%0 Journal Article
%T Modeling of acoustic scattering by sphere on a planar seabed<br>平面海底界面上球体目标的声散射建模研究
%A CAO Zheng-Liang
%A DU Shuan-Ping
%A ZHOU Shi-Hong
%A WANG Fang-Yong
%A <br>曹正良
%A 杜栓平
%A 周士弘
%A 王方勇
%J 地球物理学报
%D 2010
%I 
%X A model of acoustic scattering from spherical target above a planar seabed is advanced to a condition of irradiation by a point source, with both of T matrix method and complex images method. Compared to the model of Fawcett and Lim, this model could be used to calculate scattering field from a target above a planar interface in three dimension space. Comparing some coefficients by complex images method with that by analytical formula or numerical quadrature, the computing method of the model is examined to be efficient and accurate. In addition, numerical examples of a rigid sphere and an elastic spherical shell are compared for scattering field from the target on a fluid seabed, and the scattering field dependent angle is investigated from the different grazing angle of incident wave. In order to verify the model, an experiment is carried out to measure scattered field received by vertical array in laboratory. Data are analyzed and compared with calculated results.
%K Acoustic scattering
%K Planar seabed
%K Spherical target
%K T matrix method
%K Complex images method<br>声散射
%K 平面海底
%K 球体目标
%K T矩阵方法
%K 复像方法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=A74141C608EBBB9D8902D1395CE9364C&yid=140ECF96957D60B2&vid=8E6AB9C3EBAAE921&iid=0B39A22176CE99FB&sid=238BD7580EFCC5AE&eid=FED44C0135DC1D9C&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=0&reference_num=25