Contribution of GNSS in precision agriculture

Kahveci, Muzaffer

doi:10.1109/rast.2017.8002939

Cited by 3 publications

(2 citation statements)

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“…Los Sistemas de Información Geográfica (GIS), es una de las herramientas que proporciona recursos de información geográficos que sirven como apoyo al sector agrícola para el trabajo en las tierras (Longley & Frank Goodchild, 2020). Además, Kahveci (2017) afirma que, el uso de las TIC, la teledetección, GIS y GNSS en la agricultura va en aumento gradual en los países desarrollados.…”

Section: Introductionunclassified

Aplicación del GIS en la caracterización edafoclimática, del distrito de Cacatachi – provincia de San Martín, con fines de producción agrícola rentable y sostenible

2021

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La caracterización edafoclimática de los suelos es un proceso que contribuye a la planificación de las siembras con mejores perspectivas rentables, siendo el punto de partida de la actividad productiva agropecuaria. El objetivo fue generar una base de datos geoespaciales integrada de condiciones edafoclimáticas del distrito de Cacatachi, de consulta dinámica a través de mapas temáticos como de fisiografía, capacidad de uso, características físicas y químicas de suelos y de uso actual de las tierras. Para ello se empleó un software GIS utilizando información de instituciones públicas que iniciaron el proceso; asimismo, la metodología de trabajo tuvo dos etapas, a nivel de gabinete y a nivel de campo. El resultado fue la base de datos Quantum GIS (QGIS), que facilita el manejo de la información edafoclimática, con 104 mapas en detalle, cuyas representaciones espaciales exponen la caracterización de las zonas estratificadas en el proyecto, donde se hicieron las calicatas, de los cuales se hicieron los análisis químicos, físicos y biológicos de los horizontes identificados en los perfiles. La información edafoclimática generada nos aproxima a una microzonificación en detalle, que se convierte en herramienta orientadora de las siembras de cultivos, en función a las potencialidades nutricionales, fisiográficas y climáticas de los suelos, segmentados en sectores productivos.

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Section: Introductionunclassified

Aplicación del GIS en la caracterización edafoclimática, del distrito de Cacatachi – provincia de San Martín, con fines de producción agrícola rentable y sostenible

2021

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“…The use of global navigation satellite systems (GNSSs) is essential in a variety of fields that require precise location and time information, including aviation (e.g., Sabatini et al [1]), transportation (e.g, Kubo et al. [2]), search and rescue services (e.g, Molina et al [3]), agriculture (e.g., Kahveci et al [4]), and maritime operations (e.g., Ostolaza et al [5]). Additionally, remote sensing of atmospheric constituents with the exploitation of GNSS signals is nowadays a well-established and widely applied approach, which is referred to as GNSS meteorology [6].…”

Section: Introductionmentioning

confidence: 99%

Assessing the Impact of GNSS ZTD Data Assimilation into the WRF Modeling System during High-Impact Rainfall Events over Greece

et al. 2020

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The derivation of global navigation satellite systems (GNSSs) tropospheric products is nowadays a state-of-the-art technique that serves both research and operational needs in a broad range of applications in meteorology. In particular, GNSS zenith tropospheric delay (ZTD) data assimilation is widely applied in Europe to enhance numerical weather predictions (NWPs). The current study presents the first attempt at introducing assimilation of ZTDs, derived from more than 48 stations of the Hellenic GNSS network, into the operational NWP system of the National Observatory of Athens (NOA) in Greece, which is based on the mesoscale Weather Research and Forecasting (WRF) model. WRF was applied during seven high-impact precipitation events covering the dry and wet season of 2018. The simulation employing the ZTD data assimilation reproduces more accurately, compared to the control experiment, the observed heavy rainfall (especially for high precipitation events, exceeding 20 mm in 24h) during both dry and wet periods. Assimilating ZTDs also improves the simulation of intense (>20 mm) convective precipitation during the time window of its occurrence in the dry season, and provides a beneficial influence during synoptic-scale events in the wet period. The above results, which are statistically significant, highlight an important positive impact of ZTD assimilation on the model's precipitation forecast skill over Greece. Overall, the modelling system's configuration, including the assimilation of ZTD observations, satisfactorily captures the spatial and temporal distribution of the observed rainfall and can therefore be used as the basis for examining further improvements in the future. meteorological applications, including nowcasting and numerical weather prediction (NWP) [8][9][10][11], as well as weather monitoring, including extreme events [12][13][14]. Special meteorological interest derives from the near-real time (NRT) ZTDs, which are estimated based on raw GNSS observations. The ZTD is a standard GNSS product expressing the total signal delay in the zenith direction above a receiver [6,15]. This vertical lag contains information on the total columnar amount of water vapor [16].In Europe, collaborative scientific efforts over the past two decades substantially contributed to the development of networks and analysis centers collecting and processing, respectively, GNSS data to compute tropospheric delays. The establishment of the European GNSS water vapor program (E-GVAP; [17]) in 2005 allowed for the operational distribution of NRT ZTD estimates to the meteorological community [6]. This service encouraged the implementation of precipitation forecast impact studies involving the assimilation of NRT ZTD observations into NWP models. Poli et al. [18] found an improvement in the prediction of precipitation patterns over France during spring and summer when assimilating ZTD data into a global four-dimensional variational (4D-var) assimilation and forecasting system. Positive impacts of ZTD data assimilation on precipita...

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On the application of radio planning tools in open environments for the improvement of autoguidance systems used in precision agriculture

Sevilla

Gutiérrez

Gómez

et al. 2021

Computers and Electronics in Agriculture

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Contribution of GNSS in precision agriculture

Cited by 3 publications

References 0 publications

Aplicación del GIS en la caracterización edafoclimática, del distrito de Cacatachi – provincia de San Martín, con fines de producción agrícola rentable y sostenible

Aplicación del GIS en la caracterización edafoclimática, del distrito de Cacatachi – provincia de San Martín, con fines de producción agrícola rentable y sostenible

Assessing the Impact of GNSS ZTD Data Assimilation into the WRF Modeling System during High-Impact Rainfall Events over Greece

On the application of radio planning tools in open environments for the improvement of autoguidance systems used in precision agriculture

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