METHOD FOR DETERMINATION OF SPACECRAFT ORBIT WITH EQUIPMENT FOR SHOOTING UNDERLAYING SURFACE Russian patent published in 2020 - IPC B64G3/00 

FIELD: astronautics.

SUBSTANCE: invention relates to methods of tracking spacecraft flight. Method involves determining, based on orthorectified images of the underlying surface (US) of geographical coordinates of points of the regions of said US, over which the spacecraft is located. Pictures are taken with consecutively changing signs of the angle of vision of the filming equipment. Determining sets of points, with given accuracy being cone vertexes, angle of solution of which is equal to filed equipment visual field angle, and the axis and generatrices pass through the US points corresponding to the specified points of the image. Combination of points is determined, according to one of each set, through which lines pass, the sum of angles between which is minimum. After a specified time, the actions are repeated. Current orbit of the spacecraft is received with a predicted line passing at moments of images with given accuracy through the found combinations of points.

EFFECT: possibility of determining spacecraft orbit parameters outside trajectory measurements zones.

1 cl, 2 dwg