Leica Geosystems Ag

J&uuml;rg Hinderling

Paul Benz

Markus Geser

Roland Graf

Markus Hammerer

Gerhard Bayer

Marcel Buerki

Marco Landert

Bruno Pfiffner

G&uuml;nther Hanns

In geodetic measuring systems and measuring devices ( ) there exists a need to find and detect, rapidly and automatically, marker points to be measured that are provided with a marker (retro reflector) ( ). For the rapid detection, identification and determination of the horizontal angles of such a marker, even at greater distances, electromagnetic radiation in the form of a vertical fan ( ) is transmitted by a transmitter unit ( ) whose radiation is received, after reflection from the marker, by a receiving unit with a view field in the form of a vertical fan. By analyzing the signal strength and the apparent object size, a plausibility test and a reliable suppression of foreign or interference markers can be achieved. Such a marker searching device is marked by a selective analysis of specific characteristics of a marker detected. On the basis of the plausibility test, a rapid, certain and robust location of markers is possible.

Process and device for the automatic location of reference markers

A device determines and subsequently corrects the dispersive influence on a measurement made according to the principles of phase or pulse modulation along a visible range. The device has an element for emission of electro-magnetic radiation with two carrier wavelengths in the border regions of the visible spectrum. After passing through a volume of atmosphere to be probed, and reflection, the radiation is received and the dispersive influence, for instance, on the distance measurements, is calculated and corrected.

Device for determining the influence of dispersion on a measurement

Tacheometer telescope

Growing community of inventors

Marbach, Switzerland

Jürg Hinderling

Growing community of inventors

Marbach, Switzerland

J&uuml;rg Hinderling

Jürg Hinderling