| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radar device which suppresses a second echo without decreasing target detection performance. <P>SOLUTION: A radar device comprises: a receiving section 6 for creating a receiving signal; a first secondary echo phase correction section 7 for correcting a phase of the receiving signal; a first secondary echo removal section 8 for removing a first Doppler frequency component from the receiving signal having undergone the phase correction; a secondary echo power estimation section 16 for calculating a removal power; a first primary echo phase correction section 9 for correcting a phase of an output signal from the first secondary echo removal section 8; a first topographic echo removal section 10 for removing a second Doppler frequency component from the receiving signal having undergone the phase correction; a second primary echo phase correction section 11 for correcting a phase of the receiving signal; a second topographic echo removal section 12 for removing a third Doppler frequency component; a primary topographic echo power estimation section 17 for calculating a removal power; a second secondary echo phase correction section 13 for correcting a phase of the receiving signal having undergone the removal of unnecessary waves; and a second secondary echo removal section 14 for removing a fourth Doppler frequency component. <P>COPYRIGHT: (C)2012,JPO&INPIT |
