Abstract
A geometric parameter estimation algorithm is proposed to quantify location and size of objects hidden in stratified media. Unlike conventional ground penetrating radar images, focused near-field microwave images are reconstructed. Due to the lensing effect, primary coherent images tend to present inaccurate size of the embedded targets. However, the lensing effect could be exploited to cast shadows of the buried objects onto the rear interface. The shadow image shows the accurate size information. To quantify the location and size, the approach of spatial moments is investigated. The efficiency of the proposed geometric parameter estimation algorithm is demonstrated based on measurements of multiple targets buried in layered environments.
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