Title:
電波発信源位置推定システム
Document Type and Number:
Japanese Patent JP6696377
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a radio wave transmission source position estimation system capable of suppressing such estimation that there is a radio wave transmission source in the direction of an arriving wave angle of an indirect wave.SOLUTION: The present invention relates to a radio wave transmission source position estimation system that estimates the position of a radio wave transmission source based upon arrival wave angles of radio waves that a plurality of radio tag readers 1 measure, the radio wave transmission source position estimation system comprising: a candidate point determination part 240 which determines, when an arrival wave angle line as a straight line extended from a radio tag reader 1 at an arrival wave angle is generated for each radio tag reader 1, a point that the arrival wave angle line crosses as a position candidate point; an assumed arrival wave angle determination part 250 which determines, when the position candidate point is assumed to be the position of the radio wave transmission source, an assumed arrival wave angle which is an arrival wave angle of a radio wave assumed to be received by the radio tag reader 1 based upon radio wave reflecting body arrangement in a circumference of the radio tag reader 1 and the position candidate point; and a position estimation part 260 which determines, as the position of the radio wave transmission source, a position candidate point where the assumed arrival wave angle matches the arrival wave angle that the radio tag reader 1 measures most.SELECTED DRAWING: Figure 2
Inventors:
Ryota Kashihara
Kita Hayato
Kita Hayato
Application Number:
JP2016179788A
Publication Date:
May 20, 2020
Filing Date:
September 14, 2016
Export Citation:
Assignee:
Denso Wave Co., Ltd.
International Classes:
G01S5/04
Domestic Patent References:
| JP2009281793A | ||||
| JP2009085802A | ||||
| JP2003194907A | ||||
| JP2012118024A |
Foreign References:
| US20080191941 |
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo