# American Institute of Mathematical Sciences

March  2008, 9(2): 375-396. doi: 10.3934/dcdsb.2008.9.375

## Uniqueness in determining multiple polygonal scatterers of mixed type

 1 Department of Mathematics, University of Washington, Box 354350, Seattle WA 98195, United States 2 Department of Mathematics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong

Received  July 2007 Revised  November 2007 Published  December 2007

We prove that a polygonal scatterer in $\mathbb{R}^2$, possibly consisting of finitely many sound-soft and sound-hard polygons, is uniquely determined by a single far-field measurement.
Citation: Hongyu Liu, Jun Zou. Uniqueness in determining multiple polygonal scatterers of mixed type. Discrete and Continuous Dynamical Systems - B, 2008, 9 (2) : 375-396. doi: 10.3934/dcdsb.2008.9.375
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