System and methods for a private eLoran service
US11073591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2017 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Jul 20, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for generating private eLoran signals includes receiving, by a transmitter site, a transmission key. The transmitter site is configured to transmit a timing signal at a fixed time. The method also includes determining, by the transmitter site, for the timing signal configured to be transmitted at the fixed time, a pseudo-random transmission time for transmitting the timing signal, and initiating transmission, by the transmitter site, of the timing signal at the pseudo-random transmission time.]. A method for receiving private timing signals includes determining, by the receiver device and using the fixed time, a pseudo-random time for receiving the timing signal from the transmitter site, receiving, by the receiver device, the timing signal at the pseudo-random time, and using, by the receiver device, the timing signal to determine at least one of a time, a longitude, and a latitude at the receiver device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.