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SOURCE:    Almanac of Modern Science and Education. Tambov: Gramota, 2014. № 9. P. 127-131.
SCIENTIFIC AREA:    Physical-Mathematical Sciences
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SYROMYASOV Aleksei Olegovich
Ogarev Mordovia State University

Abstract. The dependence of light intensity on chosen direction appears a periodic function of two variables. For the approximate determination of the analytical form of this dependence on the basis of experimental data the author proposes to use discrete Fourier transform with two variables. This method doesn’t require large computing costs and is very fast. Its efficiency is tested while calculating the spatial light distribution of a particular light source.
Key words and phrases: сила света, тригонометрическая аппроксимация, интерполяция, дискретное преобразование Фурье, фотометрические данные, light intensity, trigonometric approximation, interpolation, discrete Fourier transform, photometric data
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