Combined radar and communications link
US8044839B2 · kind B2 · utility
5Cited by
14References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 2009 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Jun 18, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/888
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a CW radar system for detecting motion behind a wall involving modulation of the radar transmission, means are provided to interrupt the CW wave when motion is detected and to use the same radar transmitter to transmit a serial digital message to a remote monitoring receiver. The encoding can include a receiver wakeup message to turn on the receiver only when motion has been detected. In one embodiment, a microprocessor is used to detect when motion exists behind a wall and to provide a tailorable message to modulate the radar's transmitter in the period when the CW signal from the radar is turned off after motion detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.