Determination of coefficients for a dissipative wave equation via boundary measurements

In this paper we consider the inverse problem of recovering the viscosity coefficient in a dissipative wave equation via boundary measurements.We obtain stability estimates by considering all possible measurements implemented on the boundary.We also prove that the viscosity coefficient is uniquely determined by a finite number of measurements on the boundary provided that it belongs to a given finite dimensional vector space.  2005 Elsevier Inc. All rights reserved