Surface Optics Corporation (SOC) has developed, ENSIR (ENSemble IR), a first-principles infrared signature analysis code that incorporates software modules for thermal analysis, atmospheric radiance calculations, signature prediction and radiance mapping. The radiance calculation is based on measured BRDF, HDR and directional emittance data of the surface materials, no data fitting or parameterized models are required. This provides the most fundamental calculation of the target signature. This data is generally produced from the SOC-100 HDR and SOC-200 BDR instruments in a format that is directly read by ENSIR. The radiance module, DETECT, has been incorporated as part of the government standard Optical Signatures Code (OSC) and has been used for many years for producing signatures for strategic target discrimination studies.

An important feature of IR signature analysis is the ability to accurately calculate surface temperatures of the target vehicle. ENSIR provides this ability in the TTRAN module. TTRAN is a fully time-dependent, three-dimensional thermal analysis code.

Key Features

• Fully Validated. ENSIR is the most validated IR signature code on the market. It has been well validated by many government and corporate agencies on many types of targets and backgrounds.
  
• Accuracy and Speed on a Workstation or PC. ENSIR's unique design allows users to develop high fidelity, radiometrically correct IR signatures on multiple platforms.
  
• Fully Time Dependent, three dimensional thermal analysis code. ENSIR's TTRAN module is a fully time-dependent, three-dimensional thermal analysis code, which uses lumped element nodal analysis technique. TTRAN supports multiple conductive, convective and radiative heat transfer paths, and produces transient and steady state temperature predictions with aerodynamic and terrestrial radiant environmental boundary conditions.

View the ENSIR Datasheet in PDF

ENSIR's radiance mapper module provides the capability to distribute the target radiance image into a pixelized display format. The algorithm takes facet radiance's and projects them into a sensor image plane, taking into account range and resolution effects, and accounts for radiance mixing and background fill factors. This provides a convenient interface to sensor models, which convolve sensor MTF effects to produce an image as seen on the sensor display.

Highlights

• Models complex physical phenomena
• BRDF of Materials
• Time-Dependent, three-dimensional thermal analysis
• Conductive heat transfer path
• Convective heat transfer path
• Radiative heat transfer path
• Commercially Available
• Exportable
• Fully Validated
• Validated against measurements of ground and air vehicles
• Provides the capability to distribute target radiance image into a pixelized display format
• Provides convenient interface to sensor models

Export Control

"This item is export controlled and is governed by the International Traffic in Arms Regulations (ITAR) issued by the US Department of State. The receipt of this software creates regulatory obligations for you if you are exporting these items directly or indirectly out of the United States". 

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