Determination of roll angle
US5414430A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1993 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Sep 8, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41G7/305
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A system for an unambiguous determining of the roll angle attitude of a rotating projectile, grenade, missile or the like with the aid of a polarized electromagnetic radiation, comprises a transmitter for emitting a position-determining polarized radiation (space wave) in the direction of the projectile and a receiver arranged in the projectile for receiving the emitted radiation. The emitted space wave is made up of a carrier wave reference with frequency f.sub.1 which has been phase-modulated with a modulation frequency f.sub.2, wherein f.sub.2 is<<f.sub.1 and wherein f.sub.2 forms a submultiple of the carrier wave frequency f.sub.1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.