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AIS spectra of desert shrub canopiesAirborne Imaging Spectrometer (AIS) data were collected 30 August 1985 from a desert shrub community in central Oregon. Spectra from artificial targets placed on the test site and from bare soil, big sagebrush (Artemesia tridentata wyomingensis), silver sagebrush (Artemesia cana bolander), and exposed volcanic rocks were studied. Spectral data from grating position 3 (tree mode) were selected from 25 ground positions for analysis by Principal Factor Analysis (PFA). In this grating position, as many as six factors were identified as significant in contributing to spectral structure. Channels 74 through 84 (tree mode) best characterized between-class differences. Other channels were identified as nondiscriminating and as associated with such errors as excessive atmospheric absorption and grating positin changes. The test site was relatively simple with the two species (A. tridentata and A. cana) representing nearly 95% of biomass and with only two mineral backgrounds, a montmorillonitic soil and volcanic rocks. If, as in this study, six factors of spectral structure can be extracted from a single grating position from data acquired over a simple vegetation community, then AIS data must be considered rich in information-gathering potential.
Document ID
19870003554
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Murray, R.
(Oregon State Univ. Corvallis, OR, United States)
Isaacson, D. L.
(Oregon State Univ. Corvallis, OR, United States)
Schrumpf, B. J.
(Oregon State Univ. Corvallis, OR, United States)
Ripple, W. J.
(Oregon State Univ. Corvallis, OR, United States)
Lewis, A. J.
(Oregon State Univ. Corvallis, OR, United States)
Date Acquired
August 13, 2013
Publication Date
August 15, 1986
Publication Information
Publication: JPL Proceedings of the Second Airborne Imaging Spectrometer Data Analysis Workshop
Subject Category
Earth Resources And Remote Sensing
Accession Number
87N12987
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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