Calibrating array antennas based on signal energy distribution as a function of angle
US12164057B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2019 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | May 22, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/93271
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radar detection method with receive antenna calibration includes: forming a detection matrix from signals detected by an arrangement of receive antennas in response to chirps transmitted by an arrangement of transmit antennas, the detection matrix having multiple rows corresponding to the chirps, multiple columns corresponding to a sample of the signals, and multiple planes corresponding the receive antennas; deriving a range matrix by performing a frequency transform on a portion of each row of the detection matrix; deriving a velocity matrix by performing a frequency transform on a portion of each column of the range matrix; deriving a direction-of-arrival matrix by performing a frequency transform on a portion of one or more layers of the velocity matrix; analyzing the direction-of-arrival matrix to determine a current peak width; and adjusting, based on the current peak width, phase shifts associated with one or more antennas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.