Abstract: The pointing of at least two sensors (61, 62) is ensured through a Luneberg lens (50). A first frame (20) pivoting on a support (10), supports in pivoting manner a second frame (30), which can in turn support the lens (50). The second frame (30, 40) supports at least one rail (41) for guiding the sensors in the vicinity of the focal surface of the lens. Control means (90) act on the mount as a function of data concerning the position of satellites to be sighted. They are arranged so as to temporarily stop the sighting of one of the satellites, bring the mount into an opposite position on the focal surface, whilst continually sighting the other satellite, and resume the sighting of both satellites, the two sensors then being in an inverted position on the rail.

Abstract: The present invention relates to a device (1) for positioning a mock-up (2). The device comprises supports (3, 4) suitable for holding the mock-up in a variable position which is controllable in attitude and/or altitude relative to an illumination axis (I-I'). The mock-up is held by two pairs of top wires (6) and by two pairs of bottom wires (7). These four pairs of wires are mounted at their opposite ends on tensioning means (8) fixed to the opposite ends of the supports (3, 4) and intended to adjust the tensions and the lengths of the wires as a function of a desired attitude and/or a desired altitude for the mock-up. The device also includes control means (9) for controlling the angular positions of the supports (3, 4), and cameras connected to processor means for measuring the real position and attitude of the mock-up.