Stefanescu, RazvanHite, Jason M.Cook, Jared A.Smith, Ralph C.Mattingly, John2019-05-312019-05-312019-05-28Ştefănescu, R.; Hite, J.; Cook, J.; Smith, R.C.; Mattingly, J. Surrogate-Based Robust Design for a Non-Smooth Radiation Source Detection Problem. Algorithms 2019, 12, 113.http://hdl.handle.net/10919/89655In this paper, we develop and numerically illustrate a robust sensor network design to optimally detect a radiation source in an urban environment. This problem exhibits several challenges: penalty functionals are non-smooth due to the presence of buildings, radiation transport models are often computationally expensive, sensor locations are not limited to a discrete number of points, and source intensity and location responses, based on a fixed number of sensors, are not unique. We consider a radiation source located in a prototypical 250 m × 180 m urban setting. To address the non-smooth properties of the model and computationally expensive simulation codes, we employ a verified surrogate model based on radial basis functions. Using this surrogate, we formulate and solve a robust design problem that is optimal in an average sense for detecting source location and intensity with minimized uncertainty.application/pdfenCreative Commons Attribution 4.0 Internationalrobust design in the average senseParticle Swarmradial basis functionsradiation source detectionArticle - Refereed2019-05-31https://doi.org/10.3390/a12060113