What precision in the Digital Terrain Model is required for noise mapping?

被引：11

作者：

Arana, Miguel ^{[1
]}

San Martin, Ricardo ^{[1
]}

Nagore, Inaki ^{[1
]}

Perez, David ^{[1
]}

机构：

[1] Univ Publ Navarra, Dept Phys, Acoust Lab, Navarra, Spain

来源：

APPLIED ACOUSTICS | 2011年 / 72卷 / 08期

关键词：

DTM; Noise mapping; Accuracy;

D O I：

10.1016/j.apacoust.2010.06.010

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The Digital Terrain Model is the most basic and cumbersome element of any large-scale mapping projects. Accurate assessment of Digital Terrain Model data is an intricate but vital process. The impact of its accuracy on noise mapping has not been fully researched. The aim of this research on a specific case study is to analyse the differences in noise mapping results obtained from acoustic simulations carried out with different accuracies in Digital Terrain Model data. It seems that mapping with a 0.5 m degree of accuracy in elevation is sufficient for acoustic simulation, apart from the fact that it is easily achievable with current available techniques. In contrast, it can be concluded that mapping with 5 m accuracy in elevation is insufficient and may drastically change the evaluation of the percentage of people affected by noise. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：522 / 526

页数：5

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