Radar sensor, motor vehicle, and method for operating a radar sensor

A radar sensor for a motor vehicle, the radar sensor comprising:

• a control unit;
• an antenna arrangement;
• and
• a reflector device configured to reflect transmitted radar signals from the antenna arrangement into a measurement region and to reflect radar signals to be received by the antenna arrangement from the measurement region, wherein the reflector device comprises a parabolic reflector,
• wherein the control unit is configured to change the measurement region by changing radiation characteristic and/or reception characteristic by beamsteering or beamforming during control of the antenna arrangement such that various reflection regions of the reflector device that correspond to different measurement regions are used.

A motor vehicle, comprising:

• at least one radar sensor comprising:
• a control unit;
• an antenna arrangement;
• and
• a reflector device configured to reflect transmitted radar signals from the antenna arrangement into a measurement region and to reflect radar signals to be received by the antenna arrangement from the measurement region, wherein the reflector device comprises a parabolic reflector,
• wherein the control unit is configured to change the measurement region by changing radiation characteristic and/or reception characteristic by beamsteering or beamforming during control of the antenna arrangement such that various reflection regions of the reflector device that correspond to different measurement regions are used.

A method for operating a radar sensor, the method comprising:

• reflecting, by a reflector device of the radar sensor, transmitted radar signals from an antenna arrangement of the radar sensor into a measurement region;
• reflecting, by the reflector device, radar signals to be received by the antenna arrangement from the measurement region, wherein the reflector device comprises a parabolic reflector;
• and
• changing, using a control unit of the radar sensor and during control of the antenna arrangement, the measurement region by changing a radiation characteristic by beamsteering, such that various reflection regions of the reflector device that correspond to different measurement regions are used.