Method and system for laser-based communication between a ground station and a mobile craft
US10630386B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2017 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Nov 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/503
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An emission/reception device is configured for communication between a ground station and a mobile craft which is provided with a retro-reflector configured to modulate a laser beam received along a direction and to return it along the direction, the mobile craft being situated above a backscattering zone, the emission/reception device generating at least two temporally offset emission/reception sequences, each being associated with a laser beam and comprising successive pairs of associated emission and reception phases, the emission phase including emitting a laser beam from the ground station towards the mobile craft, and the reception phase including receiving a laser beam returned by the retro-reflector, each reception phase being deactivated during the transit through the backscattering zone of the laser beam emitted during the associated emission phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.