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. 19, 2009
Filed:
Sep. 06, 2006
Christian Chaure, Locmaria Plouzane, FR;
Frédéric Barbaresco, Montgeron, FR;
Christian Chaure, Locmaria Plouzane, FR;
Frédéric Barbaresco, Montgeron, FR;
Thales, Neuilly sur Seine, FR;
Abstract
A high resolution Doppler analysis of a radiofrequency signal is exemplified by the analysis of air mass movement using meteorological radar. A high resolution spectral analysis method for a remotely sampled periodic radiofrequency signal, based on the application of a trellis autoregressive filtering Burg algorithm, is used to determine the natural frequencies of the received signal for each distance cell based on the determination of an optimum set of reflection coefficients of the signal. Reflection coefficients are the object of a regularization operation aiming to limit the numerical instabilities of the calculations. These regularized reflection coefficients are used to estimate the effective order of the identification model of the trellis filter, and to determine the natural frequencies of the signal by determining the arguments of the complex roots of the polynomial representing the transfer function of the trellis filter.