Error analysis and correction due to the phenomenon of acoustic focusing in shallow water radiated noise measurement
YANG Desen1;HU Pengtao1,2
1.National Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China;2. Navy 91388 Unit of PLA, Zhanjiang 524022, China
Abstract：Researches have been conducted on the characteristics of shallow water acoustic focusing within measuring distance, its influence on the radiated noise measurements and corresponding correction. Based on the image source method in Ray Theory, a calculating model for typical sound sources and complex sound sources of the acoustic field was established. Then deviations in measurements induced by acoustic focusing are analyzed. Through Comparing the spot measurement model with the multimetering model and lake testing, it shows that the array multimetering model can smoothly channel transfer function, which provides foundation for reducing the influence from acoustic focusing on radiated noise measurements and helps to analyse data and improve the accuracy of measurement.
杨德森;胡鹏涛;. 浅海目标辐射噪声测量中声聚焦现象引起的误差分析及修正[J]. , 2010, 29(1): 62-67.
YANG Desen;HU Pengtao;. Error analysis and correction due to the phenomenon of acoustic focusing in shallow water radiated noise measurement. , 2010, 29(1): 62-67.
2010, Vol. 29 
