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为了提高探地雷达的分辨率,降低雷达探测过程中衰减、频散及其他干扰所造成的影响,提出了基于模糊分形脉冲反褶积应用于探地雷达信号的后处理,用分形特征取代反褶积中对反射系数功率谱为白噪的假设,并给出了具体的实现步骤;为了验证该方法的合理性,以直径为100mm的PVC塑料管为标定物,设计了将标定物以不同深度和不同间距埋置在沙体中的模型试验。理论分析和试验结果表明:基于模糊分形脉冲反褶积的原理处理雷达信号,对于降低噪声干扰和提高分辨率有着一定的优势,可作为雷达信号处理方法一种很好的补充。
In order to improve the resolution of GPR and reduce the influence of attenuation, dispersion and other interference in radar detection, a new method based on fuzzy fractal pulse deconvolution is proposed for GPR signal processing. The fractal feature is used instead of the inverse Convolution in the reflection coefficient power spectrum is white noise hypothesis, and gives the specific steps to achieve; in order to verify the rationality of the method to a diameter of 100mm PVC plastic tube as a calibrator, designed to be different from the calibration Model tests of depth and spacing embedded in sand. The theoretical analysis and experimental results show that the processing of radar signals based on the principle of fuzzy fractal pulse deconvolution has certain advantages in reducing noise interference and improving resolution, and can be used as a good complement to radar signal processing methods.