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US 11,828,839 B2Granted
Method and apparatus for operating radar
AssigneeSamsung Electronics Co., Ltd.
InventorSungdo Choi
Life of this patent
Estimating the term…
Abstract
A radio detection and ranging (radar) operating apparatus includes: radar sensors configured to receive signals reflected from an object; and a processor configured to generate Doppler maps for the radar sensors based on the reflected signals and estimate a time difference between the radar sensors based on the generated Doppler maps.
Claims20
A vehicle, comprising:
- a plurality of radar sensors configured to receive signals reflected from an object;
- and
- a processor configured to:
- generate Doppler maps for the radar sensors based on the reflected signals, the Doppler maps including information of Doppler velocities associated with the reflected signals;
- extract landmark points between which a Doppler velocity difference based on at least two Doppler velocities calculated from measurements by at least two different radar sensors of the plurality of radar sensors is less than a threshold velocity difference, from among target points included in the Doppler maps;
- estimate a time difference between the radar sensors based on points in time at which the radar sensors receive signals reflected from the extracted landmark points.
3 more elements
A vehicle, comprising:
- a plurality of radar sensors configured to receive signals reflected from an object;
- and
- a processor configured to:
- generate Doppler maps for the radar sensors based on the reflected signals, the Doppler maps including information of Doppler velocities associated with the reflected signals;
- extract landmark points, from the Doppler maps of the radar sensors, each having a Doppler velocity less than a threshold velocity difference;
- and
- estimate the time difference based on the landmark points.
4 more elements
A vehicle, comprising:
- a first radar sensor configured to radiate a first signal and receive a third signal resulting from the first signal being reflected from an object, and a fourth signal resulting from a second signal being reflected by the object;
- a second radar sensor configured to radiate the second signal and receive the third signal and the fourth signal;
- and
- a processor configured to:
- generate a first Doppler map for the first radar sensor, based on the third and fourth signals;
- generate a second Doppler map for the second radar sensor, based on the third and fourth signals, the first Doppler maps and the second Doppler maps respectively including information of Doppler velocities associated with the third and fourth signals;
- extract the landmark points between which a Doppler velocity difference based on at least two Doppler velocities calculated from measurements by the first radar sensor and the second radar sensor is less than a threshold velocity difference, from among target points included in the first and second Doppler maps;
- and
- estimate a time difference between the first radar sensor and the second radar sensor based on the landmark points using the first Doppler map and the second Doppler map, wherein the time difference is a difference between respective start times of respective operating intervals of the first radar sensor and the second radar sensor.
6 more elements
Dependencies are inferred from the claim text.