Study on uncertainty of inversion and resolution limit in the presence of noise

• Autorzy: Luo C. , Wang S. , Yuan S.

Identyfikatory

DOI

10.1007/s11600-018-0196-0

• Języki publikacji: EN

Abstrakty

EN

This study analyzed the uncertainty of inversion and the resolution limit in the presence of noise by means of statistical experiments. The exhaustive method is adopted to obtain the global optimal solution in each experiment. We found that even with small level of noise, solutions fluctuate in a large range for the thin bed. The distribution of solutions in the presence of noise is closely related to the spread of the cost function in the absence of noise. As a result, the area of a certain neighborhood around the true solution on the spread of the cost function in the absence of noise is used to evaluate the uncertainty of inversion and the resolution limit in the presence of noise. In the case that the SNR (signal-to-noise ratio) is 5 in this study, solutions focus around the true solution with a very small uncertainty only when the bed thickness is greater than the reciprocal of the double predominant frequency of the convoluting wavelet.

Słowa kluczowe

EN

cost function; resolution limit; uncertainty of inversion

PL

funkcja kosztu

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2018
• Tom: Vol. 66, no. 5
• Strony: 1011--1018
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Luo C.

• .China University of Petroleum Beijing, State Key Laboratory of Petroleum Resources and Prospecting CNPC Key Laboratory of Geophysical Prospecting Beijing China

autor

Wang S.

• .China University of Petroleum Beijing, State Key Laboratory of Petroleum Resources and Prospecting CNPC Key Laboratory of Geophysical Prospecting Beijing China

autor

Yuan S.

• .China University of Petroleum Beijing, State Key Laboratory of Petroleum Resources and Prospecting CNPC Key Laboratory of Geophysical Prospecting Beijing China

Bibliografia

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