| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve such problems that a reflection wave from a target having a small RCS becomes a low power level and when it is detected by using a correlation arithmetic process with a direct wave from a transmission source, a reception timing of the target reflection wave cannot be obtained, with the result that a delay time difference of incident time with the direct wave from the transmission source cannot be obtained. <P>SOLUTION: The radar device in this invention improves estimation accuracy of an incident timing for incidence of a target reflection wave in such a manner that a zero suppressing process is performed for replacing to zero value with regard to data of reception timing of incident signal directly from a higher level transmission source among reception signals and a correlation coefficient is obtained by correlation operation between data after the zero suppressing process and data corresponding to the direct wave from the transmission source. <P>COPYRIGHT: (C)2012,JPO&INPIT |
