Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Reexamination Certificate
2004-01-27
2008-09-30
Shrivastav, Brij B. (Department: 2831)
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
C324S312000, C324S311000, C700S094000
Reexamination Certificate
active
07429860
ABSTRACT:
A windowed noise reduction technique is presented that allows a noise-reduced spectrum of satisfactory accuracy to be recovered from original noisy spectroscopic data, while acquiring a significantly reduced number of transient acquisitions. The signal-averaged, decimated signal is written as a sum of a noisefree component and a noise component, and a vector space that contains a noisefree subspace and a noise subspace is created using these decimated signals. A correlation matrix is constructed in this vector space, and diagonalized to yield the singular values. The appearance of a clear gap between the noisefree singular values and the noise singular values, in a singular value graph, and the stability of the gap, supplies the criteria for determining that a sufficient number of iterations has been performed.
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Kunikeev Sharif
Taylor Howard S.
McDermott Will & Emery LLP
Shrivastav Brij B.
University of Southern California
Vaughn Megann E
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