{
  "$type": "site.standard.document",
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  "description": "A surveying system has a total station and a target instrument, wherein the target instrument has an illuminating lamp, wherein a total station has an optical axis deflector capable of deflecting a distance measuring optical axis, a projecting direction detecting module for performing an angle…",
  "path": "/patents/1418708",
  "publishedAt": "2023-05-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C1/00",
    "TOPCON CORP [JP]"
  ],
  "textContent": "A surveying system has a total station and a target instrument, wherein the target instrument has an illuminating lamp, wherein a total station has an optical axis deflector capable of deflecting a distance measuring optical axis, a projecting direction detecting module for performing an angle measurement of the distance measuring optical axis, an image pickup unit, and an arithmetic control module for controlling a deflecting action of the optical axis deflector and a distance measuring action of a distance measuring unit, wherein the arithmetic control module is configured to detect an illumination light from an image acquired by the image pickup unit, to acquire a direction of the illuminating lamp based on a detection result, to make the optical axis deflector to scan with a distance measuring light around the acquired direction and to perform a distance measurement and an angle measurement along a scanning path, wherein the target instrument has a retro-reflector of a reflection sheet and has a reference point of the target instrument at a known position with respect to the illuminating lamp, wherein the arithmetic control module is configured to make the optical axis deflector to execute a two-dimensional scanning pattern, to detect the reflected distance measuring light at the time when the scanning pattern crosses the retro-reflector and to track the target instrument based on the detection result.",
  "title": "SURVEYING SYSTEM"
}