Physics-Based Stimulation for Night Vision Goggle Simulation

摘要

Attempts at devising training simulator out-the-window 'night time' displays that can be effectively used by a night vision goggle (NVG)- wearing trainee have yielded NVG display systems of questionable fidelity, stability, and/or repeatability. The 'physics-based' approach reported here first characterizes a display in terms of its absolute dynamic output range for night vision imaging system (NVIS) radiance and then, using that characterization, maps, as possible, to-be-displayed NVIS radiance values of simulated scene objects on to the display itself. Treatment of NVG-specific phenomena, such as 'halos,' is discussed, as are considerations of NVIS cross-illumination in multiscreen displays. Modifications to an existing NVG simulation software module (SensorHost) to accommodate display of NVIS radiance are described. Example NVIS characterizations of various off-the-shelf simulator display systems are detailed.