Migration based SAR imaging for ground penetrating radar systems
Migration based SAR imaging for ground penetrating radar systems
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DOI：
10.1049/ip-rsn:20040973
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发表时间：
2004-11
期刊：
影响因子：
--
通讯作者：
Kunlong Gu;Gang Wang;Jian Li
中科院分区：
文献类型：
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作者：
Kunlong Gu;Gang Wang;Jian Li
作者认为偏移的合成孔径雷达（SAR）成像的表面或浅埋物体使用下视和前视探地雷达（GPR）。众所周知的偏移方法是基于波动方程设计的，用于成像地球内部，并且几十年来已广泛且成功地用于石油勘探的地震信号处理。它们具有对埋在复杂传播介质中的地下目标成像的潜力。相对于射线跟踪SAR成像方法，偏移SAR成像方法更适合于地下目标成像，因为它简单直接地处理了地气界面的斜入射和土壤中的传播速度变化。作者将相移偏移方法应用于PSI探地雷达系统采集的常炮检距和共炮实验数据。他们解决了空间混叠问题的应用程序迁移到GPR数据和空间零填充的方法，以规避成功的问题。
The authors consider migration based synthetic aperture radar (SAR) imaging of surface or shallowly buried objects using both down-looking and forward-looking ground penetrating radar (GPR). The well known migration approaches devised to image the interior of the Earth are based on wave equations and have been widely and successfully used in seismic signal processing for oil exploration for decades. They have the potential to image underground objects buried in complicated propagation media. Compared to ray-tracing based SAR imaging methods, migration based SAR imaging approaches are more suited to imaging underground objects owing to their simple and direct treatment of oblique incidence at the air-ground interface and propagation velocity variation in the soil. The authors apply the phase-shift migration approach to both constant-offset and common-shot experimental data collected by PSI GPR systems. They address the spatial aliasing problems related to the application of migration to the GPR data and the spatial zero-padding approach to circumvent the problem successfully.