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Trend data of all the key performance parameters are included and discussed separately for each of the two multispectral scanner instruments. Test history and acceptance test algorithms are discussed. Emphasis is placed on the acceptance test phase of the program.
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The development and acceptance testing of the 4-band Multispectral Scanners to be flown on LANDSAT D and LANDSAT D Earth resources satellites are summarized. The choice of wavelength of the illumination and the wavelength of the fluorescence to be monitored depends on the specific GFP. In a gene-transfer- monitoring application, the plants are illuminated with blue or ultraviolet light and the scanner is used to capture fluorescence images from a green fluorescent protein (GFP) that is expressed as result of the gene transfer. In a health-monitoring application, the plants are illuminated with full-spectrum visible and near infrared light and the scanner is used to acquire a reflected-light spectral signature known to be indicative of the health of the plants. Multispectral Scanner for Monitoring PlantsĪ multispectral scanner has been adapted to capture spectral images of living plants under various types of illumination for purposes of monitoring the health of, or monitoring the transfer of genes into, the plants. The short wavelength beam is dispersed by a pair of prisms, then projected on an array of detectors also mounted in a cryogenic environment and oriented at an angle relative to the optical path of the dispersed short wavelength beam. The long wavelength beam is filtered and focused on an infrared detector positioned in a cryogenic environment. The collimated beam is split by a dichroic filter which transmits radiant energy in the infrared spectrum and reflects visible and near infrared energy. Electromagnetic radiation reflected by a rotating scan mirror is focused by a concave primary telescope mirror and collimated by a second concave mirror. The results indicated that computer analysis of multispectral data can be very accurate in classifying and estimating the natural and man-made materials that characterize land uses in an urban scene.Īn optical system for use in a multispectral scanner of the type used in video imaging devices is disclosed. The data were collected in twelve wavelength bands from 0.40 to 1.00 micrometers by the scanner. Multispectral scanner data were collected over the subdivision on from an altitude of 915 meters. A small subdivision near Lafayette, Indiana was selected as the test site for the urban land use study.
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E.Īn airborne multispectral scanner was used to collect the visible and reflective infrared data. Land use classification utilizing remote multispectral scanner data and computer analysis techniques A description of this scanner is provided as well as a discussion of data acquisition and reduction. Operating in the atmospheric window region (8 to 12 micrometers) with a channel sensitivity of approximately 0.1 C, TIMS may be used whenever an accurate measure of the Earth's surface is needed.
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The Thermal Infrared Multispectral Scanner (TIMS) is a NASA aircraft scanner providing six channel spectral capability in the thermal infrared region of the electromagnetic spectrum. Thermal Infrared Multispectral Scanner (TIMS): An investigator's guide to TIMS data