瞬时属性估计器在探地雷达数据处理中的应用

为了提高浅层埋藏目标识别的瞬时物理属性的精度,根据极平坦频率特性有限脉冲相应滤波器的思想,首次提出用它作为微分器和延时器组成解析信号瞬时属性估计器（FIFM）,对探地雷达信号的瞬时属性进行提取。结果表明,瞬时属性剖面的分辨率得到了明显的提高;采用瞬时属性估计器进行探地雷达信号瞬时参数的研究是一种非常有效的方法,可用于公路、桥梁、隧道等结构物的无损检测数据分析。

Instantaneous attributes estimator using in ground penetrating radar data

In order to advance the identifying power of the buried objects and improve the estimate precision of the ground penetrating radar(GPR) data instantaneous attributes.The instantaneous attributes estimator of analytic signal is composed of the differentiator and integrator based on FIR filters having maximally flat frequency response.They first are applied to study the instantaneous attributes in GPR data and compare with the center difference method(CFDM).The results find that the resolving power is advanced using the instantaneous frequency estimator of filter(FIFM)in GRP data.It is proved that the FIFM method is very valid to deal with the GPR data and can be applied identifying the position and shape of the buried objects.