Optical non-line-of-sight covert, secure high data communication system
US4493114A · kind A · utility
31Cited by
12References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1983 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | May 2, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/4902
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An omnidirectional non-line-of-sight communication capability is assured by ransmission and reception in the "solar blind" ultraviolet spectrum. An omnidirectional ultraviolet source generates a UV carrier in the tens of watts power range. This is modulated and received by having a sensitivity to respond to scattered UV modulated energy. Pulse modulating the ultraviolet spectrum signal and providing appropriate logic circuitry associated with the wide field-of-view receiver reduces the values of bit error rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.