Title:
ABSOLUTE COORDINATE ACQUISITION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/255266
Kind Code:
A1
Abstract:
This absolute coordinate acquisition method for acquiring the absolute coordinates of an underground pipeline comprises: a marking step S101 for providing a plurality of reference points on a road surface and providing a measurement point on a pipeline installed inside an excavated ditch, a measurement step S102 for measuring the absolute coordinates of the reference points, a relative position calculation step S103-S105 for calculating the relative positions of the reference points and the measurement point in relation to a reference position, and an absolute coordinate calculation step S106 for calculating the absolute coordinates of the measurement point on the basis of the absolute coordinates of the reference points and the relative positions of the reference points and measurement point.
Inventors:
OGUCHI SUGURU (JP)
IRIYAMA YOSHIHIRO (JP)
HIYOSHI KENJI (JP)
IRIYAMA YOSHIHIRO (JP)
HIYOSHI KENJI (JP)
Application Number:
PCT/JP2019/024143
Publication Date:
December 24, 2020
Filing Date:
June 18, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G01C3/06
Domestic Patent References:
| WO2005040721A1 | 2005-05-06 | |||
| WO2018225363A1 | 2018-12-13 |
Foreign References:
| JP2005091298A | 2005-04-07 | |||
| JP2009270904A | 2009-11-19 | |||
| JPH0850180A | 1996-02-20 | |||
| JP2017015598A | 2017-01-19 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
Download PDF:
Previous Patent: RADAR SYSTEM, IMAGING METHOD, AND IMAGING PROGRAM
Next Patent: ANALYSIS DEVICE, METHOD, AND PROGRAM
Next Patent: ANALYSIS DEVICE, METHOD, AND PROGRAM