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A wavelet transform approach to inverse problems of Vandermonde type systems

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2 Author(s)
Yoda, K. ; Adv. Technol. R&D Center, Mitsubishi Electr. Corp., Amagasaki, Japan ; Saito, Y.

Inverse problems of Vandermonde type systems have been solved using the discrete wavelet transform. The inverse matrices of the transformed subsystems were calculated, thereby locating the largest well-conditioned submatrix. The reduced system was solved and the solution was inversely transformed. Results were compared between two different wavelet basis functions, indicating that Daubechies-4 wavelets lead to much more accurate solutions than Haar wavelets. Three simple techniques for eliminating another systematic noise are also proposed to further improve the accuracy of the final solution

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Magnetics, IEEE Transactions on  (Volume:33 ,  Issue: 2 )