为实现小凸多面物体面形快速重建，提出了基于投影轮廓的新方法。

A projective silhouette based method was proposed to reconstruct the shape of little convex polyhedron.

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作为CT中背投影响的推广，给出了球背投影的概念，进而提出了由散射近场重建理想导体目标轮廓的球背投影法及其实现算法。

As extension of the back-projection, a concept of spherical back-projection(SBP)is proposed, and then a SBP algorithm is presented to reconstruct near-field microwave images of conducting objects.

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