A water content continuous monitoring of grapevine xylem tissue using a portable low-power cost-effective FMCW radar
| Autor: | Cebrian Garcia Gonzalez, Inigo Ederra, I. Maestrojuan, Luis G. Santesteban, Diana Marín, Ramon Gonzalo, Carlos Quemada Mayoral, Juan Carlos Iriarte Galarregui, Carlos Henrique Miranda, Diego Gaston |
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| Přispěvatelé: | Universidad Pública de Navarra. Departamento de Agronomía, Biotecnología y Alimentación, Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación, Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. ISC - Institute of Smart Cities, Nafarroako Unibertsitate Publikoa. Agronomia, Bioteknologia eta Elikadura Saila, Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko, Elektroniko eta Telekomunikazio Saila, Gobierno de Navarra / Nafarroako Gobernua, PI025 VITHZ, Gobierno de Navarra / Nafarroako Gobernua, 0011-1365-2016-000084 RAFF |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Bandwidth (signal processing)
Continuous monitoring 0211 other engineering and technologies 02 engineering and technology Temperature measurement law.invention Pipeline transport Continuous-wave radar Frequency-modulated continuous-wave (FMCW) radar Xylem water content law Dielectric permittivity Evapotranspiration Multiple signal classification (MUSIC) algorithm General Earth and Planetary Sciences Environmental science Electrical and Electronic Engineering Radar Water content 021101 geological & geomatics engineering Remote sensing Sensor |
| Zdroj: | Academica-e. Repositorio Institucional de la Universidad Pública de Navarra instname Academica-e: Repositorio Institucional de la Universidad Pública de Navarra Universidad Pública de Navarra |
| Popis: | This paper presents the real-time monitoring of a grapevine’s water content that flows up through the xylem tissue by means of a frequency-modulated continuous-wave (FMCW) radar. The application of an optimization process, based on the super-resolution multiple signal classification (MUSIC) algorithm, has enabled the reduction of the bandwidth required to discern the xylem water content, and thus the operating frequency, achieving a depth resolution of at least 3 mm. This design advantage has resulted in a significant step forward towards a real life application, allowing the use of fully-integrated off-the-shelf components in order to implement a completely portable low-power cost-effective radar at 23.1 GHz with a 3.4 GHz bandwidth. The sensor performance has been evaluated by means of three different experiments: irrigation cycles, day/night cycles and comparison between irrigation cycles at different temperatures. From the experimental results, it is possible to assert that the contactless sensor presented in this work is very sensitive to changes in the plant’s water content, differentiating between daytime and nighttime. In addition, it has been proved that temperature has a noticeable influence over the evapotranspiration, observing negative drying slopes of 5.62 mV/cycle and 6.28 mV/cycle at 23ºC and 26ºC respectively. This work was supported in part by the Spanish Ministry of Economy and Competitiveness under Project TEC2016-76997-C3-1-R and in part by the Navarra Government under Project PI025 VITHZ and Project 0011-1365-2016-000084 RAFF. |
| Databáze: | OpenAIRE |
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