Passive radar with analogue cancellation of the static component
US11086003B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 2019 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Dec 13, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/462
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A passive radar comprises a reception antenna for a signal transmitted by a non-cooperative transmitter, the received signal comprising a static contribution related to propagation of the signal transmitted through a multi-path propagation channel and a dynamic contribution related to propagation of echoes of the transmitted signal from a moving target. The passive radar also comprises a reception chain that includes an analogue-digital converter capable of outputting a digitised signal, a moving target detection unit, a digitised signal processing unit configured to determine an estimation of the static contribution during a calibration phase of the passive radar, a transmission chain that can output an analogue signal representative of the estimation of the static contribution, and a directional coupler configured to output the signal received during the calibration phase of the passive radar to the reception chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.