Naval Surface Warfare Center, Panama City, FL 32407, USA.
J Acoust Soc Am. 2011 Aug;130(2):669-72. doi: 10.1121/1.3613806.
Backscattering of sound by a solid aluminum cylinder was measured in the free field and with the cylinder near a flat surface. The target was suspended just below the surface of a water tank to simulate some aspects of backscattering when resting on the seabed. Measurements were compared with predictions made by an approximate hybrid approach based on multiple two-dimensional finite element calculations and the use of images. Many of the spectral features present in the tank data were present in the model. Comparing numerical model predictions with experimental data serves to build credibility for the modeling approach and can assist in developing insight into the underlying physical processes.
固体铝圆柱体的背向散射声音在自由场和圆柱体靠近平面的情况下进行了测量。目标物被悬挂在水箱底部附近，以模拟在海底上休息时的背向散射的某些方面。测量结果与基于多个二维有限元计算和使用图像的近似混合方法的预测进行了比较。水箱数据中存在的许多谱特征也存在于模型中。将数值模型预测与实验数据进行比较有助于建立模型方法的可信度，并有助于深入了解潜在的物理过程。
