{
  "$type": "site.standard.document",
  "description": "Implementations of the present invention contemplate obtaining a more accurate estimated horizontal position error (EHPE) under conditions in which the telematics unit of a vehicle cannot receive GNSS signals. In particular, the invention contemplates determining that a vehicle is entering a…",
  "path": "/patents/1141977",
  "publishedAt": "2015-05-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/206",
    "GENERAL MOTORS LLC"
  ],
  "textContent": "Implementations of the present invention contemplate obtaining a more accurate estimated horizontal position error (EHPE) under conditions in which the telematics unit of a vehicle cannot receive GNSS signals. In particular, the invention contemplates determining that a vehicle is entering a parking garage and obtaining a more accurate estimated horizontal position error (EHPE) of the vehicle in the parking garage when GNSS signals are unavailable.",
  "title": "PARKING GARAGE ENVIRONMENT DETECTION AND EHPE DETERMINATION FOR VEHICULAR NAVIGATION"
}