| 摘要 |
The present invention relates to a radar comprising an array antenna formed with multiple antennas, and more specifically, to a radar comprising an array antenna, wherein the radar can receive multiple signals through the array antenna. The radar according to an embodiment of the present invention comprises: a transmitter for transmitting a correction signal and a modulation signal for detecting a target; multiple antennas for respectively receiving the correction signal transmitted from the transmitter and the modulation signal reflected from the target; and a signal processing unit for calibrating phases of signals received through the multiple antennas by using the correction signal and the modulation signal received through the multiple antennas. The signal processing unit calculates a first phase correction value by using the received correction signal by each of the multiple antennas, and calculates a second phase correction value different from the first phase correction value by using the received modulation signal, and then calculates a final phase correction value by each of the multiple antennas based on the first and second correction values, and corrects the phases of the signals received from the multiple antennas by performing feedback processing of the calculated final phase correction value by each of the multiple antennas. |
