Abstract
A model for sound propagation over uneven terrain, with mixed ground impedance and range-dependent meteorological conditions has been developed to improve prediction of the impact of aviation noise on communities. Based on the Parabolic Equation method, the model is intended to enhance the noise prediction capabilities for the Federal Aviation Administration's Aviation Environmental Design Tool in support of the Next Generation Air Transportation System (NextGen). The model ensures the low frequency content, a factor in community impact, is propagated accurately and can accommodate broadband, moving sound sources, traveling along user-specified paths, over three-dimensional terrain. Two test cases including uneven terrain, an impedance discontinuity, and a downward refracting atmosphere were designed to represent simple but realistic propagation conditions. Model results for a source traveling along a simple flight path under the conditions of the two test cases are presented and compared.
| Original language | English (US) |
|---|---|
| Title of host publication | 24th National Conference on Noise Control Engineering 2010, Noise-Con 10, Held Jointly with the 159th Meeting of the Acoustical Society of America |
| Pages | 1158-1165 |
| Number of pages | 8 |
| Volume | 2 |
| State | Published - 2010 |
| Event | 24th National Conference on Noise Control Engineering 2010, Noise-Con 2010, Held Jointly with the 159th Meeting of the Acoustical Society of America - Baltimore, MD, United States Duration: Apr 19 2010 → Apr 21 2010 |
Other
| Other | 24th National Conference on Noise Control Engineering 2010, Noise-Con 2010, Held Jointly with the 159th Meeting of the Acoustical Society of America |
|---|---|
| Country/Territory | United States |
| City | Baltimore, MD |
| Period | 4/19/10 → 4/21/10 |
All Science Journal Classification (ASJC) codes
- Acoustics and Ultrasonics