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The AAPG/Datapages Combined Publications Database
Showing 17 Results. Searched 200,293 documents.
Abstracts: Padé Approximation for Analyzing Multiple Reflections; #90173 (2015)
Dali Zhang, Michael P. Lamoureux, and Gary F. Margrave
Search and Discovery.com
... [email protected] Summary The paper considers rational Padé approximation of the z-transform function of a time-dependent minimum phase signal. We present...
2015
Abstract: Radiometric Surveying Applied to an Evaluation of Sorrento Field, Cheyenne County, Colorado, by Alton V. Gallager; #90952 (1996).
Search and Discovery.com
1996
Phase Unwrapping: A Review of Methods and a Novel Technique
Sam T. Kaplan
Search and Discovery.com
... algorithm that operates in the range of the z transform (often referred to as the w plane). In this domain, the branch-cut that is associated...
Unknown
Phase Unwrapping: A Review of Methods and a Novel Technique
Sam T. Kaplan
Search and Discovery.com
... algorithm that operates in the range of the z transform (often referred to as the w plane). In this domain, the branch-cut that is associated...
Unknown
Efficient and accurate velocity building from Gramian-constrained multiphysics reflection and transmission data
Jide Nosakare Ogunbo
International Meeting for Applied Geoscience and Energy (IMAGE)
..., the use of the convolutional model (Buland and Omre, 2003), by the z-transform, is readily more practical than the seismic operator for either...
2022
Forensic GPR anti-human landmine accurate detection by Gramian constrained joint inversion of the monostatic reflection and transmission radargrams
Jide Nosakare Ogunbo, Changsoo Shin, Sang-Wook Kim, Sang-Hyun Kim
International Meeting for Applied Geoscience and Energy (IMAGE)
... and transmission radargrams simulated over buried anti-human (non-conductive) landmines with the Gramian constraints. Firstly, the z-transform method...
2022
Abstract: Modified Euclids Blind Deconvolution Via Sparsity Optimization on a Sphere; #90187 (2014)
Nasser Kazemi and Mauricio D. Sacchi
Search and Discovery.com
... factors of the z-transform of the source embedded in a group of seismograms with different reflectivity sequences. The problem leads to the estimation...
2014
Abstracts: Revisiting Homomorphic Wavelet Estimation and Phase Unwrapping; #90173 (2015)
Roberto H. Herrera and Mirko van der Baan
Search and Discovery.com
.... Steiglitz and Dickinson (1977), suggested to compute the unwrapped phase by adding together the phase contribution of each root of the Z-transform...
2015
Shaping regularization by fast explicit diffusion
Sergey Fomel
International Meeting for Applied Geoscience and Energy (IMAGE)
...fined by its Z-transform (Claerbout, 1992) as follows: TN (Z) = BN (Z) BN (1/Z) = 1 − ZN 1 − Z −N N 2 (1 − Z) (1 − 1/Z) , (1) where BN (Z...
2022
Radiometric Surveying Applied to an Evaluation of Sorrento Field, Cheyenne County, Colorado
A.V. Gallagher
Montana Geological Society
... as the source and receiver lines of the 3-D seismic program. Profiles were plotted for each line. Data was normalized and Z-Transform...
1996
Abstract: Blind Surface Consistent Wavelet Estimation; #90187 (2014)
E. Bongajum, N. Kazemi, and M. D. Sacchi
Search and Discovery.com
... model: Di j (z) = Si (z)G j (z)Ri j (z) (1) where Di j (z), Si (z), G j (z), Ri j (z) represent the z-transform of the noise-free seismic trace...
2014
Abstracts: Impedance Inversion of Phase Corrected Data- A Case Study; #90173 (2015)
Somanath Misra and Satinder Chopra
Search and Discovery.com
... wavelet and an all-pass operator. The Z-transform of an all-pass operator is written as F (Z ) Z p B( Z 1 ) , B( Z ) (1) where bt b0 , b1 , b2...
2015
Spectral Decomposition: Extending the Limits of Seismic Resolution for Reservoir Delineation
Sunu H. Praptono, Bambang Murti, Dylan Mair
Indonesian Petroleum Association
... (Maximum Entropy Method Transform). The latter method, based on a Z-transform, is potentially more stable when analyzing very short time windows...
2003
Operator chains and seismic data decomposition
Sergey Fomel
International Meeting for Applied Geoscience and Energy (IMAGE)
... nonstationary autoregression (Fomel, 2009). Representing the filter as a Z-transform polynomial F(Z) = = (1 − Z/Z1 ) (1 − Z/Z2 ) · · · (1 − Z/ZN ) 1 + a1 Z...
2022
Least-squares non-stationary triangle smoothing
Reem F. Alomar, Sergey Fomel
International Meeting for Applied Geoscience and Energy (IMAGE)
... SMOOTHING A box filter can be defined in the Z-transform notation as follows (Claerbout, 1992): B(Z) = 1 (1 + Z + Z 2 + · · · + Z N N 1 )= 1 ZN , N(1 Z) Z...
2022
Abstract: Seismic Data Decomposition into Spectral Components Using Regularized Nonstationary Autoregression; #90187 (2014)
Sergey Fomel
Search and Discovery.com
...(t) = A exp[ t] (with real or complex ) is predictable by a two-point prediction-error filter (1,- exp[ t]), or, in the Z-transform notation, (5) F0 (Z...
2014
Abstract: Wavelet Estimation by Non-Linear Optimization of All-Pass Operators; #90211 (2015)
Somanath Misra and Mauricio Sacchi
Search and Discovery.com
... from the whitened data. The Z-transform of the all-pass wavelet ( F(Z) ) that needs to be estimated can be written as (Porsani and Ursin, 1998...
2015