The ability to simulate authentic engagements using real-world hardware is an increasingly important tool. For rendering
maritime environments, scene generators must be capable of rendering radiometrically accurate scenes with correct
temporal and spatial characteristics. When the simulation is used as input to real-world hardware or human observers,
the scene generator must operate in real-time.
This paper introduces a novel, real-time scene generation capability for rendering radiometrically accurate scenes of
backgrounds and targets in maritime environments. The new model is an optimized and parallelized version of the US
Navy CRUISE_Missiles rendering engine. It was designed to accept environmental descriptions and engagement
geometry data from external sources, render a scene, transform the radiometric scene using the electro-optical response
functions of a sensor under test, and output the resulting signal to real-world hardware.
This paper reviews components of the scene rendering algorithm, and details the modifications required to run this code
in real-time. A description of the simulation architecture and interfaces to external hardware and models is presented.
Performance assessments of the frame rate and radiometric accuracy of the new code are summarized.
This work was completed in FY10 under Office of Secretary of Defense (OSD) Central Test and Evaluation Investment
Program (CTEIP) funding and will undergo a validation process in FY11.
Advanced techniques for generating infrared (IR) scenes of a maritime environment for use in an imaging infrared (IIR) Anti-Ship Cruise Missile (ASCM) are discussed. The enhancements include the incorporation of a cluttered sea surface using an improved version of the Mermelstein sea-surface model. The US Naval Research Laboratory has implemented this capability for generating uncorrelated clutter into IR scenes for use in the CRUISE_Missiles ASCM model. These techniques for capturing the more complex features of the environment will become increasingly important as more low-observable (LO) ships, advanced imaging ASCMs and new IR decoy techniques are designed and deployed. This paper presents the design and implementation of a static clutter model, as well as a qualitative validation of the synthesized scenes based on field data.
A new hardware-in-the-loop modeling technique was developed at the US Naval Research Laboratory (NRL) for the evaluation of IR countermeasures against advanced IR imaging anti-ship cruise missiles. The research efforts involved the creation of tools to generate accurate IR imagery and synthesize video to inject in to real-world threat simulators. A validation study was conducted to verify the accuracy and limitations of the techniques that were developed.
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