Gilbert's disc model with geostatistical marking

Author:

Ahlberg Daniel,Tykesson Johan

Abstract

AbstractWe study a variant of Gilbert's disc model, in which discs are positioned at the points of a Poisson process in ℝ2with radii determined by an underlying stationary and ergodic random field φ:ℝ2→[0,∞), independent of the Poisson process. This setting, in which the random field is independent of the point process, is often referred to asgeostatistical marking. We examine how typical properties of interest in stochastic geometry and percolation theory, such as coverage probabilities and the existence of long-range connections, differ between Gilbert's model with radii given by some random field and Gilbert's model with radii assigned independently, but with the same marginal distribution. Among our main observations we find that complete coverage of ℝ2does not necessarily happen simultaneously, and that the spatial dependence induced by the random field may both increase as well as decrease the critical threshold for percolation.

Publisher

Cambridge University Press (CUP)

Subject

Applied Mathematics,Statistics and Probability

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