Multichannel UWB-based radar life detector and positioning method thereof
US9442189B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2011 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Apr 28, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/888
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multichannel UWB-based radar life detector includes a transmitting antenna and three receiving antennas for forming three radar echo signal channels. A 2-dimensional positioning method thereof includes: a1) amplifying weak life signals of stationary human by the channels, providing an 8-point integration method with an interval of 4 points to radar echo signals by distance; then breaking the integrated signals for decomposition and reconstruction in such a manner that target echo signals and three distance signals are formed; providing digital filtering and differential to the target echo signals for amplifying the weak but useful life signals; a2) 1-dimensionally distinguishing the signals by distance, analyzing spatial frequency according to the filtered and differentiated target echo signals as well as the distance signals for obtaining three target projection signals in the three channels; and a3) identifying the 2-dimensional position information of the targets according to the projection signals, forming an image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.