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:
Dec. 09, 2008
Filed:
Apr. 03, 2004
Thorsteinn Halldorsson, Munich, DE;
Michael Hofmann, Munich, DE;
Gerald Sobotta, Sauerlach, DE;
EADS Deutschland GmbH, Ottobrunn, DE;
Abstract
In the case of a method of detecting wind velocities by means of a Doppler-lidar system (), a laser beam of a defined frequency generated by means of a laser () is emitted by a transmitting device () toward a space area and the light backscattered from the space area is received by means of a receiving telescope (). For determining a Doppler shift, an interferogram is generated by means of an interferometer (), the intensity distribution of the interferogram being directly measured by means of a photodetector (). The measured intensity distribution is compared with one or more reference patterns which had previously been determined for defined parameters and are filed in a memory device (). From the comparison, the Doppler shift is determined as a measurement for the wind velocity. The Doppler-lidar system () comprises an analyzing unit () for implementing the method, having a comparison unit () for the comparison of reference patterns with the measured interferogram.