Method and apparatus for determining a parameter of attitude of

Details Method and apparatus for determining a parameter of attitude of Method and apparatus for determining a parameter of attitude of

1981-08-05

1984-09-18

Sikes, William L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356363, G01B 902

Patent

active

044720548

ABSTRACT:
In order to determine, from a distance, at least one angle characteristic of the attitude of a body, the body is provided with an optical system comprising an interferential filter and a retroreflector. The body is aimed at with an incident beam of polychromatic light which is sent back by the optical system as a beam the light of which has a frequency spectrum which is characteristic of the angle of incidence of the beam sent on the optical system. Various means for analyzing this frequency spectrum are provided in order to derive the desired angular information therefrom. In particular an interferential filter may be used which is identical with that mounted on the body sighted.

REFERENCES:
patent: 3824018 (1974-07-01), Crane, Jr.
patent: 3914055 (1975-10-01), Wolga et al.
patent: 4227807 (1980-10-01), Pond et al.
patent: 4355898 (1982-10-01), Dakin

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