CDE is the model manager for several government owned directed energy modeling and simulation codes developed with support from the High Energy Laser Joint Technology Office (HEL JTO). These models are available to the DoD DE and DoD contractor communities.
Requests for these products can be made via the software request form.
Brief descriptions of the CDE developed models available can be found below:
The High Energy Laser End-to-End Operational Simulation (HELEEOS) has been developed by the Air Force Institute of Technology's Center for Directed Energy (CDE). HELEEOS is a fast running Matlab-based model. HELEEOS is available as an executable with a Windows install program.
HELEEOS is anchored to respected wave optics codes and all significant degradation effects, including thermal blooming and optical turbulence, are represented in the model. Furthermore, the model incorporates realistic total system weight constraints. Currently HELEEOS offers both scaling relationships developed at AFIT as well as use of the Scaling for HEL and Relay Engagement (SHaRE) scaling laws. SHaRE provides detailed modeling of multiple relay mirrors and adaptive optics performance, crucial for many scenarios. Key features of HELEEOS include climatological, seasonal, diurnal, and geographical spatial-temporal variability in molecular and aerosol absorption and scattering profiles and optical turbulence strength, and a methodology to estimate the level of uncertainty in the calculated probability of kill (Pk). Probability of kill, required dwell time, and effective range as functions of engagement parameters such as range, aperture diameter, and dwell time, are used as typical evaluation metrics. HELEEOS has been recently expanded to model atmospheric effects pertinent to directed energy scenarios for wavelengths between 0.4 mm and 8.6 m.
Technical Point of Contact Information
The Laser Enviornmental Definition and Reference (LEEDR) was also developed by CDE. LEEDR is a freestanding Matlab executable product, derived from the HELEEOS engine that calculates the effects of the atmosphere and its constituent components on directed energy propagation between 0.4 µm and 8.6 m. LEEDR can be used in its stand alone form to query the ExPERT database to create profiles of meteorological data and effects for thousands of land/ocean sites worldwide. Vertical data profiles and cloud free line of sight (CFLOS) can be produced from probabilistic climatology, historical reanalysis grids, or real-time forecast models to generate atmospheric inputs for a variety of modeling and simulation products. The Technical Point of Contact for LEEDR is:
The High Energy Laser Consolidated Modeling Engagement Simulation (HELCOMES) is developed and maintained by Scientific Applications International Corporation (SAIC). HELCOMES is a multi-faceted end-to-end directed energy engagement simulation that runs in a Java environment. HELCOMES is anchored to waveoptics, runs on a PC, and has an integrated Users Guide and Help function.
Northrop Grumman-IT developed the The High Energy Laser System End-to End Model (HELSEEM) for the HEL JTO. This product, provided as a C-executable was designed to serve as a "message broker" software allowing for utilization of data from several sources. HELSEEM also possesses scene generation capability.
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