| 摘要 |
PROBLEM TO BE SOLVED: To provide a radar device capable of reducing the effect of an internal reflection wave (clutter) in an analog processing manner.SOLUTION: In a radar device 1, a first light-receiving unit 20a generates a light-received signal indicating a voltage waveform corresponding to the waveform of a reflection wave received by a light-receiving element 9, and a second light-receiving unit 20b generates, with timing based on a known time until a clutter is received by the light-receiving element 9 after a pulse laser beam is emitted by the light-emitting unit 10, a simulated signal indicating a voltage waveform corresponding to the waveform of a current flowing in a simulation circuit 11b. Here, as the simulation circuit 11b is a circuit simulating a light-emitting circuit 11a, a waveform analogous to a clutter voltage waveform is generated as the voltage waveform indicated by the simulated signal. This makes it possible for a cancellation circuit 20c to remove, by using the simulated signal generated by the second light-receiving unit 20b, the clutter voltage waveform from the voltage waveform indicated by the light-received signal generated by the first light-receiving unit 20a. |
