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Accession Number:
AD0485031
Title:
THE CROSSWISE SUM METHOD FOR MAXIMUM-LIKELIHOOD FILTERING OF LASA SEISMOGRAMS.
Corporate Author:
TELEDYNE INDUSTRIES INC ALEXANDRIA VA EARTH SCIENCES DIV
Report Date:
1966-06-09
Abstract:
The two earthquakes reported earlier, 10 November 2965 and 25 November 1965, were processed and analyzed using the crosswise sums method. With this method we first form 25 traces, each the phased sum of 21 prefiltered subarray traces, one from each subarray and then maximum-likelihood filter the set. The final outputs from the maximum-likelihood filter are 1.5 to 4 db down in signal-to-noise ratio from the phased sum of all of LASA. The signals are remarkably similar on these 25 crosswise sum traces so much that the symmetrical maximum-likelihood filter introduced no precursor. Author
Descriptive Note:
Scientific rept.,
Pages:
0011
Contract Number:
AF 33(657)-15919
Contract Number 2:
ARPA Order-624
File Size:
0.00MB
