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Title:
MOBILE SPEED DETECTOR AND MOBILE SPEED DETECTION METHOD
Document Type and Number:
Japanese Patent JP3431489
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To detect a mobile speed of a mobile body in the CDMA system.
SOLUTION: A demodulation and a correlation detection section apply demodulation processing and correlation processing to a transmission wave by the spread spectrum system and output a correlation value. A correlation value sampling section 41 samples a correlation value by the same delay wave from the correlation value A peak detection section 45 detects peaks appearing repetitively at the sampled correlation value. A time difference detection section 46 obtains a time difference between two peaks among the detected peaks. A speed arithmetic section 47 divides a distance coefficient by the time difference obtained by the time difference detection section 46 to device a mobile speed of the mobile body.


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Inventors:
Manabu Ono
Application Number:
JP7318898A
Publication Date:
July 28, 2003
Filing Date:
March 05, 1998
Export Citation:
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Assignee:
Communication/Broadcasting Organization
Panasonic Mobile Communications Co., Ltd.
International Classes:
G01S11/02; H04B1/7117; H04J13/00; H04Q7/34; (IPC1-7): H04Q7/34; G01S11/02; H04J13/00
Domestic Patent References:
JP1079701A
JP8271621A
Attorney, Agent or Firm:
Koichi Washida



 
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