Title:
SYSTEM AND METHOD FOR MONITORING AREA
Document Type and Number:
Japanese Patent JP3520856
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance tracking precision without affected by fluctuation of positioning error in an azimuth direction, even when a positioning time interval for a target is shortened.
SOLUTION: This system is provided with two radars for positioning individually the same target existing in an overpapped portion in a covering area while synchronized, to output a positioned result of the target as distance information and azimuth information, a processing part 108 by a method of intersection and resection for finding two intersections in two circles of which the centers are respective set positions of the two radars, and having respectively radii of distances indicated by the distance informations of the target output respectively from the two radars, a determination part 109 for determining one, out of two intersection positions, near to positioning results by the two radars as position information of the target, and a tracking processing part 110 for conducting tracking processing using the position information of the target.
Inventors:
Nemoto, Shigeru
Application Number:
JP2001069918A
Publication Date:
April 19, 2004
Filing Date:
March 13, 2001
Export Citation:
Assignee:
NEC CORP
International Classes:
G08G5/00; G01S7/02; G01S13/66; G01S13/87; G01S13/91; G01S19/14; (IPC1-7): G01S13/66; G01S13/87; G01S13/91
Attorney, Agent or Firm:
山川 政樹
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