Systems and methods for locating a target in a GPS-denied environment
US9606219B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2010 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Apr 9, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S11/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for locating an object in a GPS-denied environment includes first and second stationary nodes of a network and an object out of synchronization with a common time base of the network. The system includes one or more processors that are configured to estimate distances between the first stationary node and the object and a distance between the second stationary node and the object by comparing time-stamps of messages relayed between the object and the nodes. A position of the object can then be trilaterated using a location of each of the first and second stationary nodes and the measured distances between the object and each of the first and second stationary nodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.