【摘要】：三維淺海環(huán)境下,聲線在傾斜海底反射時,會在水平方向上發(fā)生偏轉(zhuǎn)。在遠距離傳播問題中,由于累積效應,接收聲線的方位角與發(fā)射聲線產(chǎn)生較大的偏差。若忽略不計,將會給聲源定向等工作帶來較大的誤差。因此,研究聲線在傾斜海底反射時的水平偏轉(zhuǎn)問題,并總結其規(guī)律具有重要意義。采用射線聲學的方法系統(tǒng)地研究了不同參數(shù)情況下傾斜海底聲線水平偏轉(zhuǎn)的問題,得到了在海底變化較緩時的近似公式,并進行了數(shù)值仿真分析。結果表明,聲線的水平偏轉(zhuǎn)的大小和方向由海底深度梯度和入射聲線方位角與掠射角共同決定。
[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.
【作者單位】： 中國船舶重工集團公司第七一0研究所;
【基金】：國家部委資助項目(91420A05020514CB40014)
【分類號】：P733.2

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