Wireless system using continuous wave phase measurement for high-precision distance measurement
US7504992B2 · kind B2 · utility
21Cited by
23References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 1, 2007 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Oct 16, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/88
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for monitoring topological changes in a defined area. A grid of sensors is arranged in the area, with known distances between them. The sensors communicate wirelessly with a host computer, which individually addresses each sensor to instruct that sensor to be in an interrogate mode or responder mode. When a sensor is in interrogate mode, it measures distance from a neighboring sensor using radar (continuous wave phase difference) measurements. When a sensor is in responder mode, it receives, delays, and returns a signal received from a neighboring sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.