Method and system for presence detection
US7907082B2 · kind B2 · utility
3Cited by
18References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2008 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Aug 19, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/56
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for presence detection within a detection volume delimited by an inner radius and an outer radius using microwave radiation. The outer radius of the detection volume is controlled by selecting the length of a first pulse controlling the transmit interval of a microwave transmitter and by selecting the length of a third pulse controlling the receive interval of a microwave receiver. The inner radius of the detection volume is controlled through selecting the length of a second pulse defining a predetermined time period between the first pulse and the third pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.