| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an obstacle detecting apparatus for reliably detecting obstacles by appropriately updating a threshold and reducing erroneous detection. <P>SOLUTION: The obstacle detecting apparatus comprises a means 1 for radiating a transmission spectrum diffusion signal from a transmission LCX2 to a reception LCX3; a measurement distance setting means 4 for generating a control signal for setting delay time; a delay means 5 for generating delay time based on a control signal; a means 6 for generating a reference spectrum diffusion signal having phase timing according to delay time; a correlation means 7 for correlating the reference spectrum diffusion signal and the reception spectrum diffusion signal; and a means 8 for detecting obstacles based on the correlation output. The means 8 comprises: a threshold creation/storage means 81 for creating/storing the threshold based on unattendant time band information and an output level from the correlation means; and a comparison means 82 for detecting obstacles based on the comparison of the threshold level and the output level from the correlation means. <P>COPYRIGHT: (C)2004,JPO</p> |
