David Scott Reade

US Patent:

57573093, May 26, 1998

Filed:

Dec 18, 1996

Appl. No.:

8/769721

Inventors:

Harold Aurelius Brooks - Alexandria VA
Duane Roth - Ridgecrest CA
David Leslie Reade - Ridgecrest CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01S 7292

US Classification:

342 90

Abstract:

An iterative process to determine the wavelet function and combination of ales of the function which provides data where there is a large separability compared to the separability of the data set prior to processing. Wavelets are selected for inclusion in a library in accordance with predetermined criteria and then applied to a digitized signal by convolution to perform digital filtering. The convolution of each wavelet is performed for the number of times dictated by the coefficients of the wavelet for each of the input signal samples. Separability of the wavelet implemented digital filtration is calculated as a percentage for each wavelet. The separation data is stored in memory until the iterative process is applied to all wavelets. The separability data is then examined to identify the wavelet producing the greatest separation. The data separability is estimated using a likelihood ratio after the probability densities for each of two sets of profile data are estimated.