Combined radar and communications link
US7633426B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2004 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Aug 7, 2026 |
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 (12) involving modulation of the radar transmission, means (34) are provided to interrupt the CW wave when motion is detected and to use the same radar transmitter (30) to transmit a serial digital message to a remote monitoring receiver (34). The encoding can include a receiver wakeup message to turn on the receive only when motion has been detected. In one embodiment, a microprocessor (28) 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 the motion detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.