Object shape determination using incomplete data in a stratified medium

Yongzhi Xu

doi:10.1117/12.241143

24 May 1996 Object shape determination using incomplete data in a stratified medium

Yongzhi Xu

Proceedings Volume 2756, Automatic Object Recognition VI; (1996) https://doi.org/10.1117/12.241143
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

Wave scattered by an object in a stratified medium is much different from that in a homogeneous medium. In a stratified medium, the scattered energy is not spread out spherically. Therefore, the scattered far-field consists of two components: free-wave far-field and guided-wave far-field. In many cases only free-wave far-field or only guided-wave far- field can be measured. Our research concerns the problems of determining the shape of scatterer from the incomplete far-field data. We have found that the choice of incident waves is very important in determination of the shape of the unknown object from only free-wave far-field or only guided-wave far-field. We obtained analytical relations of the object, incident wave and scattered free-wave far-field and guided-wave far-field. These relations are used in reconstruction of the shape of unknown object numerically.

Citation Download Citation

Yongzhi Xu "Object shape determination using incomplete data in a stratified medium", Proc. SPIE 2756, Automatic Object Recognition VI, (24 May 1996); https://doi.org/10.1117/12.241143

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