Title:
POSITIONING SYSTEM, POSITIONING DEVICE, AND COMPUTER PROGRAM
Document Type and Number:
WIPO Patent Application WO/2018/062433
Kind Code:
A1
Abstract:
A positioning system 1 includes: a plurality of receivers 20-A, 20-B, etc.; and a computation circuit 31 that receives data indicating the reception strength of signal waves from the receivers, calculates an inverse matrix of a four-dimensional or five-dimensional regular square matrix Q satisfying the relational expression, matrix Q ⋅ vector p = vector s (where, vector p is a vector that includes, as components, the coordinate components of a wave source position from a prescribed reference position, and vector s is a vector obtained by aligning the squares of distances from the prescribed reference position to the receivers), and also applies the calculated inverse matrix to the vector s to calculate the coordinate components of the wave source included in the vector p. The matrix Q and the vector p include a variable obtained by substituting a non-linear term with a linear term. The computation circuit 31 finds the inverse matrix of the matrix Q, which includes a row or column component obtained by multiplying the ratio of the reception strength of a prescribed receiver to the reception strengths of the other receivers with a second linear component.
Inventors:
YOSHIKAWA SHUICHI (JP)
KAMAGASAKO MASATOSHI (JP)
FUKUI YUICHI (JP)
SHIMOYAMADA HIROSHI (JP)
KAMAGASAKO MASATOSHI (JP)
FUKUI YUICHI (JP)
SHIMOYAMADA HIROSHI (JP)
Application Number:
PCT/JP2017/035343
Publication Date:
April 05, 2018
Filing Date:
September 28, 2017
Export Citation:
Assignee:
NIDEC CORP (JP)
KPNETWORKS LTD (JP)
KPNETWORKS LTD (JP)
International Classes:
G01S5/14
Foreign References:
| JP2016048205A | 2016-04-07 | |||
| JP2008249396A | 2008-10-16 | |||
| JP2017181166A | 2017-10-05 |
Attorney, Agent or Firm:
OKUDA Seiji (JP)
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