Estimation of time delay and interface roughness by GPR using modified MUSIC

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• 作者：Meng Sun^a ; Cé ; dric Le Bastard^b ; ^a ; Nicolas Pinel^c ; Yide Wang^a ; Jianzhong Li^a ; ^d ; ^{jianzhong.li@etu.univ-nantes.fr" class="auth_mail" title="E-mail the corresponding author} ; Jingjing Pan^a ; Zhiwen Yu^d
• 关键词：Ground Penetrating Radar (GPR) ; Time-Delay Estimation (TDE) ; Roughness ; Modified MUSIC ; Method of Moments (MoM) ; Maximum Likelihood method (MLE)
• 刊名：Signal Processing
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：132
• 期：Complete
• 页码：272-283
• 全文大小：1194 K

文摘

In civil engineering, roadway structure evaluation is an important application which can be carried out by ground penetrating radar. In this paper, firstly a signal model taking into account the influence of interfaces roughness (surface and interlayer) is proposed. In order to estimate the time delay and interface roughness, we propose a method composed of 2 steps: 1) a modified MUSIC algorithm is proposed for time delay estimation; 2) the interface roughness is estimated by using Maximum Likelihood method (MLE) with the estimated time delays. The proposed algorithms are tested on data obtained by a method of moments (MoM). Numerical examples are provided to demonstrate the performance of the proposed algorithm.