CAJ | 학술논문

研究了浅海近距离声聚焦特性及其对目标辐射噪声测量的影响和修正方法.利用基于射线理论的虚源法,建立了典型声源和复合声源的声场计算模型,通过具体算例分析了声聚焦引起的测量误差,将单点测量模型和阵列多点测量模型进行对比,并进行湖上试验验证,结果表明阵列多点测量模型能有效的对信道空间传递函数平滑,为如何减小声聚焦对目标辐射噪声测量的影响提供了依据,有助于实际工程测量的数据分析和测量精度的提高.
연구료천해근거리성취초특성급기대목표복사조성측량적영향화수정방법.이용기우사선이론적허원법,건립료전형성원화복합성원적성장계산모형,통과구체산례분석료성취초인기적측량오차,장단점측량모형화진렬다점측량모형진행대비,병진행호상시험험증,결과표명진렬다점측량모형능유효적대신도공간전체함수평활,위여하감소성취초대목표복사조성측량적영향제공료의거,유조우실제공정측량적수거분석화측량정도적제고.
Study was conducted on the characteristics of shallow water acoustic focusing within measuring distance, its influence on the radiated noise measurement and the corresponding correction.Based on the image source method in Ray Theory, a calculating model for the acoustic field of typical sound sources and complex sound sources was established.Then, the measurement errors induced by acoustic focusing were analyzed.Comparing the spot measurement model with the multimetering model, through lake testing, the results showed that the array multimetering model can smooth the channel transfer function, it provides a foundation for reducing the influence of acoustic focusing on radiated noise measurement, and helps to analyse data and improve the accuracy of measurement.