{
  "$type": "site.standard.document",
  "description": "Methods and apparatus for: (a) the correction of one or more elements determined from a first set of continuous gyro and accelerometer measurements comprising using a second set of discontinuously measured higher accuracy accelerometer measurements doubly integrated in an inertial coordinate…",
  "path": "/patents/1073560",
  "publishedAt": "2005-10-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C21/185",
    "NORTHROP GRUMMAN CORP [US]"
  ],
  "textContent": "Methods and apparatus for: (a) the correction of one or more elements determined from a first set of continuous gyro and accelerometer measurements comprising using a second set of discontinuously measured higher accuracy accelerometer measurements doubly integrated in an inertial coordinate system, (b) determining relative movement of a vehicle (53) using a first set of acceleration measurements (55) that do not include components of acceleration caused by the Earth's gravitational field, and a second set of acceleration measurements (59) that do include components of acceleration caused by the Earth's gravitational field; and (c) correcting errors in an inertial navigation system positioned in a vehicle comprising using independently measured changes in position of the vehicle relative to an inertial coordinate frame.",
  "title": "Inertial navigation system error correction"
}