Title:
レーダ
Document Type and Number:
Japanese Patent JP4120679
Kind Code:
B2
Abstract:
A radar wherein a first threshold value is determined in accordance with the intensity of background noise; second threshold values are set in a fixed frequency area around base portions of peaks in the frequency spectrum; the higher one of these second threshold values is adopted as a decisive threshold value in each FFT bin; and a peak exceeding this threshold value is considered a target peak and detected. Thus, the target peak caused by the reflected wave from a target included in the frequency spectrum of a beat signal is surely detected and detection accuracy of the target is increased.
More Like This:
Inventors:
Nakanishi Moto
Application Number:
JP2005516274A
Publication Date:
July 16, 2008
Filing Date:
October 27, 2004
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
G01S13/34; G01S7/32; G01S7/35; G01S13/93
Domestic Patent References:
| JP8226963A | ||||
| JP11344560A | ||||
| JP4278487A | ||||
| JP2003050275A | ||||
| JP2003294835A |
Attorney, Agent or Firm:
Hisao Komori
Tatsuichi Murakami
Tatsuichi Murakami