Enhanced location methodology for a location system
US6515623B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 2001 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Jun 29, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A first device (100) transmits a first signal to a second device (300) at a first time. A third device (110) detects a second signal from the second device (300) at a second time. The second signal was transmitted in response to detection of the first signal. Based on the first and second times, a sum of a first propagation delay (200) and a second propagation delay (210) is estimated. The first propagation delay (200) is between the first device (100) and the second device (300), and the second propagation delay (210) is between the second device (300) and the third device (110). The sum of the first and second propagation delays (200, 210) is then used to estimate a location of the second device (300).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.