Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1982-03-30
1986-12-16
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
367 43, 367 45, 367 42, 364421, G01V 136
Patent
active
046302425
ABSTRACT:
A method is disclosed for estimating the impulse response of the earth from Vibroseis data. Based on a time domain system identification approach, the earth's impulse response is estimated by operating on the seismic trace data and the vibrator pilot. Two implementations are discussed. The first is an adaptive method using a sliding data window and the uncorrelated trace data. Preferably, the process used to control the adaptation is the fast Kalman estimation (FKE) technique. This technique, based on recursive least squares, has a fast convergence rate and desirable computational requirements. The second implementation is non-adaptive. It uses the Levinson recursion technique to compute the Wiener filter solution based on the pilot autocorrelation function and the correlated trace data. Simulations demonstrate the capability of the system identification model to resolve reflection events.
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Amoco Corporation
Lobo Ian J.
Moskowitz Nelson
Stanley Timothy D.
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