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  • EARTH RESOURCES AND REMOTE SENSING  (12)
  • 1985-1989  (12)
  • 1
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    Image processing software for providing radiometric inputs to land surface climatology models (1989)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: During the First International Land Surface Climatology Project (ISLSCP) Field Experiment (FIFE), 80 gigabytes of image data were generated from a variety of satellite and airborne sensors in a multidisciplinary attempt to study energy and mass exchange between the land surface and the atmosphere. To make these data readily available to researchers with a range of image data handling experience and capabilities, unique image-processing software was designed to perform a variety of nonstandard image-processing manipulations and to derive a set of standard-format image products. The nonconventional features of the software include: (1) adding new layers of geographic coordinates, and solar and viewing conditions to existing data; (2) providing image polygon extraction and calibration of data to at-sensor radiances; and, (3) generating standard-format derived image products that can be easily incorporated into radiometric or climatology models. The derived image products consist of easily handled ASCII descriptor files, byte image data files, and additional per-pixel integer data files (e.g., geographic coordinates, and sun and viewing conditions). Details of the solutions to the image-processing problems, the conventions adopted for handling a variety of satellite and aircraft image data, and the applicability of the output products to quantitative modeling are presented. They should be of general interest to future experiment and data-handling design considerations.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
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  • 2
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    Terrestrial imaging spectroscopy (1988)
    In:  Other Sources
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    Publication Date: 2011-08-19
    Description: Recent advances in imaging spectroscopy for remote sensing applications are discussed, reviewing the results of recent investigations. The advantages offered by the higher spectral resolution of imaging spectroscopy relative to scanners such as Landsat MSS and TM are explained; the design and performance of the Airborne Imaging Spectrometer (Vane et al., 1984) are described and illustrated with drawings, photographs, and sample images; data processing and analysis techniques are outlined; and applications to geological and botanical research are considered.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Remote Sensing of Environment (ISSN 0034-4257); 24; 1-29
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  • 3
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    Landscape pattern and successional dynamics in the boreal forest (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The landscape-scale community dynamics of a boreal forest ecosystem was investigated using the Landsat MSS data record form 1973 to 1983 to generate a stochastic description of the key life cycle states of the community landscape elements. Such descriptions can provide input and verification for models of community development and landscape dynamics. It is anticipated that the proposed approach may be extended to measure, monitor, and model ecosystems at continental and planetary scales.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
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  • 4
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    The high resolution imaging spectrometer (HIRIS) for EOS (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The HIRIS is designed to acquire images in 196 spectral bands simultaneously in the 0.4-2.5 micron wavelength region. HIRIS is a targeting rather than a continuous acquisition instrument and obtains high spatial and spectral resolution images in a 23 km swath with a 30 m GIFOV in vertical viewing. Gimbal pointing is proposed which will allow image acquisition at -30 + 60 deg down-track and + or - 25 deg cross-track. The raw data rate of the instrument is 393 Mbs. The high spectral resolution will make it possible to directly identify surficial materials such as rocks, soils, and suspended matter in water, and HIRIS opens up the possibility of studying biogeochemical processes in vegetation canopies. HIRIS will be used in conjunction with MODIS as a multistage sampling system.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
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  • 5
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    Optical remote sensing of the earth (1985)
    In:  Other Sources
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    Publication Date: 2011-08-19
    Description: In the present assessment of the contributions of optical earth resources remote sensing in the 0.4-15.0 micron region, attention is given to underlying principles, applications to scientific disciplines such as geology, hydrology and oceanography, the recent development history of the requisite sensors, and sensor development trends. Development status characterizations are given for thematic mapping, modular optoelectronic multispectral scanning, the telescope/CCD 'SPOT' program of France, the thermal IR multispectral scanner for mineral signature identification, airborne imaging spectrometry, and the Advanced Visible and IR Imaging Spectrometer that is nearing deployment. Technology development trends and the capabilities they portend are projected.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: IEEE, Proceedings (ISSN 0018-9219); 73; 950-969
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  • 6
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    Imaging spectrometry for earth remote sensing (1985)
    In:  Other Sources
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    Publication Date: 2011-08-19
    Description: Initial results of the novel remote earth sensing technique of imaging spectrometry, which is technically feasible from both spacecraft and aircraft platforms, indicate that the direct identification of surface materials on a picture-element basis is possible through proper sampling of absorption features in the reflectance spectrum. Sensors of this type are able to acquire images simultaneously in 100-200 contiguous spectral bands. Computerized data reduction and storage techniques are available for the large data sets thus generated, and novel analytic techniques are under development to maximize information content extraction.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Science (ISSN 0036-8075); 228; 1147-115
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  • 7
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    Imaging spectrometry: Past, present, future (1985)
    In:  Other Sources
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    Publication Date: 2011-08-19
    Description: Imaging spectrometry for the remote sensing of the Earth from aircraft and satellites is discussed. Results with an aircraft instrument show that remote, direct identification of surface materials is possible. The airborne and spaceborne sensors can acquire images in 100 to 200 spectral bands. The next generation aircraft scanner (AVIRIS) is expected to be operational in 1987. Plans are underway for a Shuttle instrument (SISEX) to fly in 1991.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ESA Proceedings of the Third International Colloquium on Spectral Signatures of Objects in Remote Sensing; p 215-218
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  • 8
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    Ten year change in forest succession and composition measured by remote sensing (1987)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Vegetation dynamics and changes in ecological patterns were measured by remote sensing over a 10 year period (1973 to 1983) for 148,406 landscape elements, covering more than 500 sq km in a protected forested wilderness. Quantitative measurements were made possible by methods to detect ecologically meaningful landscape units; these allowed measurement of ecological transition frequencies and calculation of expected recurrence times. Measured ecological transition frequencies reveal boreal forest wilderness as spatially heterogeneous and highly dynamic, with one-sixth of the area in clearings and early successional stages, consistent with recent postulates about the spatial and temporal patterns of natural ecosystems. Differences between managed forest areas and a protected wilderness allow assessment of different management regimes.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-TM-89725 , NAS 1.26:180948
    Format: application/pdf
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  • 9
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    Proceedings of the Second Airborne Imaging Spectrometer Data Analysis Workshop (1986)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Topics addressed include: calibration, the atmosphere, data problems and techniques, geological research, and botanical and geobotanical research.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-CR-179924 , JPL-PUB-86-35 , NAS 1.26:179924
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  • 10
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    Atmospheric correction of NS-001 data and extraction of multiple angle reflectance data sets (1987)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The percentage of incident solar flux reflected by a surface is a quantity of considerable interest in remote sensing studies. To calculate reflectance from remotely sensed radiance data some estimate of incident flux is needed. Since simultaneous ground-based radiometric measurements are often not available for observations by aircraft or satellite sensors, a procedure based on modeling atmospheric transmittance and scattering was developed. The primary application is to an aircraft data set collected with the NASA C-130 over the Superior National Forest, Minnesota. Atmospherically corrected multiple angle reflectance data sets and reflectance images are generated for areas of natural forest vegetation. These data and the technique may be useful for studies of the interactions of light with forested canopies.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: International Symposium on Remote Sensing of Environment; Oct 26, 1987 - Oct 30, 1987; Ann Arbor, MI; United States
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