Method and apparatus for determining the roll angle position of

Details Method and apparatus for determining the roll angle position of Method and apparatus for determining the roll angle position of

1995-05-08

1997-08-26

Buczinski, Stephen C.

Optics: measuring and testing

Angle measuring or angular axial alignment

Relative attitude indication along 3 axes with photodetection

244 313, 3561413, G01B 1126, G01C 100, F41G 700

Patent

active

056615558

ABSTRACT:
A method and apparatus for determining the roll angle position of a rotating flying body (2) relative to a fixed station (1) with the aid of a laser (3) light beam (4, 24) emitted by the fixed station (1) and received by the flying body (2). To determine the roll angle position of the flying body located at an arbitrary position within the guide beam (4) precisely and simply, a phase-coded laser light beam (guide beam) is produced with the aid of an optical element, particularly a holographic optical element (6). This guide beam (14) is then decoded in a receiving apparatus (8) of the flying body by means of a further holographic element (11) that is rigidly connected to the flying body (2). The further holographic element (11) is configured such that maximum brightness or intensity only occurs at the receiving detector (13) if it is located parallel to the holographic element (11) on the side of the laser (3), i.e., non-mirror-symmetric information must be impressed upon the guide beam (4).

REFERENCES:
patent: 4384759 (1983-05-01), Ferrante
patent: 4422601 (1983-12-01), Chavany et al.
patent: 4441669 (1984-04-01), Wich
patent: 4516743 (1985-05-01), Sweeney et al.
patent: 4641801 (1987-02-01), Lynch et al.
patent: 5478028 (1995-12-01), Snyder

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