{
  "$type": "site.standard.document",
  "description": "A position measuring system, comprising a rotary laser system having a projection optical system provided at a known point and for projecting a laser beam with a spreading angle in an up-to-bottom direction by rotary irradiation and a photodetection optical system for guiding a reflection light of…",
  "path": "/patents/1071623",
  "publishedAt": "2005-12-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "E02F3/847",
    "TOPCON CORP [JP]"
  ],
  "textContent": "A position measuring system, comprising a rotary laser system having a projection optical system provided at a known point and for projecting a laser beam with a spreading angle in an up-to-bottom direction by rotary irradiation and a photodetection optical system for guiding a reflection light of the laser beam toward an image photodetector, an object having a reflecting body to reflect the laser beam toward the rotary laser system, a GPS position measuring unit for obtaining a position of the object, and a control arithmetic operation unit for calculating an elevation angle with respect to the object from a photodetecting position of the reflection light on the image photodetector and for calculating a position and a height of the object based on position information of the rotary laser system, position information from the GPS position measuring unit and based on the elevation angle.",
  "title": "Position measuring system"
}