A novel gpr antenna that is the dipole with discrete exponential resistive above the image plane is present in paper 本文将给出一种新型的探地雷达天线，该天线为置于镜像面上且具有离散指数电阻加载的单偶极子。
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3 . detailed analyzing the reason for the discrete reaching law to cause system chattering is given and three improved discrete reaching law is developed 其次，详细分析了离散指数趋近律抖振产生的原因，给出两种改进方案，并与其它方法进行了比较。
