Phase difference of arrival geolocation
| Patent Number: | 9,651,648 |
| Issued: | 5/16/2017 |
| Official Filing: | View the Complete Patent |
| 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. |
| Filed: | 6/19/2012 |
| Application Number: | 13/527,383 |
| Government Interests: | STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |