Measurement of spray drift with a specifically designed lidar system

Gregorio López, Eduard; Torrent Martí, Xavier; Planas de Martí, Santiago; Solanelles Batlle, Francesc; Sanz Cortiella, Ricardo; Rocadenbosch Burillo, Francesc; Masip Vilalta, Joan; Rosell Polo, Joan Ramon; Ribes Dasi, Manuel

doi:https://doi.org/10.3390/s16040499

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2016

Author

Gregorio López, Eduard

Torrent Martí, Xavier

Planas de Martí, Santiago

Solanelles Batlle, Francesc

Sanz Cortiella, Ricardo

Rocadenbosch Burillo, Francesc

Masip Vilalta, Joan

Rosell Polo, Joan Ramon

Ribes Dasi, Manuel

Suggested citation

Gregorio López, Eduard; Torrent Martí, Xavier; Planas de Martí, Santiago; Solanelles Batlle, Francesc; Sanz Cortiella, Ricardo; Rocadenbosch Burillo, Francesc; ... Ribes Dasi, Manuel. (2016) . Measurement of spray drift with a specifically designed lidar system. Sensors, 2016, vol.16, núm. 499, s16040499. https://doi.org/10.3390/s16040499.

Abstract

Field measurements of spray drift are usually carried out by passive collectors and tracers. However, these methods are labour- and time-intensive and only provide point- and time-integrated measurements. Unlike these methods, the light detection and ranging (lidar) technique allows real-time measurements,

obtaining information with temporal and spatial resolution. Recently, the authors have developed the first eye-safe lidar system specifically designed for spray drift monitoring. This prototype is based on a 1534 nm erbium-doped glass laser and an 80 mm diameter telescope, has scanning capability, and is easily transportable. This paper presents the results of the first experimental campaign carried out with this instrument. High coefficients of determination (R2 > 0.85) were observed by comparing lidar measurements of the spray drift with those obtained by horizontal collectors. Furthermore, the lidar system allowed an assessment of the drift reduction potential (DRP) when comparing low-drift nozzles with standard ones, resulting in a DRP of 57% (preliminary result) for the tested nozzles. The lidar system was also used for monitoring the evolution of the spray flux over the canopy and to generate 2-D images of these plumes. The developed instrument is an advantageous alternative to passive collectors and opens the possibility of new methods for field measurement of spray drift.

URI

http://hdl.handle.net/10459.1/57899

DOI

https://doi.org/10.3390/s16040499

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Sensors, 2016, vol.16, núm. 499, s16040499

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Except where otherwise noted, this item's license is described as cc-by (c) Gregorio et al., 2016