汽车、火车等运载工具噪声是声污染中很重要的一部分。这类噪声因声源多、频带宽、运动发声等特性与运动状态耦合而成为噪声测试控制的难题，其相关噪声测试研究亟待开展。为此，本项目拟以轿车噪声为研究对象展开以下研究：1）研究多源运动声场的重构方法，分析声源等效性、等价条件及声场特征，建立声场指向性的动态波叠加重构模型； 2）研究随机阵列阵元的方向指数解析方法和多源声场的等价原则，建立基于最大方向指数的阵列指向性数学模型；3）研究基于声场及阵元特征的声阵列稳健超指向性的建模和解析方法，构建最大信噪比的声阵列超指向增益模型。项目预期将揭示多源运动声场的声传播规律、声场与阵元及阵列超指向的关系、随机阵列稳健超指向性机理，实现阵列超指向性的声学表达及其稳健性构成，构建声阵列稳健超指向性测试方法。研究成果将为运动噪声源识别、测量与治理提供科学依据。

The noise of cars, trains and other vehicles is a very important part of the sound pollution. This type of noise becomes the difficult problem in the field of noise test and control due to its sound characteristics are closely related to the state of motion, such as multi sound sources, frequency bandwidth, and movement. The related acoustic testing basic research is necessary to carry out. So, the project is intended to expand the following contents with car noise: 1)Investigating the reconstruction of multi-source movement sound field, analyzing sound source equivalence, equivalence conditions and characteristics of the sound field directivity to establish sound field directivity dynamic reconstruction model with wave superposition.2)Researching the random array element direction index analysis method and multi-source sound field equivalence principle, establishing mathematical model based on the max-directional orientation index.3) Researching the acoustic array robust super-directional modeling and analytical methods base on acoustic and the array element characteristics ,building the largest SNR acoustic array super-directional gain model. The project is expected to reveal the law of acoustic propagation on the multi-source moving sound field, the relationship between sound field ,the array element and array super-directivity, the mechanism of small-scale array robust super-directivity, achieving super-directional acoustic expression and robustness characteristics, establishing the random acoustic array robust super-directivity testing methods . Research results will provide a scientific basis to the moving sound source identification, measurement and management.