Robust estimation method for determining when subsequent data pr

Details Robust estimation method for determining when subsequent data pr Robust estimation method for determining when subsequent data pr

1983-01-10

1985-09-24

Smith, Jerry

Boots, shoes, and leggings

367 20, 367 21, 367 39, 367100, G01V 130, G01V 136

Patent

active

045436320

ABSTRACT:
A method is disclosed for determining if sign-clipped variations of full-waveform traces can be used in subsequent cross-correlation processing without undue hardship. In accordance with one aspect, the present invention examines skewness of the amplitude spectrum of the full waveform. If the former significantly differs from conventional Gaussian distribution over the frequency range of interest, i.e., the amplitude spectrum is non-Gaussian, sign-clipped versions thereof can be used in subsequent cross-correlation processing without undue loss in processing accuracy. In another aspect, the present invention is used to edit a series of traces, one at a time, gathered by a large multichannel collection system. In this aspect, the different spectral noise estimates, including cross-correlation estimates generated from sign-clipped versions of the full-waveform traces, are advantageously used.

REFERENCES:
patent: 4001768 (1977-01-01), Fort et al.
patent: 4346461 (1982-08-01), Muir
patent: 4479183 (1984-10-01), Ergas

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