| 摘要 |
<P>PROBLEM TO BE SOLVED: To increase a coherent integration gain or a non-coherent gain in a radar device by using a simple constitution in spite of expansion of Doppler spectrum contained in a reflection wave from a target. <P>SOLUTION: A radar transmission section converts a transmission signal to a high frequency transmission signal and transmits it from a transmission antenna. A radar reception section estimates an arrival direction of the reflection wave reflected from a target by using a plurality of reception antennas. The radar reception section includes: a plurality of antenna system processing sections for making coherent integration by using a correction amount of a phase variation corresponded to a plurality of Doppler frequencies based on a correlation value of the reception signal and the transmission signal; a plurality of correlation matrix generation sections for generating a correlation matrix which is phase difference information caused by an arrangement of each reception antenna, for every Doppler frequency based on each output of the plurality of coherent integration; an addition section for adding outputs of the plurality of correlation matrix generation sections; and an arrival direction estimation section for estimating the arrival direction of the reflection wave based on the output of the addition section. <P>COPYRIGHT: (C)2013,JPO&INPIT |
