METHOD FOR SCANNING OBSERVATION OF A CELESTIAL BODY AND MEASUREMENT OF AN ANGULAR SPEED OF A SPATIAL VEHICLE, OBSERVATION SYSTEM FOR ITS IMPLEMENTATION, AND SPATIAL VEHICLE COMPRISING SAME

摘要

P Method of observation by scanning a celestial body T from a spacecraft S comprising a scanning observation system with reference to a scanning axis characterized in that two signals are formed successively A, B corresponding to the scanning, in the same direction of travel of the same strip of ground BT, 17 in each of these signals is detected a characteristic transition A1, B1 representative of the same characteristic point of this strip on the ground, notes 18 the relative position of these transitions in these signals, and a possible omega angular speed of the spacecraft is determined from a possible difference between these relative positions, taking account of the time difference separating the instants when each of these transitions appeared in said signals. /P