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已同步 2025-08-06 20:46:52 +08:00
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User libraries is a sub-package where useful Python modules contributed by users are stored.
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******************
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GPR antenna models
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******************
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Information
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===========
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**Author/Contact**: Craig Warren (Craig.Warren@ed.ac.uk), University of Edinburgh
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**License**: Creative Commons Attribution-ShareAlike 4.0 International License (http://creativecommons.org/licenses/by-sa/4.0/)
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**Attribution/cite**: Warren, C., Giannopoulos, A. (2011). Creating finite-difference time-domain models of commercial ground-penetrating radar antennas using Taguchi's optimization method. *Geophysics*, 76(2), G37-G47. (http://dx.doi.org/10.1190/1.3548506)
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The module currently features models of antennas similar to commercial GPR antennas:
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* Geophysical Survey Systems, Inc. (GSSI) 1.5 GHz (Model 5100) antenna (http://www.geophysical.com). The dimensions of the GSSI 1.5GHz antenna model are: 170x108x45mm.
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* MALA Geoscience 1.2 GHz antenna (http://www.malags.com/). The dimensions of the MALA 1.2GHz antenna model are: 184x109x46mm.
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A description of how the models were created can be found at http://dx.doi.org/10.1190/1.3548506.
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Module overview
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===============
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* ``antennas.py`` is a module containing the descriptions of the antennas.
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How to use the module
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=====================
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The antenna models can be accessed from within a block of Python code in an input file. The models must be used with cubic spatial resolutions of either 1mm (default) or 2mm.
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Example
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-------
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To include an antenna model similar to a GSSI 1.5 GHz antenna at a location 0.125m, 0.094m, 0.100m (x,y,z):
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.. code-block:: none
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#python:
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from user_libs.antennas import antenna_like_GSSI_1500
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antenna_like_GSSI_1500(0.125, 0.094, 0.100)
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#end_python:
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.. figure:: images/antenna_like_GSSI_1500.png
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:width: 600 px
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FDTD geometry mesh showing an antenna model similar to a GSSI 1.5 GHz antenna (skid removed for illustrative purposes).
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.. figure:: images/antenna_like_MALA_1200.png
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:width: 600 px
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FDTD geometry mesh showing an antenna model similar to a MALA 1.2GHz antenna (skid removed for illustrative purposes).
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