{
  "$type": "site.standard.document",
  "description": "A method is provided for determining an Estimated Horizontal Position Error (EHPE) with respect to a navigation system onboard a telematics-equipped vehicle by utilizing a Global Navigation Satellite System (GNSS) navigation system in combination with a dead reckoning (DR) navigation system. The…",
  "path": "/patents/1128174",
  "publishedAt": "2014-07-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/00",
    "General Motors LLC"
  ],
  "textContent": "A method is provided for determining an Estimated Horizontal Position Error (EHPE) with respect to a navigation system onboard a telematics-equipped vehicle by utilizing a Global Navigation Satellite System (GNSS) navigation system in combination with a dead reckoning (DR) navigation system. The method includes: receiving GNSS positioning information from the GNSS navigation system; receiving DR positioning information from the DR navigation system; applying, by a telematics unit, a Kalman filter to the GNSS positioning information and the DR positioning information; calculating, by the telematics unit, the EHPE corresponding to the navigation system onboard the telematics-equipped vehicle based on the GNSS positioning information, the DR positioning information, and the Kalman filter.",
  "title": "HIGH FIDELITY HORIZONTAL POSITION ERROR ESTIMATION FOR VEHICULAR GPS/DR NAVIGATION"
}