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Open AccessArticle

Path Loss Determination Using Linear and Cubic Regression Inside a Classic Tomato Greenhouse

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Department of Computer Architecture and Technology, University of Granada, 18071 Granada, Spain
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Software Engineering Department, University of Granada, 18071 Granada, Spain
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Department of Computer Sciences and Electronic, Universidad de la Costa, Barranquilla 080002, Atlantico, Colombia
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(10), 1744; https://doi.org/10.3390/ijerph16101744
Received: 21 March 2019 / Revised: 12 May 2019 / Accepted: 14 May 2019 / Published: 17 May 2019
(This article belongs to the Special Issue Greenhouse and Horticulture)
The production of tomatoes in greenhouses, in addition to its relevance in nutrition and health, is an activity of the agroindustry with high economic importance in Spain, the first exporter in Europe of this vegetable. The technological updating with precision agriculture, implemented in order to ensure adequate production, leads to a deployment planning of wireless sensors with limited coverage by the attenuation of radio waves in the presence of vegetation. The well-known propagation models FSPL (Free-Space Path Loss), two-ray, COST235, Weissberger, ITU-R (International Telecommunications Union—Radiocommunication Sector), FITU-R (Fitted ITU-R), offer values with an error percentage higher than 30% in the 2.4 GHz band in relation to those measured in field tests. As a substantial improvement, we have developed optimized propagation models, with an error estimate of less than 9% in the worst-case scenario for the later benefit of farmers, consumers and the economic chain in the production of tomatoes. View Full-Text
Keywords: propagation model; wireless propagation model; precision agriculture; COST235; ITU-R; FITU-R; Weisbberger model propagation model; wireless propagation model; precision agriculture; COST235; ITU-R; FITU-R; Weisbberger model
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Cama-Pinto, D.; Damas, M.; Holgado-Terriza, J.A.; Gómez-Mula, F.; Cama-Pinto, A. Path Loss Determination Using Linear and Cubic Regression Inside a Classic Tomato Greenhouse. Int. J. Environ. Res. Public Health 2019, 16, 1744.

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