Surveying device comprising height measuring system and method for measuring a height

A surveying device for determining the position of a target point, the surveying device comprising:

• a means for orienting a target axis of the surveying device towards the target point;
• an angle-measuring functionality for the highly precise detection of the orientation of the target axis;
• an evaluation means for data storage;
• and
• a height measuring system for determining a height of the surveying device above the ground by means of triangulation, wherein the height measuring system comprises:
• a laser plummet for emitting a laser beam along a standing axis of the surveying device onto a ground point, and
• a detection unit comprising a line sensor for detecting a diffuse backscattering of the laser beam,
• wherein the height measuring system is designed for determining a height of the surveying device above the ground point based on a position of the diffuse backscattering on the line sensor.

A height measuring system for use in a surveying device for determining the position of a target point, wherein the height measuring system is designed for determining a height of the surveying device above the ground by means of triangulation, the height measuring system comprising:

• a laser plummet for emitting a laser beam along a standing axis of the surveying device onto a ground point;
• and
• a detection unit comprising a line sensor for detecting a diffuse backscattering of the laser beam,
• wherein the height measuring system is designed for determining a height of the surveying device above the ground point based on a position of the diffuse backscattering on the line sensor.

A method for measuring a height of a surveying device designed for determining the position of a target point above the ground by means of triangulation, the method comprising:

• positioning a line sensor on the surveying device at a known distance from a standing axis of the surveying device;
• emitting a laser beam along the standing axis onto a ground point;
• detecting a diffuse backscattering of the laser beam from the ground point by means of a line sensor;
• and
• determining the height based on a position of the diffuse backscattering on the line sensor and based on the known distance.