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Airborne spray drift measurement using passive collectors and lidar systems

机译：使用无源收集器和激光雷达系统进行机载喷雾漂移测量

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摘要

Minimization of the risk associated with spray applications requires a proper understanding of the spray drift phenomenon. This fact has led to the development of several techniques to measure the deposition on horizontal surfaces as well as the airborne spray profiles. Assessment of airborne spray drift is particularly difficult because this phenomenon is subject to variable micrometeorological conditions. However the monitoring of airborne drift has a great importance since it can be carried over long distances. This paper reviews main sampling techniques currently used to asses the airborne spray drift, based on passive collectors and tracers. Theoretical principles that determine the efficiency of passive samplers are studied as well as the performance of different types of tracers. On the other hand, this paper shows new airborne spray drift assessment techniques based on lidar technology, reviewing its principle of operation as well as its practical application in several spray drift trials. It is concluded that the lidar technique has significant advantages over conventional methods, especially in terms of time consumption and monitoring capabilities. However, the future adoption of lidar technology for airborne spray drift studies will be subjected to the development of lidar instruments really adapted to this application.
机译：为了最大程度地减少与喷涂相关的风险，需要对喷涂漂移现象有适当的了解。这一事实导致了数种技术的发展，这些技术可用于测量水平表面上的沉积物以及机载喷雾轮廓。空气传播的喷雾漂移的评估特别困难，因为这种现象会受到微气象条件的影响。但是，空中飘移的监视非常重要，因为它可以进行很长的距离。本文回顾了基于被动收集器和示踪剂的当前用于评估机载喷雾漂移的主要采样技术。研究了确定无源采样器效率的理论原理以及不同类型示踪剂的性能。另一方面，本文展示了基于激光雷达技术的新型机载喷雾漂移评估技术，并回顾了其工作原理以及在若干喷雾漂移试验中的实际应用。结论是，激光雷达技术相对于传统方法具有明显的优势，特别是在时间消耗和监视能力方面。但是，未来激光雷达技术在机载喷雾漂移研究中的应用将取决于真正适合该应用的激光雷达仪器的发展。

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