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Acoustic and seismic field of movable sources of the noise and vibration

Yu. M. Zaslavsky, V. Yu. Zaslavsky, A. M. Sokov

Memoirs of the Faculty of Physics 2017. N 5.

  • Article
Annotation

Experimental investigations of natural noise and seismic oscillations induced by motor car quick moving along highway are carried out. The outer acoustic noise and antropogenic seismic signals are recorded by lengthwise microphone array and geophone cable. Fan patterns shown current direction of the movable object are plotted on the basis of electronic scanning of acoustic antenna directivity pattern central lobe. Thin spectral analysis and Doppler frequency shift measurement of discrete component of outer noise spectrum are used for the velocity control. Field pattern is plotted by results of recording on the geophone cable. Prognosis of the object motion direction and velocity is provided due to the wave hodograph lines formed on this field. Wave hodographs are used for checking the data of acoustic record and receiving of informative signs essential for classification also.

Received: 2017 July 10
Approved: 2017 October 17
PACS:
43.50.+y Noise: its effects and control
Authors
Yu. M. Zaslavsky, V. Yu. Zaslavsky, A. M. Sokov
$^1$Federal research center Institute of Applied Physics
Issue 5, 2017

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