G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 17/08 (2006.01) G01C 3/26 (2006.01) G01S 17/02 (2006.01) G02B 5/122 (2006.01)
Patent
CA 2063893
- 20 - TITLE OF THE INVENTION Long range laser ranging device ABSTRACT OF THE DISCLOSURE A high speed laser ranging device comprises a transmitter/receiver unit (30) and a target including a retroreflector (11) adapted to receive a laser pulse (Ii) transmitted by this unit and to return it parallel to itself. This transmitter/receiver unit travels, with respect to the target, along a relative path with an overall relative velocity V, and normal to an instantaneous line joining it to the target, with a transverse relative velocity vt which, on average, is of the order of at least 1 km/sec. This retroreflector (11) has a cube corner shape with three reflecting plane faces, two of which are normal to the third one, and forming between each other a dihedral angle (71) referred to as the "corrected dihedral angle", differing from 90° by a deviation value .epsilon. at least equal to one arcsecond; this "corrected dihedral angle" is contained within a plane (P) passing through the axis (?) of the cube corner and is at least approximately normal to the average orientation of the transverse relative velocity V within the field of view (C) of the cube corner and the deviation .epsilon. ranges between the minimum and maximum values of vt/(c.sin.THETA.), in radians, within this field of view, where .THETA. is the angle between said instantaneous line and the corrected dihedral angle, and where C is the speed of light. (fig. 4).
Lund Gleen
Renault Herve
Aerospatiale Societe Nationale Industrielle
Lund Gleen
Renault Herve
Riches Mckenzie & Herbert Llp
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