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Array for acoustic tomography of the atmosphere

机译:阵列为大气层的声学层析成像

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Tomography has been widely used in many fields of science, medicine and technology for remote sensing of different media. Acoustic tomography of the atmosphere allows one to reconstruct the three-dimensional temperature and velocity fields and to monitor their evolution in time. It was first employed in the 1990's. In this paper, we overview arrays for acoustic tomography of the atmosphere which have been employed so far. Furthermore, we describe an acoustic tomography array which is proposed to be built at the NOAA Environmental Technology Laboratory. The array will allow us to remotely measure the temperature and velocity fields in a volume with the size of about 40 m×40 m × 6 m, located at several meters above the ground. No currently existing meteorological instrumentation allows one to do such measurements. The temperature and velocity fields which will be reconstructed with the use of this array are important for many applications: boundary layer meteorology; propagation of acoustic and electromagnetic waves in the atmosphere; experimental verification of Large Eddy Simulation and Direct Numerical Simulation; etc.
机译:断层扫描已被广泛应用于许多科学,医学和技术领域,用于遥感不同媒体。气氛的声学层析术允许一个人重建三维温度和速度场,并及时监测它们的演变。它是在1990年代雇用的。在本文中,我们概述了到目前为止采用的大气层的声学层析成像。此外,我们描述了一种声学断层扫描阵,建议在Noaa环境技术实验室建造。阵列将允许我们远程测量体积中的温度和速度场,其尺寸为约40米×40m×6米,位于地面上方的几米处。目前,现有的气象仪器允许人们进行这种测量。将使用该阵列重建的温度和速度字段对于许多应用来说都很重要:边界层气象;声学和电磁波在大气中的传播;大型涡仿真和直接数值模拟的实验验证;等等。

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