倾斜海底反射时声线水平偏转问题研究
发布时间：2018-09-09 20:03
【摘要】：三维浅海环境下,声线在倾斜海底反射时,会在水平方向上发生偏转。在远距离传播问题中,由于累积效应,接收声线的方位角与发射声线产生较大的偏差。若忽略不计,将会给声源定向等工作带来较大的误差。因此,研究声线在倾斜海底反射时的水平偏转问题,并总结其规律具有重要意义。采用射线声学的方法系统地研究了不同参数情况下倾斜海底声线水平偏转的问题,得到了在海底变化较缓时的近似公式,并进行了数值仿真分析。结果表明,声线的水平偏转的大小和方向由海底深度梯度和入射声线方位角与掠射角共同决定。
[Abstract]:In the three-dimensional shallow sea environment, the sound line deflects horizontally when the sound line is reflected from the inclined seabed. Due to the cumulative effect, the azimuth of the received sound line deviates greatly from the transmitting sound line in the problem of long distance propagation. If ignored, it will bring great error to the work of sound source orientation. Therefore, it is of great significance to study the horizontal deflection of the sound line when it is reflected from the inclined seabed. In this paper, the problem of horizontal deflection of inclined submarine sound line under different parameters is studied systematically by means of ray acoustics, and the approximate formula when the seabed changes slowly is obtained, and the numerical simulation analysis is carried out. The results show that the horizontal deflection of the sound line is determined by the depth gradient of the seabed, the azimuth of the incident sound line and the grazing angle.
【作者单位】： 中国船舶重工集团公司第七一0研究所;
【基金】：国家部委资助项目(91420A05020514CB40014)
【分类号】：P733.2
[Abstract]:In the three-dimensional shallow sea environment, the sound line deflects horizontally when the sound line is reflected from the inclined seabed. Due to the cumulative effect, the azimuth of the received sound line deviates greatly from the transmitting sound line in the problem of long distance propagation. If ignored, it will bring great error to the work of sound source orientation. Therefore, it is of great significance to study the horizontal deflection of the sound line when it is reflected from the inclined seabed. In this paper, the problem of horizontal deflection of inclined submarine sound line under different parameters is studied systematically by means of ray acoustics, and the approximate formula when the seabed changes slowly is obtained, and the numerical simulation analysis is carried out. The results show that the horizontal deflection of the sound line is determined by the depth gradient of the seabed, the azimuth of the incident sound line and the grazing angle.
【作者单位】： 中国船舶重工集团公司第七一0研究所;
【基金】：国家部委资助项目(91420A05020514CB40014)
【分类号】：P733.2
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