Title:
INFORMATION PROCESSOR AND POSITIONAL INFORMATION CALCULATION PROGRAM
Document Type and Number:
Japanese Patent JP2017003278
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To calculate the position of an information processor with high accuracy by using signal strength from a single signal transmission device.SOLUTION: A first calculation part (16) calculates a first vector that is directed from the position of an own device at a first time point to the position of the own device at a second time point on the basis of a signal from a sensor mounted on the own device. A detection part (74, 12) detects the strength of a signal received from a signal transmission device whose position is known. A second calculation part (18) calculates a first trajectory representing a distribution of estimated positions of the own device at the first time point on the basis of strength detected at the first time point by a detection part, and also calculates a second trajectory representing a distribution of estimated positions of the own device at the second time point on the basis of strength detected at the second time point by the detection part. A third calculation part (20) calculates the position of an end point of the first vector when the end point of the first vector overlaps the second trajectory as the position of the own device at the second time point when the start point of the first vector is overlapped on the first trajectory.SELECTED DRAWING: Figure 1
Inventors:
OKUTSU AKIHIKO
Application Number:
JP2015114089A
Publication Date:
January 05, 2017
Filing Date:
June 04, 2015
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
G01S5/02; G01C21/26; G01C21/28
Domestic Patent References:
| JP2007127584A | 2007-05-24 | |||
| JPH11298946A | 1999-10-29 |
Foreign References:
| US20130158867A1 | 2013-06-20 |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Hiroshi Fukuda
Kato Kazunori
Hiroshi Fukuda