US 12,345,803 B2
Radar signal processing device, radar signal processing method, radar device, and in-vehicle device
Takahiro Horiguchi, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
Filed on Aug. 12, 2022, as Appl. No. 17/886,991.
Application 17/886,991 is a continuation of application No. PCT/JP2020/016656, filed on Apr. 16, 2020.
Prior Publication US 2022/0390584 A1, Dec. 8, 2022
Int. Cl. G01S 13/72 (2006.01); B60W 40/105 (2012.01)
CPC G01S 13/726 (2013.01) [B60W 40/105 (2013.01); B60W 2420/408 (2024.01)] 8 Claims
OG exemplary drawing
 
1. A radar signal processing device comprising:
processing circuitry configured to
repeatedly acquire a beat signal having a frequency of a difference between a frequency of a radar signal whose frequency changes with a lapse of time and a frequency of a reflected wave of the radar signal reflected by an observation target, repeatedly calculate at least one distance between a radar device and the observation target using the acquired beat signal, the at least one distance comprising a plurality of distances, and repeatedly calculate at least one relative speed between the radar device and the observation target using the acquired beat signal, the at least one relative speed comprising a plurality of relative speeds;
calculate an incident angle of the reflected wave to an array antenna by using the acquired beat signal and an arrangement interval between a plurality of reception antennas included in the array antenna that receives the reflected wave; and
determine whether the observation target is a detection target or a non-detection target due to electromagnetic noise on a basis of the calculated incident angle and the plurality of distances and the plurality of relative speeds having been calculated,
wherein the processing circuitry performs determination processing of determining whether the observation target is the detection target or the non-detection target due to electromagnetic noise on a basis of the plurality of distances and the plurality of relative speeds only when an absolute value of the calculated incident angle is equal to or less than a first threshold.