{
  "$type": "site.standard.document",
  "description": "The magnetic north detecting device comprises: a 3-dimensional geomagnetism sensor unit including three geomagnetism sensors for detecting respective components of a geomagnetic field intensity in respective directions of three perpendicular coordinate axes; and a 3-dimensional operation functional…",
  "path": "/patents/1077910",
  "publishedAt": "2005-05-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C17/28",
    "FOUNDATION THE RES INSTITUTEOF [JP]"
  ],
  "textContent": "The magnetic north detecting device comprises: a 3-dimensional geomagnetism sensor unit including three geomagnetism sensors for detecting respective components of a geomagnetic field intensity in respective directions of three perpendicular coordinate axes; and a 3-dimensional operation functional section for carrying out an operation on the basis of the components of the geomagnetic field intensity detected by the geomagnetism sensors, and calculating a magnetic north direction of the geomagnetism, and the 3-dimensional operation functional section carries out the operation and calculates the magnetic north direction of the geomagnetism, based on two assumptions that: (i) at least one axis of three coordinate axes of the 3-dimensional geomagnetism sensor unit is level to the earth surface; and (ii) an angle of a geomagnetic field vector which is calculated from the detected components of the geomagnetic field intensity, referring to the earth surface, coincides with a dip angle of the geomagnetism which is assumed beforehand.",
  "title": "Magnetic north detecting device and magnetic north detecting method"
}