{
  "$type": "site.standard.document",
  "description": "The present invention relates to a GPS/dead-reckoning combination system and an operation method of the same. The GPS/dead-reckoning combination system includes a GPS receiver that receives an absolute position data of a moving unit from a GPS; an inertia sensor that measures a displacement of the…",
  "path": "/patents/1079692",
  "publishedAt": "2005-03-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/165",
    "LG ELECTRONICS INC [KR]"
  ],
  "textContent": "The present invention relates to a GPS/dead-reckoning combination system and an operation method of the same. The GPS/dead-reckoning combination system includes a GPS receiver that receives an absolute position data of a moving unit from a GPS; an inertia sensor that measures a displacement of the moving unit based on a dead-reckoning method; a forward and backward movement judging unit that judges a state data concerning a forward or backward movement of the moving unit; a dead-reckoning processor that measures a running distance and a position of the moving unit based on a dead-reckoning method in reference with the data provided from the inertia sensor and the forward and backward movement judging unit; and a computation unit that estimates the current position of the moving unit in reference with the data from the GPS receiver and the dead-reckoning processor.",
  "title": "GPS/dead reckoning combination system and operating method thereof"
}