Online radar phase calibration through static environment measurements
US11609305B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2019 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Oct 29, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/505
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus comprising an antenna array comprising a plurality of antennas to receive a plurality of radar signals reflected by a plurality of objects responsive to a transmitted radar signal; a doppler measurement module to determine, for a first reflected radar signal of the plurality of reflected radar signals, a first doppler measurement indicating a velocity component based on a comparison of the first reflected radar signal to the transmitted radar signal; a phase offset measurement module to determine a first phase offset of the first reflected radar signal received at a first antenna of the plurality of antennas relative to a phase of the first reflected radar signal received at a reference antenna of the plurality of antennas; and a phase offset calibration module to determine, for the first antenna, a first phase offset calibration error based on the first doppler measurement and the first phase offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.