Article ID Journal Published Year Pages File Type
302471 Renewable Energy 2009 7 Pages PDF
Abstract

This paper presents a new algorithm for calculating azimuth and altitude of the Sun from its ecliptic coordinates. The equations of the new procedure are not based on spherical trigonometry, like the procedure currently used for computing the solar vector, but on analytic geometry enriched by matrix algebra. Our proposal allows the horizontal coordinates of the Sun to be determined with a significantly higher computational efficiency than the classic algorithm without any loss in accuracy.

Related Topics
Physical Sciences and Engineering Energy Renewable Energy, Sustainability and the Environment
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