| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To generate a detection signal for measuring the distance to a measurement target accurately and easily while maintaining the miniaturization of a system. <P>SOLUTION: The radar system comprises a pulse generation circuit 2 for generating a baseband signal STB; a carrier generation circuit 3 for generating a carrier Sc; a modulation circuit 5 for outputting a high-frequency signal STR, obtained by modulating the carrier Sc by the baseband signal STB; a mixer circuit 12 for extracting a baseband signal SRB from a received high-frequency signal SRR; and a detection signal generation circuit 15. The detection signal generation circuit 15 generates a detection signal Sd which enables measurement of the distance to a vehicle 21, based on a baseband signal SRB1 extracted from a high-frequency signal SRR1 that is transmitted via a transmission antenna 6 and is leaked to a reception antenna 11 by a mixer circuit 12, and a baseband signal SRB2 that is extracted by the mixer circuit 12 from a high-frequency signal SRR2 reflected from the vehicle 21 and is received by the reception antenna 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
