中文摘要：

为在浅水里散布的正常模式模特儿被雇用调查向前与穿过来源接收装置的一个目标散布轴的线。一个实验在沿岸的环境被进行分析由一个慢慢地动人的目标的前面的散布。如果对象是沿着来源接收装置线的定位中点，如果对象接近来源或接收装置，理论、试验性的结果证明健全的域错误拿最小的值，而它达到它的最大值。如果目标穿过不同夫累Ｘ尔地区，全部的地也被提高或压制。另外，导致阴影的错误的持续时间依赖于第一个夫累Ｘ尔地区的宽度，它在来源接收装置线的中点是最长的。

英文摘要：

The normal mode model for scattering in shallow water is employed to investigate the forward scattering with a target crossing the source-receiver axial line. An experiment was conducted in a littoral environment to analyze forward scattering by a slowly moving object. The theoretical and experimental results show that the sound field aberration takes minimum values if the object is located mid-point along the source-receiver line, whereas it attains its maximum if the object is close to the source or receiver. The total field is either enhanced or suppressed if the object crosses different Fresnel zones. In addition, the duration of shadow-induced aberration is dependent on the width of the first Fresnel zone, which is longest at the mid-point of the source-receiver line.