Multi-target life detection method based on radar signal and detection radar
US11435470B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2020 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Mar 12, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is a multi-target life detection method based on radar signals. The method includes: performing time accumulation in a slow time direction on a preprocessed echo signal to obtain a first echo signal; performing an envelope extraction of inflection points on the first echo signal to obtain a second echo signal; calculating an average value of all amplitude signals in the second echo signal other than M marked amplitude signals; and in response to a ratio of a marked amplitude signal to the average value being greater than a threshold, determining that a living target exists at a radar detection distance corresponding to the marked amplitude signal. According to the life detection method of the present disclosure, a normalization method is adopted to normalize signal amplitudes of the radar in a dimension of fast time (distance). In addition, two envelope extractions of inflection points may be performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.