Radar device

A radar device, comprising:

• a receiver which, in operation, receives one or more radar transmission signals transmitted from another radar device, in an interference measurement segment in which transmission of one or more radar transmission signals from the radar device is stopped;
• A/D conversion circuitry which, in operation, converts the one or more radar transmission signals from the other radar device received by the receiver from one or more analog signals into one or more digital signals;
• interference detection circuitry which, in operation, performs a correlation calculation between each of one or more discrete samples that is the one or more digital signals and a prescribed coefficient sequence to detect one or more prescribed frequency components included in the one or more digital signals, as one or more interference signal components;
• interference determination circuitry which, in operation, compares each of the detected one or more interference signal components with a prescribed determination level in the interference measurement segment, determines that one or more interference components are not present when each of the one or more interference signal components is equal to or less than the prescribed determination level, and determines that the one or more interference components are present when any of the one or more interference signal components exceeds the prescribed determination level;
• and
• respective-angle interference component detection circuitry which, in operation, when the interference determination circuitry has determined that the one or more interference components are present, performs direction estimation based on phase differences between reception antennas and calculates an interference component for each beam angle.