【摘要】 从GPR工程实践需求出发,提出了一种新的保留小波分解系数的方法,即全分量层相乘滤波,主要包括2个步骤:对GPR剖面作小波分解,分量层对应相乘得到空间滤波器;用得到的滤波器与各分量层的小波系数直接相乘,得到滤波后的小波系数,重构得到处理后的剖面.依据分量层相乘办法的不同可分为分量层递推相乘(DM1)和全分量层相乘(DM2).DM2在提取GPR剖面目标反射中的实际应用表明,该方法能突出有用信号,进行目标提取.更多还原

【Abstract】 According to GPR data processing practice,a new technique about wavelet coefficients selection is put forward,which is also called wavelet details multplying filter.There are two steps:firstly,it is decomposing the GPR data section and producing the space filter by multiplying all the details;secondly,the wavelet coefficients after filtering are got by multiplying directionally space filter with the wavelet coefficients of each detail and the processed section is reconstructed by those wavelet coefficients.According to multiplying,the details multiplying has two formals: DM1 and DM2.It is proved that the method can visualize the efficient information and abstract the object by the application of DM2 in abstracting the reflection of the GPR section.更多还原