Communications: directive radio wave systems and devices (e.g. – Return signal controls radar system – Receiver
Patent
1994-05-27
1996-01-02
Eldred, J. Woodrow
Communications: directive radio wave systems and devices (e.g.,
Return signal controls radar system
Receiver
342159, 342162, 342175, 342195, 364485, 364487, G01S 1300
Patent
active
054812690
ABSTRACT:
A classifier employing general frame wavelets for improving target recognition while decreasing computational intensity is disclosed. A wavelet selection means compares a portion of a time dependent input signal from a receiver with a set of sample wavelets, each wavelet being bandpass limited, locally supported, and mean zero, and selects a prototype wavelet resembling the input portion. A resolving means expands the prototype wavelet onto a basis of wavelet functions having variations in scale and delay, and resolves the input signal onto the basis of functions. A regionpass filter identifies a region from a grid of resolved coefficients that contains features of a target from the input signal and discards coefficients outside the region. A separability filter passes select coefficients from a scale band within the identified region where separability among known targets is high. A comparator compares the selected coefficients with an exemplar of known targets to indicate a recognition of the target.
REFERENCES:
patent: 5000183 (1991-03-01), Bonnefous
patent: 5027658 (1991-07-01), Anderson
patent: 5056066 (1991-10-01), Howard
patent: 5124930 (1992-06-01), Nicolas et al.
patent: 5247448 (1993-09-01), Liu
patent: 5417215 (1995-05-01), Evans et al.
patent: 5420891 (1995-05-01), Akansu
Daubechies, "Orthonormal Bases of Compactly Supported Wavelets", AT&T Bell Laboratories, pp. 911-995.
Rioul et al., "Wavelets and Signal Processing", IEEE SP Magazine, Oct. 1991, pp. 14-38.
Strang, "Wavelets and Dilation Equations: A Brief Introduction", SIAM Review, vol. 31, No. 4, Dec. 1989, pp. 614-627.
Mallet, "A Theory For Multiresolution Signal Decomposition: The Wavelet Representation", 1989 IEEE, pp. 675-693.
Rioul et al., "Fast Algorithms For Discrete And Continuous Wavelet Transforms", IEEE Transactions on Information Theory, vol. 38, No. 2, Mar. 1992, pp. 569-586.
Daubechies, "Ten Lectures On Wavelets", Rutgers University and AT&T Bell Laboratories, Society For Industrial And Applied Mathematics, Philadelphia, Pa., 1992, pp. 1-104.
Grossmann et al., "Decomposition Of Hardy Functions Into Square Integrable Wavelets Of Constant Shape", SIAM J. Math. Anal., vol. 15, No. 4, Jul. 1984, pp. 723-736.
Bendor Giora A.
Brinsley James R.
Cheesman, III Guy W.
Imhoff Scott A.
Morici Martin M.
Eldred J. Woodrow
Westinghouse Electric Corp.
LandOfFree
General frame wavelet classifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with General frame wavelet classifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and General frame wavelet classifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-238506