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:
Feb. 18, 2014
Filed:
May. 29, 2009
Thomas Jensen, Rorschach, CH;
Marcel Rohner, Heiden, CH;
Thomas Jensen, Rorschach, CH;
Marcel Rohner, Heiden, CH;
Leica Geosystems AG, Heerbrugg, CH;
Abstract
In a distance-measuring method, chirped laser radiation with two separable radiation components is emitted to at least one target to be surveyed and via a local oscillator path, the radiation components having an opposite chirp as a time dependency of the modulated wavelengths (λ, λ). After reception of the laser radiation scattered back from the target and passed via the local oscillator path, the laser radiation received is converted into signals and the distance to the at least one target is determined from the signals on the basis of interferometric mixing, separation of the radiation components being effected on the basis of their spectral characteristic.