{
  "$type": "site.standard.document",
  "description": "Map data (5) stored in a memory includes normal road data and additional road data for predetermined regions along a highway. A current location of a moving body is detected by sensor(s) (1,2,3,4). The normal road data or additional road data is selected on the basis of the detected current…",
  "path": "/patents/1100453",
  "publishedAt": "2002-11-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/30",
    "PIONEER CORP [JP]"
  ],
  "textContent": "Map data (5) stored in a memory includes normal road data and additional road data for predetermined regions along a highway. A current location of a moving body is detected by sensor(s) (1,2,3,4). The normal road data or additional road data is selected on the basis of the detected current location of the moving body. A map matching process is performed with the selected road data. Accordingly, the current location of the moving body is determined in the map matching process with high accuracy.",
  "title": "Navigation apparatus"
}