Physics
Scientific paper
Mar 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000soph..192..203r&link_type=abstract
Solar Physics, v. 192, Issue 1/2, p. 203-210 (2000).
Physics
32
Scientific paper
Calculation of time-distance curves in helioseismology can be formulated as a blind-deconvolution (or system identification) problem. A classical solution in one-dimensional space is Kolmogorov's Fourier domain spectral-factorization method. The helical coordinate system maps two-dimensions to one. Likewise a three-dimensional volume is representable as a concatenation of many one-dimensional signals. Thus concatenating a cube of helioseismic data into a very long 1-D signal and applying Kolmogorov's factorization, we find we can construct the three-dimensional causal impulse response of the Sun by deconcatenating the Kolmogorov result. Time-distance curves calculated in this way have the same spatial and temporal bandwidth as the original data, rather than the decreased bandwidth obtained obtained by cross-correlating traces. Additionally, the spectral factorization impulse response is minimum phase, as opposed to the zero phase time-distance curves produced by cross-correlation.
Claerbout Jon F.
Rickett J. E.
No associations
LandOfFree
Calculation of the sun's acoustic impulse response by multi-dimensional spectral factorization does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Calculation of the sun's acoustic impulse response by multi-dimensional spectral factorization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calculation of the sun's acoustic impulse response by multi-dimensional spectral factorization will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1824557