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A Comparison of Spatial Interpolation Methods for Estimation of Average Electromagnetic Field Magnitude

By Marco A. Azpurua and K. Dos Ramos
Progress In Electromagnetics Research M, Vol. 14, 135-145, 2010


Several georeferenced measurements of electric field were done in a pilot area of Caracas, Venezuela, to verify that the magnitude of radio frequency electromagnetic fields is below the human exposure limits, recommended by the International Commission on Non-Ionizing Radiation Protection. The collected data were analyzed using geographical information systems, with the objective of using interpolation techniques to estimate the average electromagnetic field magnitude, to obtain a continuous dataset that could be represented over a map of the entire pilot area. This paper reviews the three methods of interpolation used: SPLINE, Inverse Distance Weighting (IDW) and KRIGING. A statistical assessment of the resultant continuous surfaces indicates that there is substantial difference between the estimating ability of the three interpolation methods and IDW performing better overall.


Marco A. Azpurua and K. Dos Ramos, "A Comparison of Spatial Interpolation Methods for Estimation of Average Electromagnetic Field Magnitude," Progress In Electromagnetics Research M, Vol. 14, 135-145, 2010.


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