{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "An error correcting device 34 is mounted in a working vehicle and corrects an error in measurement value of a sensor device having a GNSS sensor and a gyro sensor. The error correcting device 34 includes: a first acquisition part 341 that acquires a vehicle position of the working vehicle in a…",
  "path": "/patents/1418465",
  "publishedAt": "2022-12-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "A01B69/008",
    "TOKYO KEIKI INC [JP]"
  ],
  "textContent": "An error correcting device 34 is mounted in a working vehicle and corrects an error in measurement value of a sensor device having a GNSS sensor and a gyro sensor. The error correcting device 34 includes: a first acquisition part 341 that acquires a vehicle position of the working vehicle in a local coordinate system, the vehicle position being measured by the GNSS sensor, and an angular velocity in a sensor coordinate system having three axes set with reference to the sensor device, the angular velocity being measured by the gyro sensor; a coordinate transformation part 345 that coordinate-transforms, based on the acquired angular velocity, a relative position vector of a measurement position in the sensor coordinate system at which the sensor device is provided, the relative position vector extending from a set position set at a different position from the position of the sensor device in the sensor coordinate system, to a relative position vector in the local coordinate system; and a vehicle position correcting part 346 that calculates a position vector P of the set position extending from an origin of the local coordinate system according to an expression of P = P - L, wherein P denotes a position vector of the measurement position and L denotes the coordinate-transformed relative position vector, to correct an error in the vehicle position measured by the GNSS sensor.",
  "title": "ERROR CORRECTION APPARATUS"
}