POGCROS (Physical Optic/Geometrical Optics Code for Radar Cross Section Computation) is an extremely efficient and fast computer tool for the analysis of Radar Cross Section (RCS) of electrically large complex targets.

The targets can be formed by Perfect Electric Conductors (PEC), dielectric or magnetic materials or PEC covered by Radar Absorbing Materials (RAM). POGCROS can also treats the interaction of terrestrial or maritime targets with their surrounding environment.

The targets are geometrically represented by a collection of flat facets or NURBS (Non-Uniform Rational B-Spline Surfaces). The geometry can be generated by the most used Computer Aided Geometrical Design (CAGD) tools such as Autocad, Rhino, etc

POGCROS works in any computer system or PC with Windows or LINUX. Highly parallelized versions for multiprocessors computers or clusters are available.

POGCROS is very flexible and can be adapted to the needs of each user. Partial or total services assistance under client demand is also available.

The user interface of POGCROS is very friendly and graphical and permits to show and build geometries easily, to set options, to see results and other different options.

The electromagnetic kernel of the code is based on Geometrical Optics (GO), Physical Optics (PO) and the Equivalent Currents Method (ECM). Fresnel´s reflection coefficients are included in the PO approach to take into account RAM and other materials.

The following contributions to the RCS are taken into account: reflection, diffraction, double reflection, diffraction-reflection, double-reflection-diffraction and triple and higher order reflections.

A combination of the Angular Z-Buffer (AZB) and the Volumetric Space Partitioning (SVP) and the A* heuristic algorithms is applied for accelerating the ray-tracing. This combination permits compute very efficiently in terms of CPU-time and memory storage the RCS of electrically large and complex bodies modeled by a high number of flat and/or curve surfaces taking into account rays with multiple reflections is a computer tool for obtaining the Radar Cross Section (RCS) of electrically large objects modeled by patches considered as perfect conductors or/and coated with RAM material.

VALIDATION / STATUS

POGCROS has been successfully validated comparing predictions and measurements of several aircrafts, tanks and ships. POGCROS is operative and commercially available. POGCROS is an evolution of a previous code called FASCRO. The following Companies or Organizations have purchased FASCRO POGCROS licenses: INTA, CASA, EADS, FGAN, SAAB, ERICSON and DASA.