Phase difference of arrival geolocation
US9651648B1 · kind B1 · utility
4Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2012 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Mar 6, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Geolocation is performed by receiving, at a plurality of non-earthbound platforms each moving in a known manner within a spatial coordinate system, a radio frequency (RF) signal transmitted from a transmitter at an unknown location on earth within the spatial coordinate system. For each of the platforms, a phase change of the received frequency carrier is measured over the same duration of time. The measured phase changes are combined to determine the transmitter location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.