Efficient Hierarchical Meshing Strategy for Surface Temperatures Computation Applied to Ship Infrared Signatures Modeling

Designing stealth technologies for modern war ships requires methods for signatures reduction (radar, infrared, etc). The first step is to conceive a signature simulation software. In [1], [2], we proposed an infrared (IR) ship signature simulation software (OSMOSIS) that can manage parametric emissivity profiles. OSMOSIS comprizes a smart computation time and memory management. The evaluation of the effectiveness of an IR signature reduction method implies being able to simulate the evolution of the signature with time. This implies a huge computation time. In this paper, we propose a hierarchical meshing strategy leading to an important reduction of the computation time. The time complexity of the algorithm is shown to be O(√N), where N is the number of facets resulting from the mesh of the surface of the ship. A performance analysis of the algorithm is also discussed.