Method and/or system for obtaining signatures for use in navigation
US9026138B2 · kind B2 · utility
3Cited by
1References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2013 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Feb 9, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/02524
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed are systems, methods and techniques for obtaining round trip time (RTT) measurements from acquisition of signals at one or more mobile devices, the signals being transmitted by one or more transmitters; approximating locations of the one or more mobile devices while obtaining the RTT measurements; and combining the measurements to determine expected RTT signature values at discrete positions in the area based, at least in part, on the obtained RTT measurements and the approximated locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.