基于探地雷达频谱反演法的薄层识别技术研究  

Research on Thin-layer Recognition Technique Based on the Spectrum Inversion Method of Ground Penetrating Radar

作　　者：秦瑶[1,2] 陈洁[1] 方广有[1] 阴和俊[3] 

机构地区：[1]中国科学院电子学研究所,北京100190 [2]中国科学院研究生院,北京100039 [3]中国科学院,北京100864

出　　处：《电子与信息学报》2010年第11期2760-2763,共4页Journal of Electronics & Information Technology

基　　金：国家科技支撑计划(2008BADA8B02)资助课题

摘　　要：衡量探地雷达对薄层的识别能力通常有两个指标:最小可识别层厚和反射系数的识别精度。该文提出的频谱反演法,通过对电磁波在多层介质中频谱传输函数的推导,得出回波频谱的正演计算模型,然后采用阻尼最小二乘法进行二参数反演。通过实验,证实了这种方法能够对层厚小于八分之一波长的薄层进行层厚和反射系数的有效识别。Two parameters are normally employed to evaluate recognition ability of the Ground Penetrating Radar（GPR） for the thin-layer：the least recognition thickness and the reflectance recognition precision.In this paper,the spectrum inversion method is used to improve the recognition ability of the GPR.The spectrum transmission function of the multilayer media is firstly deduced,and the forward model of the reflecting wave spectrum is obtained.Then the two parameters are inversed by using the damp least-squares algorithm.The experiment demonstrates that the method can identify the layer effectively with a thickness less then one-eighth wavelength.

关 键 词：探地雷达 薄层 层厚 反射系数 频谱反演 

分 类 号：TN959.71[电子电信—信号与信息处理]