Spectra Precision Ab

Geotronics

Leif K-g Andersson

Lars A Ericsson

Rudolf Wiklund

Olle Engdahl

Mikael Herztman

N P Hertzman

The invention relates to an electronic distance measuring device which measures the propagation time to and from a target of a shor pulse of a trasmitted electromagnetic beam from a radiation source comprising a microchip laser, and comprising objective optical system ( ); for the reflected beam from the target and a detecting unit ( ) to which the received beam is transmitted. Means ( ) is provided for making the transmitted and the receiving electromagnetic beam coaxial. Means ( ) are also provided for focusing the received beam onto the detecting unit ( ). A means ( ) makes the transmitted electromagnetic beam simultaneously as narrow and as collimated as possible in order to get a well-defined radiation measuring spot on the target.

Electronic distance measuring device

A surveying system is presented comprising a surveying equipment and a radio navigation unit comprising a radio navigation antenna and a radio navigation receiver, both removably connectable both on the survey equipment and on a survey object. The object is provided with at least one target for the surveying equipment to be directed to. A removable panel co-operates with the radio navigation unit and with the survey equipment. The panel comprises a computer provided with a program system adapted for operating both the radio navigation receiver and the surveying equipment.

Surveying method and surveying system comprising a radio navigation unit

Electronic distance measuring instrument

Arrangement for performing position determination

Growing community of inventors

Taby, Sweden

Leif K-g Andersson