Radar device

A radar device comprising:

• a transmission module configured to concurrently transmit radiowaves of different frequency bands from antennas;
• a reception module configured to receive target-reflected waves transmitted from the transmission module and reflected by a target;
• a synthetic processing module configured to combine the target-reflected waves corresponding to the respective antennas, received by the reception module, in a manner that suppresses false peaks caused by shift to other frequency bands due to the Doppler frequency;
• and
• a detection processing module configured to detect the target using a result of the combining obtained by the synthetic processing module,
• wherein the transmission module includes
• M transmitters configured to generate signals having linear-frequency-modulated waveforms at different frequency bands where M is equal to or larger than 2,
• M transmission antennas configured to transmit the signals generated by the M transmitters as radiowaves, and
• M transmission-side A/D converters configured to convert the analog signals generated by the M transmitters into digital signals, and
• wherein the synthetic processing module includes
• L reception-side A/D converters configured to convert output signals of the reception module into digital signals,
• L pulse compressors configured to perform pulse compressions using output signals of the L reception-side A/D converters and the M transmission-side A/D converters, and
• L transmission DBF units configured to combine output signals of the L pulse compressors based on the signals having different frequency bands, generated by the M transmitters.