Radar device, signal processor, signal processing method, and mobile object

A signal processor comprising:

• an oscillator configured to oscillate a local signal;
• a mixer configured to multiply a reflected wave in which a transmission signal based on the local signal is reflected from a target and the local signal by each other to produce a multiplied signal;
• and
• a first shifter provided between the oscillator and the mixer and configured to shift a phase of the local signal.

A signal processing method comprising:

• oscillating, by an oscillator, a local signal;
• emitting a transmission signal based on the local signal from a transmitting antenna;
• receiving, by a receiving antenna, a reflected wave in which the transmission signal is reflected from a target;
• multiplying, by a mixer, the reflected wave and the local signal by each other to produce a multiplied signal;
• and
• shifting, by a shifter provided between the oscillator and the mixer, a phase of the local signal.