lucernhammer : Electromagnetic Signature / Radar Cross Section Prediction

Overview

lucernhammer MT is a high-frequency (or asymptotic) radar cross section (RCS) calculation engine. It is designed around the high-resolution triangle mesh CAD model, or "facet file." It will read Xpatch/ACAD compatible facet and edge files directly with no modifications. lucernhammer MT also has a built-in edge generator which allows it to generate the diffracting edge list on the fly if desired.

lucernhammer MT 1.6 Feature Details

Monostatic and Bistatic first-bounce far field and RCS calculations of triangle mesh targets which are PEC, or mutiple-layered dieletric media over PEC.
First-bounce physical optics employs direct facet-level integration with automatic polygon subdivision and high-precision ray tracer blockage checking. Blockage checking details are in the direct control of the user and can be adjusted to speed the run time.

First-bounce physical optics may also be made through the use of a Z-Buffer hidden surface removal scheme, which allows very fast first-looks at the RCS of complicated objects without using ray tracing.
Monostatic and Bistatic edge diffraction contributions from three-dimensional PEC wedges using Mitzner's ILDC formulation. User may select between automatic edge generation algorithms, or read in an edge geometry file from disk

Multiple-bounce scattering calculations using the Shooting and Bouncing Ray method. Multibounce uses a custom implementation of the SBR method based on rectangular ray-tubes.

Time-domain based fast SBR acceleration using scattering-center method proposed by Bhalla and Ling.
Stencil-buffer SBR acceleration mode.
Monostatic and Bistatic scattering prediction of individual point scatterers in the presence of the facet geometry model.
Monostatic and Bistatic scattering prediction of cracks and bumps using Shore and Yaghjian's Incremental Length Diffraction Coefficients (ILDCs). This is good for simulation of small surface features such as field joints and weld seams.
Allows constraint of SBR calculations to a pre-defined angular sector of space, allowing the user to specify where multibounce should be performed, and where it should be neglected

Select which of the PO, PTD, SBR, and ILDC calculations are to be done

Save and read PO, PTD, SBR and ILDC field contributions individually to and from disk (in the lucernhammer binary signature format). The user can post-process these portions of the calculation with fieldian for analysis in trade studies.

Accepts defined materials coating properties versus frequency, or user-defined reflection coefficient tables.
Can do uniformly spaced sweeps over angles and frequency, or accept arbitrary lists of angles and frequency from file.
Supports an arbitrary number of run-time geometry files, allowing the user to specify separately the pieces of a composite scene.
Full parallel processing capability using POSIX threads for multi-processor computer systems.

lucernhammer MT is a console based application, and therefore has a very small memory footprint and can be easily run inside scripts and batch jobs.