Methods and apparatus for cross-medium communication
US10998984B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2019 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Apr 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B11/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An underwater transmitter may generate underwater pressure waves that encode bits of data. The pressure waves may travel to, and created minute vibrations in, the water's surface. An airborne radar may detect radar signals that reflect from the water's surface. The surface vibrations may modulate the phase of the reflected radar signal. The radar receiver may, based on the variation in the phase of the reflected radar signal, decode the data that was initially encoded in the underwater pressure waves. The underwater pressure waves may be frequency modulated, such as by orthogonal frequency-division multiplexing. Alternatively, the surface vibrations may be detected by a camera, interferometer or other light sensor. Alternatively, the pressure waves may propagate through a media other than water. For instance, the pressure waves may propagate through bodily tissue, or may propagate through oil or a liquid fracking mixture in an oil or gas well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.