Hybrid Simulation for Electrically Large Aerospace Platforms

Davide Tallini received a Master degree in Telecommunication Engineering summa cum laude from "Sapienza" University of Rome in February 2007. His scientific interests during university were focused on electromagnetic theory and, specifically, the topic of scanning antennas and arrays. He joined CST at the end of 2007 and is currently employed as an application and sales engineer. His main responsibilities are the customer management of the Italian and Turkish market and the coordination of new CST projects.

Starting from the free-space radiation performance of each antenna, the problem to predict the global installed radiation pattern, antenna to antenna coupling in presence of a spacecraft has to be treated in order to identify potential blind areas or interferences caused by the neighboring structures. The prediction of electromagnetic field scattered in complex environment is usually a hard task since the solution cannot be generally expressed in a simple and/or closed analytical form. Even though a variety of numerical methods (e.g FIT, FEM, MLFMM, SBR, etc) have been developed over past decades, the effectiveness of a single method depends on the type of the electromagnetic environment and the working frequencies. The structure of the antenna and the wavelength may be quite small compared to the aircraft platform. 

These simulations typically cannot be done on workstations with FEM or FDTD techniques. The capabilities of taking advantage of more than one numerical method at the same time to get the desired results, is crucial and it commonly refers to so called “hybrid” simulations. The separation of complex problems into multiple parts with the link between them being defined by equivalent near- or far-field sources, can dramatically speed up the installed antenna performance/ antenna co-site analysis and in many cases make possible something otherwise not feasible using a single numerical method. 

This webinar will show how CST STUDIO SUITE® can be applied at each design stage of the antenna/system integration for several scenarios, including a UAV and a satellite. Furthermore the complex platform, either at antenna level or at system level, can be easily and efficiently handled with SAM (System Assembly and Modeling) in a unique integrated interface.