{
  "$type": "site.standard.document",
  "description": "An absolute coordinate acquisition method is an absolute coordinate acquisition method for acquiring absolute coordinates of an underground pipeline, the method including: a marking step S of setting a plurality of reference points on a road surface and setting a measurement point on a pipeline…",
  "path": "/patents/1330740",
  "publishedAt": "2022-11-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C15/02",
    "NIPPON TELEGRAPH AND TELEPHONE CORPORATION"
  ],
  "textContent": "An absolute coordinate acquisition method is an absolute coordinate acquisition method for acquiring absolute coordinates of an underground pipeline, the method including: a marking step S of setting a plurality of reference points on a road surface and setting a measurement point on a pipeline installed inside an excavated ditch; a measurement step S of measuring absolute coordinates of the reference points; a relative position calculation step (S to S) of calculating relative positions of the reference points and the measurement point to a reference position; and an absolute coordinate calculation step S of calculating absolute coordinates of the measurement point based on the absolute coordinates of the reference points and the relative positions of the reference points and the measurement point.",
  "title": "ABSOLUTE COORDINATE ACQUISITION METHOD"
}