Adjustable frequency diversity acoustic communications system
US5018114A · kind A · utility
15Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1988 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Dec 13, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An underwater acoustic communication system provides an operator with adjable frequency diversity so that data rates may be tailored to specific multipath environments. Transmitted messages are sent with precursor transmission/reception synchronization data and transmission parameter data so that the receiving communication end will recognize when message data starts, tone length as-well-as the frequency diversity of the transmitted message. Timing is extracted from the data to compensate for Doppler shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.