4-D MW/LW IR Hyperspectral Sensor

The emergence of dual band IRFPAs opens the opportunity for development of hyperspectral sensors that simultaneously cover both the MWIR and LWIR spectral range. To address the specific issue related to hyperspectral imaging of time-dependent events suchas rocket engine firing, OKSI is proposing a novel design of a sensor called the 4D-IS (4-dimensional Imaging Spectrometer) that is capable of capturing the full 2-D spatial image of the scene, as well as the spectral signature of each scene pixel, in asingle camera snapshot. Multiple snapshots produce multiple time evolved image cubes. Using dual band IRFPAs, the instrument also employs a novel spectrograph design that allows capturing such image cubes across the two spectral regions of the IRFPA.Suchan instrument provides unique capabilities for time-dependent events from rocket plume imaging, to explosions, to other experimental methods that observe time dependent events.