应用科学学报 ›› 1995, Vol. 13 ›› Issue (4): 491-494.

• 论文 • 上一篇    下一篇

探地雷达的时域有限差分模型

余文华1, 彭仲秋2, 任朗1   

  1. 1. 西南交通大学;
    2. 北京市遥感信息研究所
  • 收稿日期:1993-12-31 修回日期:1994-04-13 出版日期:1995-12-31 发布日期:1995-12-31
  • 基金资助:
    国家自然科学基金资助项目

MODELING OF FOTD OF THE GROUND PROBING RADAR

YU WENHUA1, REN LANG2, PENG ZHONGQIU1   

  1. 1. Southwest Jiaotong University;
    2. Beijing Remote Information Research Institute
  • Received:1993-12-31 Revised:1994-04-13 Online:1995-12-31 Published:1995-12-31

摘要: 本文使用时域有限差分(FDTD)法研究源为三维、介质为二维非均匀(如x-y平面)、沿另一方向(z方向)均匀的情况下,用COS和SIN变换把三维FDTD转化为二维.

关键词: 探地雷达, 透射边界条件, 时域有限差分, 超吸收技术

Abstract: In this paper,the sine and cosine transforms are applied to transform 3 dimension FDTD to 2 dimension FDTD in layered media. We employ the transmitting boundary condition to eliminate reflections from the boundary of the domain,and use the superabsorption technique to improve the accuracy of FDTD.The method is applied to the ground probing radar with satisfactory results.

Key words: FDTD, transmitting boundary condition, superabsorp-tion, radar