Noise reduction in signal processing by sequency diversity

Details Noise reduction in signal processing by sequency diversity Noise reduction in signal processing by sequency diversity

G - Physics

01

S

349/31, 349/42,

G01S 13/86 (2006.01) G01S 13/534 (2006.01)

Patent

CA 2013858

TITLE NOISE REDUCTION IN SIGNAL PROCESSING BY SEQUENCY DIVERSITY INVENTOR Jean-Daniel Aussel ABSTRACT OF THE DISCLOSURE To improve the detection of targets in clutter, tech- niques known as frequency diversity or agility have been developed for radar, non-destructive evaluation, digital image processing and medical imaging. These techniques are based on the different statis- tical properties of the target signal and the clutter noise as a function of the frequency. The decomposition of signal over such orthogonal functions as Walsh and Haar functions has led to sequency analysis. According to the present invention, the decomposition of a received signal over a set of signals of different sequency, called sequency diverse components, has shown that the target signal and the clutter noise have different statistical sequency properties. As a result the clutter noise can be reduced by statistical processing of the sequency diverse components.

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