Accession Number : ADA302222

Title :   Applications of Hyperspectral Data in Coastal Marine Environments.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB STENNIS SPACE CENTER MS

Personal Author(s) : Terrie, Gregory E.

PDF Url : ADA302222

Report Date : 17 NOV 1995

Pagination or Media Count : 59

Abstract : High resolution spectral data collected during field exercises at Eglin Air Force Base, near Fort Walton Beach, Florida, during August 1994 are presented to demonstrate the usefulness of this type of data for estimating the reflectance of land and water features in a coastal marine environment. The data consists of spectral imagery collected by the Compact Airborne Spectrographic Imager (CASI) and in-situ spectral data measured by the Analytical Spectral Devices, Inc. VNIR FieldSpec (ASD). A remote sensing reflectance model is used to compute water reflectance from the CASI and ASD data. The good agreement between the CASI and ASD results suggest that airborne and eventually spaceborne hyperspectral sensors can be used to measure water reflectance. The spectral reflectance signatures of several land features found at the Eglin test site demonstrate that hyperspectral data is a valuable tool for distinguishing between features. Principal component analysis is also used in an effort to reduce the dimensionality of the hyperspectral data. The results show that, for both the CASI and ASD data, over 90% of the variability of the data is contained in the first two principal components. The data analysis procedures developed to process both the CASI and ASD data are also presented. jg p7

Descriptors :   *COASTAL REGIONS, *WATER, *HIGH RESOLUTION, *SPECTRA, *REFLECTANCE, *OCEAN ENVIRONMENTS, *LAND AREAS, DATA PROCESSING, MEASUREMENT, MODELS, AIRBORNE, THESES, IMAGES, REMOTE DETECTORS, AIR FORCE FACILITIES, TEST FACILITIES, SPECTROGRAPHY, SPECTRUM SIGNATURES.

Subject Categories : Physical and Dynamic Oceanography
      Geography
      Atomic and Molecular Physics and Spectroscopy
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE