地质雷达频率补偿与校正技术

Ground radar frequency compensation and correction technique

  • 摘要: 雷达波在地下传播过程中会发生衰减、频散和受到其他干扰的影响,这在一定程度上限制了地质雷达的探测分辨率和最终解释效果。为了降低这些影响,在地层系统响应模型基础之上,通过从原始记录中求取频率补偿与校正因子,既而对原始记录的频谱进行补偿校正,达到改善地质雷达剖面记录,提高探测分辨率的目的。为了更好地了解频率补偿与校正技术的有效性,从原理到应用效果给予了详细的介绍,同时与尖脉冲反褶积的应用效果作比较,进一步说明了频率补偿与校正技术在降噪和提高分辨率处理上的一些技术特点。

     

    Abstract: Ground radar wave propagation in ground is influenced by the attenuation,dispersion and other interference,to certain extent,which will limit ground radar detection resolution and final interpretation effect.In order to reduce the attenuation,dispersion and the impact of interference,this paper presented a frequency compensation and correction method,which was based on the stratum system response model,through computing a frequency compensation and correction factor from the ground penetrating radar raw data,the raw recorder spectrum will be corrected,which will improve the ground penetrating radar profile record and enhance the vertical detection resolution.For better understanding of the effect of the stratum spectrum correction method,this article gave detailed introduction of its principle and application effect,but also compared its effect with that of sharp pulse deconvolution,which can further prove that the stratum spectrum correction method has advantage in reducing noise and enhancing resolution of the ground penetrating radar data.

     

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