scholarly journals High-order nonlinear response correction method for infrared radiation detector

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
◽  
◽  
◽  
Keyword(s):  
Infrared Radiation ◽  
Nonlinear Response ◽  
Radiation Detector ◽  
Correction Method ◽  
High Order ◽  
Response Correction

Hydrocarbon identification using the AVO response correction method based on high-resolution complex spectral decomposition

2020 ◽  
Vol 8 (1) ◽  
pp. SA49-SA61
Author(s):  
Huihuang Tan ◽  
Donghong Zhou ◽  
Shengqiang Zhang ◽  
Zhijun Zhang ◽  
Xinyi Duan ◽  
...  
Keyword(s):  
High Resolution ◽  
Seismic Data ◽  
Spectral Decomposition ◽  
Oil And Gas ◽  
Low Frequency ◽  
Seismic Signal ◽  
Correction Method ◽  
Bohai Bay ◽  
Oil And Gas Exploration ◽  
Response Correction

Amplitude-variation-with-offset (AVO) technique is one of the primary quantitative hydrocarbon discrimination methods with prestack seismic data. However, the prestack seismic data are usually have low data quality, such as nonflat gathers and nonpreserved amplitude due to absorption, attenuation, and/or many other reasons, which usually lead to a wrong AVO response. The Neogene formations in the Huanghekou area of the Bohai Bay Basin are unconsolidated clastics with a high average porosity, and we find that the attenuation on seismic signal is very strong, which causes an inconsistency of AVO responses between seismic gathers and its corresponding synthetics. Our research results indicate that the synthetic AVO response can match the field seismic gathers in the low-frequency end, but not in the high-frequency components. Thus, we have developed an AVO response correction method based on high-resolution complex spectral decomposition and low-frequency constraint. This method can help to achieve a correct high-resolution AVO response. Its application in Bohai oil fields reveals that it is an efficient way to identify hydrocarbons in rocks, which provides an important technique for support in oil and gas exploration and production in this area.

Development of High-Order Scheme in Unstructured Mesh for Direct Numerical Simulations

2013 ◽  
Author(s):  
H. Q. Yang ◽  
Z. J. Chen ◽  
Jonathan G. Dudley
Keyword(s):  
Degrees Of Freedom ◽  
Unstructured Grids ◽  
Correction Method ◽  
Higher Order ◽  
High Order ◽  
Order Correction ◽  
High Order Accuracy ◽  
Order Accuracy ◽  
High Order Scheme ◽  
Upwind Schemes

There has been a growing interest in higher-order spatial discretization methods due to their potential for delivering high accuracy at reasonable computational overhead for the Direct Numerical Simulation (DNS) of vortex-dominated flows. Many of the existing high-order schemes for unstructured grids use more degrees-of-freedom (DOF) in each cell to achieve high-order accuracy. This paper formulates and demonstrates a high-order correction method for unstructured grids. Using this approach, there is no increase in DOF within each cell. By adding higher order correction terms, higher order accuracy can be achieved. The present technique is innovative in that it can be readily added to existing lower order solvers, it can achieve very high-order accuracy, it is stable, and it can make use of either central or upwind schemes. Many examples are presented and used to demonstrate the high-order accuracy.

A high order reduction–correction method for Hopf bifurcation in fluids and for viscoelastic vibration

2015 ◽  
Vol 57 (2) ◽  
pp. 305-324 ◽  
Author(s):  
J. M. Cadou ◽  
F. Boumediene ◽  
Y. Guevel ◽  
G. Girault ◽  
L. Duigou ◽  
...  
Keyword(s):  
Hopf Bifurcation ◽  
Order Reduction ◽  
Correction Method ◽  
High Order

Synthesis of multiwalled carbon nanotube-based infrared radiation detector

2012 ◽  
Vol 187 ◽  
pp. 73-78 ◽  
Author(s):  
Rahat Afrin ◽  
Jibran Khaliq ◽  
Mohammad Islam ◽  
Iftikhar Hussain Gul ◽  
Arshad Saleem Bhatti ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Infrared Radiation ◽  
Radiation Detector ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon
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