Patent ID: 11867792
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. An object velocity detection apparatus, the apparatus comprising:
a radar sensor including a plurality of antennas, including different first and second antennas; and
a processor configured to:
obtain a first reception signal and a second reception signal that are received in first and second different time intervals corresponding to different transmission times by the first and second antennas, respectively, wherein a first phase difference of the first reception signal and a second phase difference of the second reception signal is based on a distance between the pair of antennas;
estimate a Doppler effect component, with respect to a movement of an object, dependent on the first reception signal and the second reception signal;
generate a Doppler compensated first signal and a Doppler compensated second signal by respectively removing, from the second reception signal and another second reception signal received by the first antenna during the second time interval;
estimate an angle value of an object, as an estimation of an included angle value in the first and second reception signals, dependent on the Doppler compensated first signal and the Doppler compensated second signal;
generate a first angle value compensated signal and a second angle value compensated signal by removing the estimated angle value from the Doppler compensated first signal and the Doppler compensated second signal; and
determine a velocity of the object dependent on the first angle value compensated signal and the second angle value compensated signal.