{
  "$type": "site.standard.document",
  "description": "An environment map production device includes: a calculation unit that calculates an evaluation value of validity of a positioning solution based on data obtained by measurement by a vehicle traveling in a certain area in a plurality of time zones using GNSS for each of a plurality of segments that…",
  "path": "/patents/1381380",
  "publishedAt": "2026-04-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/3848",
    "NTT, Inc."
  ],
  "textContent": "An environment map production device includes: a calculation unit that calculates an evaluation value of validity of a positioning solution based on data obtained by measurement by a vehicle traveling in a certain area in a plurality of time zones using GNSS for each of a plurality of segments that divides the area; and a sort out unit that sorts out, on a basis of the evaluation value, the positioning solution used for production of an environment map and the positioning solution not used for production of an environment map, thereby efficiently producing an environment map and improving the quality of the environment map.",
  "title": "ENVIRONMENT MAP GENERATION APPARATUS, ENVIRONMENT MAP GENERATION METHOD AND PROGRAM"
}