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Optical Back Scattering of Water Droplets (Clouds) and Solid Silica Particles (Volcanic Ash) for Application to Airborne and Unmanned Aerial Vehicles

机译：应用于飞机和无人机的水滴（云）和固体二氧化硅颗粒（火山灰）的光学反向散射

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摘要

Cloud and ash particulate information in the air is currently can be obtained by positioning a satellite to a location; however, it produces limited data, and is cost prohibitive. This work addresses the need for low cost, and low weight and power requirements of airborne-type instrumentation for small UAV payloads. A sensor installed on an airborne platform such as a glider, has a tremendous advantage especially if the ability exists to guide the glider to multiple points of interest that are too dangerous for manned aircraft. Such a device will provide substantial contribution to the basic science of clouds and volcanic eruptions (prediction, monitoring, environmental impact, basic volcano processes) as well as for aviation ash hazard mitigation. In-situ ash and water concentrations can be used for direct comparison with simultaneous orbital and ground-based multi-spectral image and spectrometer data.;In this work, a new detection and measurement system based on optical backscattering of water droplets (clouds) and silica particles (volcanic ash ) dispersed and suspended in air is demonstrated. Additionally, this work also provides conceptual verification of the laboratory tests in state of the art wind tunnel testing. From the polarization ratio and backscatter signal, the mean particle size and their number density as well as type of particle can be evaluated. Measurements on water particle density and size are reported as well as ash particles.;In order to get good and correlated data we teamed with NASA JPL through the SBIR (Small Business Innovative Research) program with IDI (Innovative Dynamics Inc, Ithaca NY). Testing was also done at IRT (Icing Research Tunnel) in Cleveland and EPA (Environmental Protection Agency) in Raleigh, NC.
机译：当前，可以通过将卫星定位到某个位置来获取空气中的云和灰分微粒信息。但是，它产生的数据有限，并且成本高昂。这项工作满足了对小型无人机有效载荷的机载型仪器的低成本，低重量和低功耗的需求。安装在机载平台（例如滑翔机）上的传感器具有巨大的优势，特别是如果存在将滑翔机引导到对有人驾驶飞机来说太危险的多个兴趣点的能力的话。这种设备将为云层和火山喷发的基础科学（预测，监测，环境影响，基本的火山爆发过程）以及减轻航空灰烬危害做出重大贡献。可以使用原位灰分和水的浓度与同时存在的基于轨道和地面的多光谱图像和光谱仪数据进行直接比较；在这项工作中，一种基于水滴（云）和光的反向散射的新型检测和测量系统演示了分散并悬浮在空气中的二氧化硅颗粒（火山灰）。此外，这项工作还提供了最新风洞测试中实验室测试的概念验证。根据极化率和反向散射信号，可以评估平均粒径及其数量密度以及粒子类型。报告了水颗粒密度和大小以及灰分的测量值。为了获得良好且相关的数据，我们通过IDI的SBIR（小型企业创新研究）计划与NASA JPL合作（纽约州伊萨卡市创新动力公司）。在克利夫兰的IRT（结冰研究隧道）和北卡罗来纳州罗利的EPA（环境保护局）也进行了测试。

著录项

  • 作者

    Dixit, Rahul.;

  • 作者单位

    State University of New York at Binghamton.;

  • 授予单位 State University of New York at Binghamton.;
  • 学科 Electrical engineering.
  • 学位 Ph.D.
  • 年度 2017
  • 页码 134 p.
  • 总页数 134
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 水产、渔业;
  • 关键词

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