Wideband high frequency based precision time transfer
US9693330B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2015 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Sep 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0428
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Timing interrogation methods and communication devices utilizing such timing interrogation methods are disclosed. The timing interrogation method may include: sending a round-trip timing interrogation preamble from a first radio node to a second radio node via the ionosphere; receiving a round-trip timing response at the first radio node via the ionosphere from the second radio node; receiving a time of arrival record at the first radio node via the ionosphere from the second radio node, wherein the time of arrival record indicates the time of arrival of the round-trip timing interrogation preamble at the second radio node according to timing information maintained by the second radio node; calculating timing information based on the time of arrival record and a propagation time of the round-trip timing interrogation preamble and the round-trip timing response; and adjusting time information maintained by the first radio node according to the calculated timing information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.