Visualisation and Grid applications of electromagnetic scattering from aircraft精品.pdf

Visualisation and Grid applications of electromagnetic scattering from aircraft Mark Spivack∗ Andrew Usher, Xiaobo Yang † Mark Hayes‡ August 15, 2003 Abstract Electromagnetic scattering behaviour plays a central role in the design of aircraft and other complex structures. This paper describes progress on visualisation tools in this area and on initial development of a web portal to enable scientists at remote locations to collaborate. 1 Introduction The study of electromagnetic scattering has a central role in the design and remote sensing of aircraft and other complex structures. Engineers may use calculations of radar scattering behaviour, for example, to optimise the design of shape and of material properties, with collaborating scientists often at geographically remote sites. This paper describes progress on visualisation tools for electromagnetic scattering and on the initial development of a web portal interface to the scattering codes. Both aspects are expected to be of use for similar projects in the future. The visualisation tools allow interactive examination of scattering pat- terns across the structure surface, and of the radar cross section (RCS) and electromagnetic fields in 3D space around and within the structure. The high computational cost makes interactivity particularly demanding. Interpolation is first used to provide higher-resolution interrogable data, from values calculated at an initial set of points. Several representations can then be applied, to allow investigation of key features in radar data, their causes, and how they can be eliminated. The user can for example view isosu