Study on Signal Processing of FMCW Ground Penetrating Radar
In this paper, a frequency-modulated-continuous wave (FMCW) ground penetrating radar (GPR) is developed and used to measure the thickness of concrete/asphalt layers of highways/airports. If the thickness of the layer is thin, measurement may be impossible using traditional DFT method since the frequencies of reflected waves are very close and the week waves reflected from underground layers will be submerged by the strong one reflected from the pavement surface. An adaptive filtering method is presented to eliminate the strong wave reflected from the pavement surface and thus the week waves reflected from the underground layer surfaces can be detected. Then the modified frequency estimation method is proposed to enhance the frequency estimation precision of FMCW GPR signal. Simulation experiment results have demonstrated the effectiveness of the proposed method.
ground penetrating radar thickness measurement adaptive filtering modified frequency estimation
Huaqing Liang Zhiqiang He
Department of Electronics and Information Engineering China University of Petroleum Beijing 102249,C China Petroleum West Pipeline Co.,LTD.China National Petroleum Co.Wulumuqi 830012,China
国际会议
长沙
英文
528-531
2009-04-11（万方平台首次上网日期，不代表论文的发表时间）