A radar device comprising: a first radar transmitter including: a first transmission signal generator, configured to generate a first modulation signal (S-Tx1) in which a predetermined number of code sequences (a n_p1) are repeated using a first pulse code width (T p1), each code sequence (a n_p1) having a predetermined code length; and a first transmission RF section, configured to convert the first modulation signal into a first radio-frequency radar transmission signal and transmit the first radar transmission signal from a first transmission antenna (AN-Tx1); and a second radar transmitter including: a second transmission signal generator, configured to generate a second modulation signal (S-Tx2) in which a predetermined number of code sequences (a n_p2) are repeated using a second pulse code width (T p2) different from the first pulse code width (T p1), the first pulse code width (T p1) not being an integer multiple of the second pulse code width (T p2), each code sequence (a n_p2) having the predetermined code length, codes of the code sequences (a n_p1) of the first modulation signal and codes of the code sequences (a n_p2) of the second modulation signal have a different pulse width per code (T s); and a second transmission RF section, configured to convert the second modulation signal into a second radio-frequency radar transmission signal and transmit the second radar transmission signal from a second transmission antenna (AN-Tx2). a first radar transmitter including: a first transmission signal generator, configured to generate a first modulation signal (S-Tx1) in which a predetermined number of code sequences (a n_p1) are repeated using a first pulse code width (T p1), each code sequence (a n_p1) having a predetermined code length; and a first transmission RF section, configured to convert the first modulation signal into a first radio-frequency radar transmission signal and transmit the first radar transmission signal from a first transmission antenna (AN-Tx1); and a first transmission signal generator, configured to generate a first modulation signal (S-Tx1) in which a predetermined number of code sequences (a n_p1) are repeated using a first pulse code width (T p1), each code sequence (a n_p1) having a predetermined code length; and a first transmission RF section, configured to convert the first modulation signal into a first radio-frequency radar transmission signal and transmit the first radar transmission signal from a first transmission antenna (AN-Tx1); and a second radar transmitter including: a second transmission signal generator, configured to generate a second modulation signal (S-Tx2) in which a predetermined number of code sequences (a n_p2) are repeated using a second pulse code width (T p2) different from the first pulse code width (T p1), the first pulse code width (T p1) not being an integer multiple of the second pulse code width (T p2), each code sequence (a n_p2) having the predetermined code length, codes of the code sequences (a n_p1) of the first modulation signal and codes of the code sequences (a n_p2) of the second modulation signal have a different pulse width per code (T s); and a second transmission RF section, configured to convert the second modulation signal into a second radio-frequency radar transmission signal and transmit the second radar transmission signal from a second transmission antenna (AN-Tx2). a second transmission signal generator, configured to generate a second modulation signal (S-Tx2) in which a predetermined number of code sequences (a n_p2) are repeated using a second pulse code width (T p2) different from the first pulse code width (T p1), the first pulse code width (T p1) not being an integer multiple of the second pulse code width (T p2), each code sequence (a n_p2) having the predetermined code length, codes of the code sequences (a n_p1) of the first modulation signal and codes of the code sequences (a n_p2) of the second modulation signal have a different pulse width per code (T s); and a second transmission RF section, configured to convert the second modulation signal into a second radio-frequency radar transmission signal and transmit the second radar transmission signal from a second transmission antenna (AN-Tx2).