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:
Aug. 25, 2009
Filed:
Mar. 16, 2005
Bertrand Baillon, Pins Justaret, FR;
Jean-pierre Schlotterbeck, Rochefort-Samson, FR;
Xavier Lacondemine, Valence, FR;
Alain Renard, Chabeuil, FR;
Bertrand Baillon, Pins Justaret, FR;
Jean-Pierre Schlotterbeck, Rochefort-Samson, FR;
Xavier Lacondemine, Valence, FR;
Alain Renard, Chabeuil, FR;
Thales, , FR;
Abstract
The invention relates to a device for measuring a Doppler frequency shift, including an optical signal channel delivering a signal light beam illuminating a reference medium; and a reference channel delivering a reference light beam for detecting the Doppler frequency shift. The frequency shift is determined from the difference in frequency between the light signal illuminating the reference medium and the light beam returned by the reference medium. The device includes at least two light radiation sources, preferably lasers, with one light radiating source generating the light beam for the signal channel and the other source generating the light beam for the reference channel.