Radar apparatus, radar control apparatus, and radar system

A radar apparatus comprising:

• a transmission unit including a first transmitter configured to transmit a first radio wave and a second transmitter configured to transmit a second radio wave, the first radio wave and the second radio wave having different polarization characteristics from each other;
• a reception unit configured to receive reflected radio waves that are radio waves reflected by a detection target, the radio waves including the first radio wave and the second radio wave, wherein there is a change in an original polarization characteristic of at least one of the first radio wave and the second radio wave after being reflected;
• and
• a control unit configured to control operations of the transmission unit and the reception unit, and configured to identify the detection target on a basis of information as to which of the first transmitter and the second transmitter is operating, and a reception level at the reception unit.

A radar control apparatus configured to perform:

• a first control operation of controlling an operation of a transmission unit configured to transmit radio waves;
• a second control operation of controlling an operation of a reception unit including a first receiver configured to receive a first reflected radio wave and a second receiver configured to receive a second reflected radio wave, wherein the first reflected radio wave and the second reflected radio wave are included in reflected radio waves that are the radio waves reflected by a detection target, and wherein there is a change in an original polarization characteristic of at least one of the first reflected radio wave and the second reflected radio wave;
• and
• an identification operation of identifying the detection target on a basis of the operation of the transmission unit, a first reception level at the first receiver, and a second reception level at the second receiver.

A radar system comprising:

• a radar apparatus;
• and
• a reflector provided for a detection target of the radar apparatus,
• the radar apparatus including
• a transmission unit configured to transmit radio waves;
• a reception unit including a first receiver configured to receive a first reflected radio wave and a second receiver configured to receive a second reflected radio wave, wherein the first reflected radio wave and the second reflected radio wave are included in reflected radio waves that are the radio waves reflected by the reflector, and wherein there is a change in an original polarization characteristic of at least one of the first reflected radio wave and the second reflected radio wave;
• and
• a control unit configured to control operations of the transmission unit and the reception unit, and configured to identify the detection target on a basis of the operation of the transmission unit, a first reception level at the first receiver, and a second reception level at the second receiver.