On the Selection of the best Polarization to Detect Buried Objects by means of POLinSAR

Statistics – Applications

Scientific paper

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Scientific paper

In this work we have reviewed the contribution of POLINSAR to the detection of buried objects (e.g. mines). The starting point, derived from an analysis performed by the polarization subspace method (PSM), is the fact that the scatter- ing mechanisms which maximize the interferometric coherence correspond to circular polarizations (or nearly circular). This means that this polarization should be useful to discriminate the mine from the clutter. Therefore, instead of carrying out the full POLINSAR optimization, we have proceed to compute coherence maps of the scene by employing this type of polarization. First experimental results with real polarimetric data indicate that the coherence maps exhibit very low values in the positions of the mines, whereas the coherence is quite high in the rest of the scene. So, in principle, this parameter can be applied to detect mines. A physical interpretation of these results is currently in progress.

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