| 摘要 |
PROBLEM TO BE SOLVED: To obtain a radar device with which it is possible to suppress a drift in a beam orientation direction due to a frequency fluctuation.SOLUTION: The radar device comprises: an antenna unit 11 consisting of a plurality of element antennas; a radar control unit 12 for dividing a plurality of element antennas 11a into a plurality of sub-arrays 11A, 11B, 11C, and determining a frequency band and a beam scanning frequency to be assigned for each of the sub-arrays 11A, 11B, 11C; a phase shifter control unit 13 for calculating the amount of phase adjustment for each element antenna 11a on the basis of the beam scanning frequency; a phase shifter 14, disposed for each element antenna 11a, for adjusting the phase of a received signal that is received by the antenna unit 11 on the basis of the amount of phase adjustment; a synthesis-distribution unit 15 for synthesizing, for each of the sub-arrays 11A, 11B, 11C, the received signal whose phase was adjusted by the phase shifter 14; a reception processing unit 16 for processing the received signal that was synthesized by the synthesis-distribution unit 15; and a target detection unit 17 for detecting a target signal from the received signal that was processed by the reception processing unit 16.SELECTED DRAWING: Figure 1 |
