GPS independent guidance sensor system for gun-launched projectiles
US8598501B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2011 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Oct 17, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/0247
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A sensor system uses ground emitters to illuminate a projectile in flight with a polarized RF beam. By monitoring the polarization modulation of RF signals received from antenna elements mounted on the projectile, both angular orientation and angular rate signals can be derived and used in the inertial solution in place of the gyroscope. Depending on the spacing and positional accuracies of the RF ground emitters, position information of the projectile may also be derived, which eliminates the need for accelerometers. When RF signals of ground emitter/s are blocked from the guided projectile, the sensor deploys another plurality of RF antennas mounted on the projectile nose to determine position and velocity vectors and orientation of incoming targets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.