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자료유형
학술저널
저자정보
김경범 (국방과학연구소)
저널정보
한국환경기술학회 한국환경기술학회지 한국환경기술학회지 제22권 제2호
발행연도
2021.1
수록면
108 - 115 (8page)

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In this paper, the procedure is proposed to identify the firing noise from artillery only with the noise level measured by an automatic noise measuring system and the effects of distance, ground condition, wind, season on the propagation of the firing noise were analyzed. was measured for 24 months at 6 sites installed 260 m to 7.2 km away from the source. Using the impulsiveness of firing noise, it is possible to identify the firing noise by cross-correlation between the noise level at the site where the firing noise is to be identified and the noise level at the site where it is sufficiently close to the noise source so that firing or non-firing noise can be determined with noise level. As the distance increases, the distribution of noise level became more complex and the deviation increased significantly. Considering noise reduction due to an increase in distance, the noise level at the receiver sites containing the path over sea surface was relatively higher than over land. The effect of wind on the noise level was confirmed at one site, but in general the increase or decrease in noise level with wind could not be determined. Although the detailed manner in which the noise level is affected by the season could not be established, a seasonal variation was observed at each site. There was no difference in noise level by morning and afternoon hours.

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