摘要
基于结构扫描雷达网格测线的数据采集方式,提出了一种用于钢筋混凝土构件的三维切片成像算法。先用克希霍夫偏移进行聚焦处理,使反射波自动归位到其真实空间位置;再进行三维插值,从少量的测量数据获得重建目标空间的足够信息;最后对两方向的数据信息融合,增强目标反应,减小噪声干扰,提高检测效率。对实验台和实际建筑的检测验证了该算法的有效性和可行性。结果表明,通过对结构扫描雷达数据的三维切片成像,能更加全面而细致地了解钢筋混凝土构件的内部准确信息,使用的算法能清晰分离出点目标和横、纵方向的线性目标,为雷达图谱的解释提供了可靠的方法和依据,对相关检测工程和质量鉴定具有重要意义。
Based on the grid data collection, this paper proposes a 3D slice imaging algorithm for rebar concrete component detection by structure scan radar. First, Kirchhoff migration is used to focus so that the reflection wave is returned to its real space position auto- matically. Then 3D interpolation is carried out to obtain the enough space information of targets for reconstructing with only a few meas- ured data. At last, two direction profiles are fused together to enhance targets response, reduce noise influence, and improve detection efficiency. The detection of experiment platform and true architecture validate the availability and feasibility of the algorithm. The re- suits indicate that exact inner information of rebar concrete component is known comprehensively and meticulously via 3D slice imaging of structure scan radar data. The algorithm can separate dot targets as well as horizontal and vertical linearity targets clearly and supply a credible method and hasis for the explanation of radar profile, thus having great significance for relevant detection project and quality identification.
出处
《物探与化探》
CAS
CSCD
2013年第4期692-695,700,共5页
Geophysical and Geochemical Exploration
基金
国家"十二五"规划项目(51307050402)
关键词
结构扫描雷达
钢筋混凝土
三维切片成像
无损检测
structure scan radar
rebar concrete
3 D slice imaging
non-destructive detection
