Eye-Safe Lidar System for Pesticide Spray Drift Measurement

Spray drift is one of the main sources of pesticide contamination. For this reason, an accurate understanding of this phenomenon is necessary in order to limit its effects. Nowadays, spray drift is usually studied by using in situ collectors which only allow time-integrated sampling of specific poin...

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Main Authors:	Gregorio, Eduard, Rocadenbosch, Francesc, Sanz, Ricardo, Rosell-Polo, Joan R.
Format:	Online
Language:	English
Published:	MDPI 2015
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4367378/

id	pubmed-4367378
recordtype	oai_dc
spelling	pubmed-43673782015-04-30 Eye-Safe Lidar System for Pesticide Spray Drift Measurement Gregorio, Eduard Rocadenbosch, Francesc Sanz, Ricardo Rosell-Polo, Joan R. Article Spray drift is one of the main sources of pesticide contamination. For this reason, an accurate understanding of this phenomenon is necessary in order to limit its effects. Nowadays, spray drift is usually studied by using in situ collectors which only allow time-integrated sampling of specific points of the pesticide clouds. Previous research has demonstrated that the light detection and ranging (lidar) technique can be an alternative for spray drift monitoring. This technique enables remote measurement of pesticide clouds with high temporal and distance resolution. Despite these advantages, the fact that no lidar instrument suitable for such an application is presently available has appreciably limited its practical use. This work presents the first eye-safe lidar system specifically designed for the monitoring of pesticide clouds. Parameter design of this system is carried out via signal-to-noise ratio simulations. The instrument is based on a 3-mJ pulse-energy erbium-doped glass laser, an 80-mm diameter telescope, an APD optoelectronic receiver and optomechanically adjustable components. In first test measurements, the lidar system has been able to measure a topographic target located over 2 km away. The instrument has also been used in spray drift studies, demonstrating its capability to monitor the temporal and distance evolution of several pesticide clouds emitted by air-assisted sprayers at distances between 50 and 100 m. MDPI 2015-02-04 /pmc/articles/PMC4367378/ /pubmed/25658395 http://dx.doi.org/10.3390/s150203650 Text en © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Gregorio, Eduard Rocadenbosch, Francesc Sanz, Ricardo Rosell-Polo, Joan R.
spellingShingle	Gregorio, Eduard Rocadenbosch, Francesc Sanz, Ricardo Rosell-Polo, Joan R. Eye-Safe Lidar System for Pesticide Spray Drift Measurement
author_facet	Gregorio, Eduard Rocadenbosch, Francesc Sanz, Ricardo Rosell-Polo, Joan R.
author_sort	Gregorio, Eduard
title	Eye-Safe Lidar System for Pesticide Spray Drift Measurement
title_short	Eye-Safe Lidar System for Pesticide Spray Drift Measurement
title_full	Eye-Safe Lidar System for Pesticide Spray Drift Measurement
title_fullStr	Eye-Safe Lidar System for Pesticide Spray Drift Measurement
title_full_unstemmed	Eye-Safe Lidar System for Pesticide Spray Drift Measurement
title_sort	eye-safe lidar system for pesticide spray drift measurement
description	Spray drift is one of the main sources of pesticide contamination. For this reason, an accurate understanding of this phenomenon is necessary in order to limit its effects. Nowadays, spray drift is usually studied by using in situ collectors which only allow time-integrated sampling of specific points of the pesticide clouds. Previous research has demonstrated that the light detection and ranging (lidar) technique can be an alternative for spray drift monitoring. This technique enables remote measurement of pesticide clouds with high temporal and distance resolution. Despite these advantages, the fact that no lidar instrument suitable for such an application is presently available has appreciably limited its practical use. This work presents the first eye-safe lidar system specifically designed for the monitoring of pesticide clouds. Parameter design of this system is carried out via signal-to-noise ratio simulations. The instrument is based on a 3-mJ pulse-energy erbium-doped glass laser, an 80-mm diameter telescope, an APD optoelectronic receiver and optomechanically adjustable components. In first test measurements, the lidar system has been able to measure a topographic target located over 2 km away. The instrument has also been used in spray drift studies, demonstrating its capability to monitor the temporal and distance evolution of several pesticide clouds emitted by air-assisted sprayers at distances between 50 and 100 m.
publisher	MDPI
publishDate	2015
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4367378/
_version_	1613201444732665856

Eye-Safe Lidar System for Pesticide Spray Drift Measurement

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