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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/hess-2019-560
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-2019-560
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 18 Nov 2019

Submitted as: research article | 18 Nov 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Hydrology and Earth System Sciences (HESS).

Multi-constellation GNSS interferometric reflectometry with mass-market sensors as a solution for soil moisture monitoring

Angel Martín1, Sara Ibáñez2, Carlos Baixauli3, Sara Blanc4, and Ana B. Anquela1 Angel Martín et al.
  • 1Department of Cartographic Engineering, Geodesy and Photogrammetry, Universitat Politècnica de Valencia, Valencia, 46022, Spain
  • 2Centro Valenciano de Estudios sobre el Riego, Universitat Politècnica de Valencia, Valencia, 46022, Spain
  • 3Cento de Experiencias Cajamar, Paiporta, Valencia, 46200, Spain
  • 4Institute of Information and Communication Technologiesboratory Universitat Politècnica de Valencia, Valencia, 46022 Spain

Abstract. Per capita arable land is decreasing due to rapidly increasing population, and fresh water is becoming scarce and more expensive. Therefore, farmers should continue to use technology and innovative solutions to improve efficiency, save input costs, and optimise environmental resources (such as water). In the case study presented in this manuscript, the GNSS-IR technique was used to monitor soil moisture during 66 days, from December 3, 2018, to February 6, 2019, in the installations of the Cajamar Centre of Experiences, Paiporta, Valencia, Spain. Two main objectives were pursued. The first was the extension of the technique to a multi-constellation solution using GPS, GLONASS, and GALILEO satellites, and the second was to test whether mass-market sensors could be used for this technique. Both objectives were achieved. At the same time the GNSS observations were made, soil samples taken at 5 cm depth were used for soil moisture determination to establish a reference dataset. Based on a comparison with that reference data set, all GNSS solutions, including the three constellations and the two sensors (geodetic and mass-market), were highly correlated, with a correlation coefficients between 70 % and 85 %.

Angel Martín et al.
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Angel Martín et al.
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Short summary
In the case study presented in this manuscript, the GNSS-IR technique was used to monitor soil moisture during 66 days, from December 3, 2018, to February 6, 2019, in the installations of the Cajamar Centre of Experiences, Paiporta, Valencia, Spain. Two main objectives were pursued. The first was the extension of the technique to a multi-constellation solution using GPS, GLONASS, and GALILEO satellites, and the second was to test whether mass-market sensors could be used for this technique.
In the case study presented in this manuscript, the GNSS-IR technique was used to monitor soil...
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