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NewFASANT - Fasant Module
FASANT is a very efficient computer tool for the 3D analysis of antennas on board satellites, aircrafts and other complex bodies. It is also used for outdoor and indoor radio propagation analysis. The kernel of the module is based on Geometrical Optics (GO), Physical Optics (PO) and the Uniform Theory of Diffraction (UTD).
FASANT works in any modern PC with Windows. Versions for other operating systems and computers are also available. Parallelized versions of the module are available.
FASANT is very flexible and can be adapted to the needs of each user. Partial or total assistance under client demand is also available.
The module has a friendly graphical interface that permits to build the geometry, visualize the geometry from any point of view, locate the antenna, visualize the ray tracing paths, define all the analysis data, show graphically the results and many other features. FASANT can import geometries from many CAD tools such as: AUTOCAD, RHINO, etc.
The structure under analysis is modelled by flat and/or curved surfaces (NURBS). The geometrical files are in DXF or IGES formats, which can be generated by using the most popular Computer Aided Geometrical Design (CAGD) tools such as Autocad, Rhino, etc.
A combination of the Angular Z-Buffer (AZB), the Volumetric Space Partitioning (SVP) and the A* heuristic algorithms is applied in order top accelerate the ray-tracing analysis. This combination allows very efficient computation in terms of CPU-time and memory storage of the interaction of antennas with electrically large and complex platforms modeled by a large number of flat and/or curve surfaces, taking into account rays with multiple reflections, diffractions and creeping waves.
Coupling between pairs of antennas, radiation patterns and near-field values can be obtained considering direct, reflected, edge-diffracted, slope diffracted, corner diffracted, creeping wave rays and any combination of these (eg., double reflected rays, triple or higher order reflected rays, reflected-diffracted-reflected rays, etc ). The results can be represented graphically. The ray tracing (totally or partially), or each component of the ray-tracing process can be visualized and computed separately of the rest of the effects.
FASANT has been successfully validated by the Spanish National Aerospatial Agency (INTA) and by the French Centre National d'Etudes Spatiales (CNES) comparing predictions and measurements in a satellite platform. Antenna coupling and radiation patterns have been considered in the validation. FASANT is operative and commercially available. The following companies or Organizations have purchased FASANT licenses: INTA, SAAB, ERICSON, DASA, CSELT, ALENIA, Kawasaki Heavy Industries , MITSUBISHI HEAVY INDUSTRY, MATRA, ELTA, University KTH of Swede, University of Singapore, University of Seoul and the University of Texas.
