Method and apparatus for determining a parameter of attitude of a body
US4472054A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1981 |
| Grant date | Sep 18, 1984 |
| Priority date | — |
| Expiry date | Aug 5, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/74
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.