Patent ID: 7075477

Claim:
A radar for searching for a target, comprising: a transmission signal processing system which generates and transmits a transmission signal to space as a search wave; a reception signal processing system which receives a reflected wave at the target when the target exists and processes the received reflected wave, wherein the reception signal processing system includes: a high-speed operation circuit formed of a high-speed operation part, which operates at a higher frequency than a predetermined frequency; and a low-speed operation circuit formed of a low-speed operation part, which operates at lower speed than the predetermined frequency and processes the reflected wave; an auxiliary signal processing system which is separate from the reception signal processing system and has the same configuration as at least a part of the reception signal processing system, which has an operation speed lower then the predetermined frequency, wherein the auxiliary signal processing system includes an auxiliary low-speed operation circuit having the same configuration as the low-speed operation circuit; a transmission-signal input unit which directly inputs the transmission signal generated in the transmission signal processing system to the auxiliary signal processing system; a search determination unit which makes a determination on the search for the target on the basis of a processing result of the received reflected wave by the reception signal processing system and a processing result of the directly input signal by the auxiliary signal processing system; and the reflected wave to be processed by the low-speed operation circuit of the reception signal processing system is derived from the transmission signal, which the transmission-signal input unit inputs directly to the auxiliary low-speed operation circuit of the auxiliary signal processing system.