Path Loss Determination Using Linear and Cubic Regression Inside a Classic Tomato Greenhouse Cama Pinto, Dora Damas Hermoso, Miguel Holgado Terriza, Juan Antonio Gómez Mula, Francisco Cama Pinto, Alejandro Propagation model Wireless propagation model Precision agriculture Weisbberger model COST235 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. 2019-10-24T10:32:11Z 2019-10-24T10:32:11Z 2019-05-17 info:eu-repo/semantics/article Cama-Pinto, D., Damas, M., Holgado-Terriza, J. A., Gómez-Mula, F., & Cama-Pinto, A. (2019). Path Loss Determination Using Linear and Cubic Regression Inside a Classic Tomato Greenhouse. International journal of environmental research and public health, 16(10), 1744. http://hdl.handle.net/10481/57494 10.3390/ijerph16101744 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España MDPI