Method and sensor for detecting foreign bodies in a medium with a radar
US6366232B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1999 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | Oct 7, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/885
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting foreign bodies in a medium with a radar having a transceiver, and including emitting a radar wave through a wall surface into the medium with the transceiver, detecting a radar signal reflected in the medium, pre-processing the reflected radar signal and subjecting the pre-processed radar signal to evaluation and assessment, determining a characteristic of a foreign body at a stationary position of the transceiver with an algorithm which is based on a pre-processed, digitalized receivable signal, which characteristic permits to recognize differences between a shape of the reflected radar signal and stored comparison values, and conducting a comparison assessment of the shape differences of the reflected signal against predetermined threshold values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.