Reconstructing initial data using observers : error analysis of the semi-discrete and fully discrete approximations

Details Reconstructing initial data using observers : error analysis of the semi-discrete and fully discrete approximations Reconstructing initial data using observers : error analysis of the semi-discrete and fully discrete approximations

2010-08-27

arxiv.org/abs/1008.4737v1

Mathematics

Numerical Analysis

38 pages, 1 figures

Scientific paper

A new iterative algorithm for solving initial data inverse problems from partial observations has been recently proposed in Ramdani, Tucsnak and Weiss [15]. Based on the concept of observers (also called Luenberger observers), this algorithm covers a large class of abstract evolution PDE's. In this paper, we are concerned with the convergence analysis of this algorithm. More precisely, we provide a complete numerical analysis for semi-discrete (in space) and fully discrete approximations derived using finite elements in space and finite differences in time. The analysis is carried out for abstract Schr\"odinger and wave conservative systems with bounded observation (locally distributed).

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