Abstract: As a new exploration method，Ground Penetrating Radar（GPR） is used in the landmine exploration field.However，in the GPR echo signal，there are some noises and weak object echo signal are often obscured with the strong interference signals.In order to improve the signal-to-noise and identifying the landmine，a new method based on information entropy is presented，the method combine with the wavelet packet de-noise method.The experiment results show the direct wave and background noise can be effective reduced and the object signal can be extracted when the methods are adopted.

摘要： 作为一种新的探雷方法，探地雷达在探雷领域得到了广泛的应用。由于雷达回波信号包含有很多杂散信号，目标信号很容易被强噪声信号所淹没，为了提高雷达回波信号的信噪比，有利于地雷的识别和检测，提出了一种基于信息熵的最优基选择与小波包阈值去噪相结合的方法对回波信号进行杂波抑制，采用该方法对DeTeC的数据进行分析的实验结果表明，该方法在有效地去除了直达波的同时，抑制了背景噪声，分离出目标信号。