factors as the speed of the apparatus and the rotation speed of the Earth (varying in latitude).

EFFECT: improvement of the measurement accuracy.

1 cl, 3 dwg