This paper considers the problem of optimal sensor selection in a worst-case setup. Our objective is to estimate a given quantity based on noisy measurements and using no more than n sensors out of a total of N available, possibly subject to additional selection constraints. Contrary to most of the literature, we consider the case where the only information available about the noise is a deterministic set-membership description and the goal is to minimize the worst-case estimation error. While in principle this is a hard, combinatorial optimization problem, we show that tractable convex relaxations can be obtained by using recent results on polynomial optimization.
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