التفاصيل البيبلوغرافية
| العنوان: |
High-Directional Sound Propagation Over the Earth's Surface. |
| المؤلفون: |
RAKOV, Denis S.1,2 rds@tpu.ru, RAKOV, Aleksandr S.1,2, CHURSIN, Yury A.3, PAVLICHEV, Vsevolod V.3, IGUMNOV, Artyom O.3 |
| المصدر: |
Archives of Acoustics. 2020, Vol. 45 Issue 4, p747-752. 6p. |
| مصطلحات موضوعية: |
*SURFACE of the earth, *ACOUSTIC wave propagation, *SOUND pressure, *ANTENNA arrays, *ANTENNA radiation patterns |
| مستخلص: |
The article discusses the issues of accounting the direction pattern of parametric antenna array the propagation of sound over the Earth's surface. As a radiator, a parametric antenna array is used. A description is given of measuring equipment and experimental research methods. The Delaney-Bezley model was used as a model of the Earth's surface impedance. The research results showed the importance of accounting the direction pattern of parametric antenna array in predicting the sound pressure level of a propagating acoustic signal over the Earth's surface. On the example of a difference signal with a frequency of 2 kHz, the calculation of the sound pressure level on a 100-meter path with the influence of the Earth's surface is shown. The results obtained showed a good agreement between the theoretical calculation and experimental data. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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