Radar device
The disclosure relates to a radar device. According to the disclosure, a radar device comprises an antenna unit including a first reception antenna including at least one reception channel disposed apart from each other by a first interval and a first transmission antenna including at least one transmission channel disposed apart from each other by a second interval, a transceiver transmitting a transmission signal through the first transmission antenna and receiving a signal reflected by an object through the first reception antenna, and a controller obtaining information about the object by processing the reflected signal received through the first reception antenna.
1. A radar device, comprising:
an antenna unit including:
a first reception antenna including reception channels disposed apart from each other by a first interval in a first direction parallel to a ground,
a first transmission antenna including transmission channels disposed apart from each other by a second interval different from the first interval in the first direction parallel to the ground,
a second transmission antenna spaced apart from the first reception antenna in a second direction, perpendicular to the ground, and including a plurality of transmission channels disposed apart from each other by the second interval in the first direction parallel to the ground, and
a second reception antenna spaced apart from the first transmission antenna in the second direction, perpendicular to the ground, and including a plurality of reception channels disposed apart from each other by the first interval in the first direction parallel to the ground;
a transceiver transmitting a transmission signal through the first transmission antenna and receiving a signal reflected by an object through the first reception antenna; and
a controller obtaining information about the object by processing the reflected signal received through the first reception antenna,
wherein the first transmission antenna is located next to the first reception antenna in the first direction parallel to the ground, the second transmission antenna is located directly below the first reception antenna in the second direction perpendicular to the ground, and the second reception antenna is located directly below the first transmission antenna in the second direction perpendicular to the ground and next to the second transmission antenna in the first direction parallel to the ground, and
wherein each channel of the reception channels or the transmission channels is defined as at least one array antenna supplied power through a single feeding line.
2. The radar device of claim 1 , wherein the first reception antenna includes eight reception channels disposed in the first direction, and the first transmission antenna includes four transmission channels disposed in the first direction.
3. The radar device of claim 1 , wherein the first reception antenna is spaced apart from the first transmission antenna by the second interval in the first direction parallel to the ground.
4. The radar device of claim 1 , wherein the second reception antenna is spaced apart from the second transmission antenna by the second interval in the first direction parallel to the ground.
5. The radar device of claim 1 , wherein the first interval is set so that a difference in absolute value from the second interval is 0.5 wavelength of a transmission signal of the radar device or more and 1 wavelength or less of the transmission signal of the radar device.
6. The radar device of claim 1 , wherein the first interval and the second interval each are set to 1 wavelength or more of a transmission signal of the radar device.