Dynamic traffic noise maps based on noise monitoring and traffic speed data
Dynamic traffic noise maps based on noise monitoring and traffic speed data
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DOI：
10.1016/j.trd.2021.102796
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发表时间：
2021-03-21
影响因子：
7.6
通讯作者：
Cai, Ming
中科院分区：
文献类型：
--
作者：
Lan, Ziqin;Cai, Ming
与现有的动态交通噪声地图方法不同，本文提出了一种基于噪声监测和交通速度数据的大区域交通噪声地图动态更新方法。所提出的方法包括两个主要部分。首先，考虑到交通速度是影响交通噪声的因素之一，提出了噪声水平与交通速度的模型，利用实时噪声监测数据动态更新整个路网的噪声源强度。其次，为了避免冗余计算，预先计算声衰减项，并将其与更新的噪声源强度相结合，以生成新的噪声图。与其他两种方法相比，所提出的方法具有更高的精度与1.65-dB的总误差。
Unlike the current methods for dynamic traffic noise maps by using traffic flow as the nonacoustic road-related parameter to predict the noise emission of the whole road network, this study proposes a new method for dynamic updates of traffic noise maps in large regions based on noise monitoring and traffic speed data. The proposed method consists of two main parts. First, since the traffic speed is one of the factors affecting the traffic noise, a model of the noise level and traffic speed is proposed to update dynamically the noise source intensity of the whole road network with the real-time noise monitoring data. Second, to avoid redundant computations, the acoustic attenuation terms are calculated in advance and combined with the updated noise source intensity to generate new noise maps. Compared with two other methods, the proposed method has higher accuracy with a 1.65-dB overall error.