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  • EARTH RESOURCES AND REMOTE SENSING  (4)
  • SPACECRAFT INSTRUMENTATION  (3)
  • 1
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    The transient gamma-ray spectrometer (1991)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The authors describe the Transient Gamma-Ray Spectrometer (TGRS) to be flown onboard the WIND spacecraft. This instrument is designed to detect cosmic gamma-ray bursts over the energy range of 20 keV to 10 MeV with an expected spectroscopic resolution of 2 keV at 1 MeV (E/Delta-E = 500). The active detection element is a 215-cu cm high-purity n-type Ge crystal cooled to cryogenic temperatures by a passive radiative cooler. The geometric field of view (FOV) defined by the cooler is 170 deg FWFM. Burst data are stored directly in an onboard 2.75-Mb burst memory with an absolute timing accuracy of +/-1.5 ms. This capacity is sufficient to store the entire spectral data set of all but the largest bursts. In addition to burst measurements, the instrument will also study solar flares, search for possible diffuse background lines, and monitor the 511-keV positron annihilation radiation from the galactic center. The experiment is scheduled to be launched on a Delta II launch vehicle from Cape Canaveral on December 31, 1992.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: IEEE Transactions on Nuclear Science (ISSN 0018-9499); 38; 559-567
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    LANDSAT data: A new perspective for geology. A review of the utilization of LANDSAT imagery for geological interpretation (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Areas in which LANDSAT satellite imagery were found most useful include regional interpretations of geological structure, updating verifying of geologic maps, mineral and petroleum exploration, and the monitoring of natural hazards such as large-scale erosion and seismicity. Investigations in these areas of application demonstrated the wide variety of uses presently undertaken or envisioned for the future.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. John F. Kennedy Space Center Remote Sensing and the Earth; p 194-204
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    NASA TECHNICAL REPORTS
  • 3
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    Remote sensing exploration for metallic mineral resources in central Baja California (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Remote sensor data (primarily LANDSAT) was analyzed by photogeologic and computer-assisted enhancement techniques to evaluate the metallic mineral potential of Baja California. Overlays were prepared at 1:1,000,000 and 1:500,000 and included known geologic relationships and mineral occurrences, lineament, drainage and structural patterns, tonal anomalies, and enhancement results. Computer-assisted enhancement and classification of the test sites was performed using the IMAGE 100 system to identify subtle tonal anomalies thought related to mineralization using known sites as analysis guides. Mineral potential maps of Baja California were generated from these analyses and the ten highest priority targets visited. Preliminary assay results (atomic absorption analysis) for the samples recovered showed moderate to high geochemical anomalies for Copper (10 of 12 samples), Zinc (3 of 12 samples) and Lead (4 of 12 samples).
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ERIM Proc. of the 11th Intern. Symp. on Remote Sensing of Environment, Vol. 1; p 683-691
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    NASA TECHNICAL REPORTS
  • 4
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    A flexible CAMAC based data system for Space Shuttle scientific instruments (1979)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: An effort has been made within NASA to produce a low-cost modular system for implementation of Shuttle payloads based on the CAMAC standards for packaging and data transfer. A key element of such a modular system is a means for controlling the data system, collecting and processing the data for transmission to the ground, and issuing commands to the instrument either from the ground or based on the data collected. A description is presented of such a means based on a network of digital processors and CAMAC crate controllers, which allows for the implementation of instruments ranging from those requiring only a single CAMAC crate of functional modules and no data processing to ones requiring multiple crates and multiple data processors.
    Keywords: SPACECRAFT INSTRUMENTATION
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    NASA TECHNICAL REPORTS
  • 5
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    Gulf offshore satellite applications project (GOSAP) (ERS-1 Pilot Project PP-USA-1) (1994)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Project GOSAP is a multi organizational effort to determine how best to use remote sensing technology, and ERS-1 data in particular, to address offshore problems and operations faced by the exploration and marine engineering industries, in the Gulf of Mexico. Remotely sensed data integrated with sea truth are used to quantify meteorologic and oceanographic events, to detect and track ocean currents and gyres, to image the sea floor, map subsurface geology, or detect oil seeps from orbital altitudes. Participants are evaluating the potential for satellite based offshore exploration, ocean engineering, and environmental applications using combined satellite and airborne measurements constrained by real time sea truth.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ESA, Proceedings of 1st Workshop on ERS-1 Pilot Projects; p 417-429
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    NASA TECHNICAL REPORTS
  • 6
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    Excerpts from selected LANDSAT 1 final reports in geology (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The standard formats for the summaries of selected LANDSAT geological data are presented as checklists. These include: (1) value of LANDSAT data to geology, (2) geologic benefits, (3) follow up studies, (4) cost benefits, (5) optimistic working scales, (6) statistical analysis, and (7) enhancement effects.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-TM-X-71119 , X-923-76-74
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Design and performance of the halogen occultation experiment (HALOE) remote sensor (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-07-27
    Description: HALOE is an optical remote sensor that measures extinction of solar radiation caused by the earth's atmosphere in eight channels, ranging in wavelength from 2.5 to 10.1 microns. These measurements, which occur twice each satellite orbit during solar occultation, are inverted to yield vertical distributions of middle atmosphere ozone (O3), water vapor, nitrogen dioxide, nitric oxide, hydrogen fluoride, hydrogen chloride, and methane. A channel located in the 2.7 region is used to infer the tangent point pressure by measuring carbon dioxide absorption. The HALOE instrument consists of a two-axis gimbal system, telescope, spectral discrimination optics and a 12-bit data system. The gimbal system tracks the solar radiometric centroid in the azimuthal plane and tracks the solar limb in the elevation plane, placing the instrument's instantaneous field-of-view 4 arcmin down from the solar top edge. The instrument gathers data for tangent altitudes ranging from 150 km to the earth's horizon. Prior to an orbital sunset and after an orbital sunrise, HALOE automatically performs calibration sequences to enhance data interpretation. The instrument is presently being tested at the NASA Langley Research Center in preparation for launch on the Upper Atmosphere Research Satellite near the end of this decade. This paper describes the instrumenmt design, operation, and functional performance.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Infrared technology XII; Aug. 19, 20, 1986; San Diego, CA; United States
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    NASA TECHNICAL REPORTS
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