%0 Journal Article
%T A 3-D staggered grid PSTD method for borehole radar simulations in dispersive media<br>三维错格时域伪谱法在频散介质井中雷达模拟中的应用
%A LI Zhan-Hui
%A HUANG Qing-Hua
%A WANG Yan-Bin
%A <br>李展辉
%A 黄清华
%A 王彦宾
%J 地球物理学报
%D 2009
%I 
%X A finite difference time domain (FDTD) method is usually used to simulate borehole radar. However, it takes too much time and space for simulating a model with a relative large scale. A pseudospectral time domain (PSTD) method has the advantage of saving time and computer memory for the same simulation accuracy as that of FDTD. Thus we adopted a PSTD to simulate 3-D borehole radar in dispersive media. In order to suppress the Gibbs phenomenon of point source for PSTD, we set two points as sources in one direction and introduced a staggered grid. As an example for Debye dispersive media, we applied the second order Runge-Kutta method to the calculation in the time domain. This approach is stable for the media we are interested in. Comparing with the central time-differencing method, the approach adopted in this study is much easier for programming.
%K Pseudospectral time domain (PSTD)
%K Finite difference time domain (FDTD)
%K Borehole radar
%K Perfectly Matched Layer (PML)
%K Runge-Kutta method<br>伪谱法
%K 时域有限差分
%K 井中雷达
%K 完全匹配层(PML)
%K Runge-Kutta方法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=76ABDBFC9019580EE9D340C40BD9F8B4&yid=DE12191FBD62783C&vid=286FB2D22CF8D013&iid=DF92D298D3FF1E6E&sid=E1BA6CA93A8F9A6A&eid=CC5F4A47280A3584&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=1&reference_num=20