Zobrazeno 1 - 10
of 430
pro vyhledávání: '"G Farquharson"'
Publikováno v:
Радиофизика и электроника, Vol 25, Iss 1, Pp 38-49 (2020)
Subject and Purpose. The paper is concerned with Synthetic Aperture Radar (SAR) imaging and data processing and seeks to modify the conventional time-domain back projection algorithm (BPA) used for creating a SAR image. The modification consists in t
Externí odkaz:
https://doaj.org/article/60d9060bfb674f6da1664e8af1417da1
Autor:
Peter G. Lelièvre, Angela E. Carter-McAuslan, Michael W. Dunham, Drew J. Jones, Mariella Nalepa, Chelsea L. Squires, Cassandra J. Tycholiz, Marc A. Vallée, Colin G. Farquharson
Publikováno v:
SoftwareX, Vol 7, Iss , Pp 41-46 (2018)
The creation of 3D models is commonplace in many disciplines. Models are often built from a collection of tessellated surfaces. To apply numerical methods to such models it is often necessary to generate a mesh of space-filling elements that conforms
Externí odkaz:
https://doaj.org/article/9f53ddddab164948b8252ff2adfb0cb6
Publikováno v:
Canadian Journal of Earth Sciences. 59:489-503
Current “visual” integration approaches to map geology from geophysics are challenging, biased toward user assumptions, and time consuming. Applying a supervised machine learning Random Forest method to airborne geophysical data sets is an altern
Autor:
Souvik Mukherjee, Ronald S. Bell, William N. Barkhouse, Santi Adavani, Peter G. Lelièvre, Colin G. Farquharson
Publikováno v:
The Leading Edge. 41:462-471
The use of drones fo r geophysical data acquisition and artificial intelligence (AI) for geophysical data processing, imaging, and interpretation are active focus areas in current industry and academic applications. Unlocking their cumulative potenti
Autor:
Fan Luo, Guangming Fu, Colin G. Farquharson, Kun Zhang, Chong Zhang, Qingtian Lü, Jianyong Yan
Publikováno v:
Acta Geologica Sinica - English Edition. 96:791-805
Autor:
Xue Han, Changchun Yin, Yang Su, Bo Zhang, Yunhe Liu, Xiuyan Ren, Jianfu Ni, Colin G. Farquharson
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 60:1-13
Publikováno v:
GEOPHYSICS. 87:E13-E34
We have developed a 2D anisotropic magnetotelluric (MT) inversion algorithm that uses a limited-memory quasi-Newton (QN) method for bounds-constrained optimization. This algorithm solves the inverse problem, which is nonlinear, by iterative minimizat
Publikováno v:
Радиофизика и электроника, Vol 20, Iss 4, Pp 18-23 (2015)
Nearshore zones have a significant impact on life and economics. Along with the weather and climate stabilizing factor, caused by the water proximity, on the border of land and sea occur specific gradients and flows of heat, moist, pressure, etc. The
Externí odkaz:
https://doaj.org/article/a9b83707e5fc4cfe9d7fac7d891e8f8b
Publikováno v:
GEOPHYSICS. 86:B349-B367
Uranium exploration in the Athabasca Basin, Canada, relies heavily on ground-based transient electromagnetic (TEM) surveys to target thin, steeply dipping graphitic conductors that are often closely related to the uranium ore deposits. The interpreta
Publikováno v:
GEOPHYSICS. 86:E343-E354
The spectral-element (SE) method, which is based on the Galerkin technique, has been gradually implemented in geophysical electromagnetic (EM) 3D simulation. The accuracy and efficiency of this approach, implemented for deformed hexahedral and regula