FM-CW RADAR SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an FM-CW radar system capable of detecting generation of interference by other radar. SOLUTION: An oscillator 2 generates a frequency-modulated transmission signal frequency-modulated by a frequency modulator 1 to be transmitted from a transmission antenna 4 as an electromagnetic wave. The electromagnetic wave emitted from the antenna 4 is reflected by an object to be received by a reception antenna 5. A mixer 6 mixes the received signal received by the antenna 5 with one portion of the transmission signal divided by a directional coupler 3, and a frequency of a mixer output is measured by a frequency measuring instrument 7. A signal processing part 8 calculates a distance and a relative distance with respect to the object based on a measured result by the measuring instrument 7. An interference detecting part 9 compares a level of an amplitude of an output signal of the mixer 6 with a level of a prescribed threshold value, and judges the generation of the interference by the other radar when the amplitude of the output signal exceeds the threshold value.