Covert long range positive friendly identification system
US8269664B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2008 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Apr 7, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/78
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention pertains to a portable repeater device for use by friendly forces in a combat theater. The repeater device includes a sensor that receives an interrogator signal, coded or un-coded, from a friendly interrogator, such as an airborne attack or search and rescue vehicle, and a transmitter that transmits a coded or uncoded beacon at a covert wavelength outside the typical night-vision spectrum back to the interrogator in response. Because the transmission wavelength of the repeater signal is covert and outside typical night-vision capabilities, the system limits the ability of enemy forces to locate friendly forces employing such signaling beacons through typical night-vision equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.