RADAR DEVICE

摘要

In order to maintain low range sidelobe characteristics in signals of a reflected wave from a target even when the target moves, and to reduce interference among a plurality of sector radars, a first sector radar generates a signal obtained by modulating a first code sequence at a first transmission cycle, a signal obtained by modulating a second code sequence at a second transmission cycle, a signal obtained by modulating the first code sequence at a third transmission cycle, and a signal obtained by modulating the second code sequence at a fourth transmission cycle. A second sector radar generates a signal obtained by modulating the second code sequence at the first transmission cycle, a signal obtained by modulating, at the second transmission cycle, a third code sequence having the opposite polarity to the first code sequence, a signal obtained by modulating, at the third transmission cycle, a fourth code sequence having the opposite polarity to the second code sequence, and a signal obtained by modulating the first code sequence at the fourth transmission cycle. The first and second sector radars respectively transmit the generated signals from first and second transmission antennae.