Passive moving object detection system and method using signals transmitted by a mobile telephone station
US6930638B2 · kind B2 · utility
45Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2002 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Jul 25, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/92
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A passive object detection system (1) comprises first and second antennas (4, 6) and a processor (8). The first antenna (4) is adapted to receive a signal transmitted by a mobile telephone base station; the second antenna (6) is adapted to receive the signal transmitted by a mobile telephone base station (2) after it has been reflected off an object (3) and the processor compares the signal received from the mobile telephone base station with the signal reflected from the object to derive speed or position information relating to the object therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.