| 探地雷达小目标信号时频特征分析 |
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| 引用本文： | 黄吉林,黄忠来,张建中,黄忠.探地雷达小目标信号时频特征分析[J].厦门大学学报(自然科学版),2011,50(1):17-23. |
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| 作者姓名： | 黄吉林 黄忠来 张建中 黄忠 |
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| 作者单位： | 厦门大学信息科学与技术学院,福建,厦门,361005 |
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| 基金项目： | 国家自然科学基金资助项目(40774065) |
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| 摘 要： | 研究了单个和两个物体的探地雷达(ground penetrating radar,GPR)信号时域和时频域特征随物体尺寸、相距距离、介电常数的变化规律,给出了广义S变换(generalized S transform,GST)参数和双峰属性频点选取的方法以及小物体的定义,讨论了通过提取时频域的双峰属性来提高对单个物体上下界面反射波和两个物体回波的分辨率.并且指出了结合GPR信号时域和时频域特征以及双峰属性,可以大致估计单个物体的大小和两个物体之间的距离范围.
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| 关 键 词： | 探地雷达 广义S变换 双峰属性 分辨率 |
Time-frequency Characteristics Analysis of Ground Penetrating Radar Signal of Small Targets |
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| HUANG Ji-lin,HUANG Zhong-lai,ZHANG Jian-zhong,HUANG Zhong.Time-frequency Characteristics Analysis of Ground Penetrating Radar Signal of Small Targets[J].Journal of Xiamen University(Natural Science),2011,50(1):17-23. |
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| Authors: | HUANG Ji-lin HUANG Zhong-lai ZHANG Jian-zhong HUANG Zhong |
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| Institution: | HUANG Ji-lin,HUANG Zhong-lai,ZHANG Jian-zhong,HUANG Zhong(School of Information Science and Technology,Xiamen University,Xiamen 361005,China) |
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| Abstract: | The variation regularity of characteristics of ground penetrating radar(GPR) signal of one object and two objects according to the size,distance and permittivity in time domain and time-frequency domain was studied in the paper,the selection rule of parameter and frequency point of twin-peak attribute of generalized S transform(GST) as well as the definition of a small object were given,the resolution improvement of two reflections of one object and two echoes of two objects through twin-peak attribute of G... |
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| Keywords: | ground penetrating radar generalized S transform twin-peak attribute resolution |
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