The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2012
Filed:
Nov. 13, 2006
Stephan Seeger, Höhenkirchen-Siegertsbrunn, DE;
Stephan Seeger, Höhenkirchen-Siegertsbrunn, DE;
Leica Geosystems AG, Heerbrugg, CH;
Abstract
In order to derive distance information according to the phase measuring principle, a periodic signal with at least two, in particular modulated, wavelengths λare transmitted to two or more objects, their reflections are received again and the associated phases φare determined and decomposed into their individual object phases φwhich are assigned to the J objects. In order to resolve phase ambiguities, an ambiguity interval in which at least one object is located is divided into cells () with a defined width, with each cell () being assigned a counter reading and a distance. The counter reading is incremented for the cells () which are assigned to a possible object distance, with the incrementation being carried out for a periodicity sequential variable and for all the phases. An absolute phase or a true object distance Dfrom the at least two objects is determined from the distribution of the counter readings.