Airborne EO imagery, including wideband, hyperspectral, and multispectral modalities, has greatly enhanced the ability
of the ISR community to detect and classify various targets of interest from long standoff distances and with large area
coverage rates. The surf zone is a dynamic environment that presents physical and operational challenges to effective
remote sensing with optical systems. In response to these challenges, BAE Systems has developed the Tactical Multi-spectral
(TACMSI) system. The system includes a VNIR six-band multispectral sensor and all other hardware that is
used to acquire, store and process imagery, navigation, and supporting metadata on the airborne platform. In
conjunction with the hardware, BAE Systems has innovative data processing methods that exploit the inherent
capabilities of multi-look framing imagery to essentially remove the overlying clutter or obscuration to enable EO
visualization of the objects of interest.
The design, operation, and performance of the fourth generation of Science and Technology International's Advanced Airborne Hyperspectral Imaging Sensors (AAHIS) are described. These imaging spectrometers have a variable bandwidth ranging from 390-840 nm. A three-axis image stabilization provides spatially and spectrally coherent imagery by damping most of the airborne platform's random motion. A wide 40-degree field of view coupled with sub-pixel detection allows for a large area coverage rate. A software controlled variable aperture, spectral shaping filters, and high quantum efficiency, back-illuminated CCD's contribute to the excellent sensitivity of the sensors. AAHIS sensors have been operated on a variety of fixed and rotary wing platforms, achieving ground-sampling distances ranging from 6.5 cm to 2 m. While these sensors have been primarily designed for use over littoral zones, they are able to operate over both land and water. AAHIS has been used for detecting and locating submarines, mines, tanks, divers, camouflage and disturbed earth. Civilian applications include search and rescue on land and at sea, agricultural analysis, environmental time-series, coral reef assessment, effluent plume detection, coastal mapping, damage assessment, and seasonal whale population monitoring
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