Hyperspectral Imaging for Environmental Applications -
Highly reliable geospatial data products
Low Altitude Imaging for Global Change Monitoring
Northrop Grumman's Global Change Monitoring Systems provide essential information for climate-sensitive industries and environmental applications through technology solutions.
Now, with Northrop Grumman's latest hyperspectral instrument, the Hyperspectral Airborne Terrestrial Imager (HATI), high resolution images of the full solar spectrum reflected from any environmental scene can be captured.
This compact and fully operational airborne sensor builds on Northrop Grumman's calibration expertise and complements the company's spaceborne hyperspectral sensor, Hyperion, and the high-accuracy radiometer CERES instruments, currently in space.
HATI's spectral imaging provides accurate surface characterization and, with timely processing, produces highly reliable geospatial data products for many climate and environmental applications.
- Spectral range 400 nm to 2500 nm, with more than 700 spectral bands
- 1 m ground resolution and typical signal to noise (SNR) values greater than 800:1 peak
- Radiometrically-accurate data (≤ 5%), traceable to National Institute of Standards and Technology
- Integrated geo-referencing for accurate ground location (< ¼ pixel)
- Atmospheric correction for spectral matching and feature identification
Products and Applications
Standard products include mosaic hyperspectral data cubes (Level 2 data) – atmospherically corrected, geo-referenced and accurately calibrated data. Quantitative reflectance data is used for vegetation health characterization, chemical composition analysis, as well as accurate spectral matching with source material libraries.
Higher level data products include those based on pre-determined vegetation indices or ratios for water quality and other remote sensing data products, such as aerosol optical depth. With high radiometric accuracy and traceability, HATI can also meet the demand for long-term trend detection for climate data records.
For researchers and scientists, this high volume of accurate data provides highly reliable data streams for urban transformation studies, terrestrial and oceanic ecosystems characterization, and multi-disciplinary, long-term climate research.
For civil and military users, access to this data facilitates more detailed and accurate assessments of land and water areas, cross-calibration with surveillance assets, battle damage, and surface characterization for change detection after natural disasters, all with much more information than a photographic survey.