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  • Weitere Quellen  (365)
  • EARTH RESOURCES AND REMOTE SENSING  (148)
  • AERODYNAMICS  (125)
  • METEOROLOGY AND CLIMATOLOGY  (92)
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  • 1983  (365)
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  • 1985-1989
  • 1980-1984  (365)
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  • 1
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    A translational registration system for LANDSAT image segments (1983)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The use of satellite images obtained from various dates is essential for crop forecast systems. In order to make possible a multitemporal analysis, it is necessary that images belonging to each acquisition have pixel-wise correspondence. A system developed to obtain, register and record image segments from LANDSAT images in computer compatible tapes is described. The translational registration of the segments is performed by correlating image edges in different acquisitions. The system was constructed for the Burroughs B6800 computer in ALGOL language.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: E83-10373 , NASA-CR-172917 , NAS 1.26:172917 , INPE-2785-PRE/351 , Encontro Nacl. de Automatica Soc. Brasil. de Mat.; Jul 06, 1983 - Jul 13, 1983; Belem, Para
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Results of the Australian geodetic VLBI experiment (1983)
    In:  CASI
    Details
    Publikationsdatum: 2016-06-07
    Beschreibung: The 250-2500 km baseline vectors between radio telescopes located at Tidbinbilla (DSS43) near Canberra, Parkes, Fleurs (X3) near Sydney, Hobart and Alice Springs were determined from radio interferometric observations of extragalactic sources. The observations were made during two 24-hour sessions on 26 April and 3 May 1982, and one 12-hour night-time session on 28 April 1982. The 275 km Tidbinbilla - Parkes baseline was measured with an accuracy of plus or minus 6 cm. The remaining baselines were measured with accuracies ranging from 15 cm to 6 m. The higher accuracies were achieved for the better instrumented sites of Tidbinbilla, Parkes and Fleurs. The data reduction technique and results of the experiment are discussed.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: The Telecommun. and Data Acquisition Rept.; p 140-146
    Format: application/pdf
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  • 3
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    Advanced technology exhaust nozzle development (1983)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: The requirement for greater tactical aircraft operational capabilities has led to increasing research emphasis on the refinement of engine/airframe integration methods and exhaust nozzle flexibility. A major prospective advancement in the development of these capabilities takes the form of multifunctional exhaust nozzle systems with thrust reversal and thrust vectoring features, whose operation will be shared by both airframe and powerplant control systems. Attention is presently given to the two-dimensional convergent-divergent and single expansion ramp nozzle designs, with emphasis on the variable geometry mechanical systems by which they assume cruising flight, vectoring, and thrust reversal operations. The nozzles have been wind tunnel model-tested for the cases of the F-18 fighter and a supersonic cruise configuration concept.
    Schlagwort(e): AERODYNAMICS
    Materialart: AIAA PAPER 83-1286
    Format: text
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  • 4
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    Mapping land use changes in the carboniferous region of Santa Catarina, report 2 (1983)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: The techniques applied to MSS-LANDSAT data in the land-use mapping of Criciuma region (Santa Catarina state, Brazil) are presented along with the results of a classification accuracy estimate tested on the resulting map. The MSS-LANDSAT data digital processing involves noise suppression, features selection and a hybrid classifier. The accuracy test is made through comparisons with aerial photographs of sampled points. The utilization of digital processing to map the classes agricultural lands, forest lands and urban areas is recommended, while the coal refuse areas should be mapped visually.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: E85-10017 , NASA-CR-168574 , NAS 1.26:168574 , INPE-2945-RPE/447
    Format: application/pdf
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  • 5
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    User's guide for the Solar Backscattered Ultraviolet (SBUV) and the Total Ozone Mapping Spectrometer (TOMS) RUT-S and RUT-T data sets: October 31, 1978 to November 1, 1980 (1983)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: Raw data from the Solar Backscattered Ultrviolet/Total Ozone Mapping Spectrometer (SBUV/TOMS) Nimbus 7 operation are available on computer tape. These data are contained on two separate sets of RUTs (Raw Units Tapes) for SBUV and TOMS, labelled RUT-S and RUT-T respectively. The RUT-S and RUT-T tapes contain uncalibrated radiance and irradiance data, housekeeping data, wavelength and electronic calibration data, instrument field-of-view location and solar ephemeris information. These tapes also contain colocated cloud, terrain pressure and snow/ice thickness data, each derived from an independent source. The "RUT User's Guide" describes the SBUV and TOMS experiments, the instrument calibration and performance, operating schedules, and data coverage, and provides an assessment of RUT-S and -T data quality. It also provides detailed information on the data available on the computer tapes.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: NASA-RP-1112 , REPT-910 , NAS 1.61:1112
    Format: application/pdf
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  • 6
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    Mapping project on land use changes in the carboniferous region of Santa Catarina (1983)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: The utilization of remote sensing data for monitoring land use changes by means of digital image analysis is described. The following data were utilized: LANDSAT data from September 4, 1975, April 24, 1978, and September 8, 1981; LANDSAT paper photography data; area IV color photographs; IBGE topography maps, and auxiliary data about the Brazilian state of Santa Catarina. Three kinds of analyses of digital images were carried out. The project identified and mapped major classes of land use areas including urban areas, coal deposits, agricultural areas, forests, lakes, and flood plains. Five areas directly affected by coal exploration southeast of Santa Catarina are identified and described. In addition, the classification system used for organizing data about land cover in a hierarchical arrangement is presented. The project made use of two remote sensing data sources: data of MSS spectral (Mulitspectral Scanner System)/LANDSAT on a scale of 1:100,000 with approximately 80 m resolution, and infrared color aerial photographs on a scale of 1:45,000 with approximately 5 m resolution. Therefore, the classification system included three levels, two selected to be compatible with aerial photography data and the third to conform to the resolution of MSS/LANDSAT.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: NASA-CR-173946 , NAS 1.26:173946 , INPE-2874-NTE/204
    Format: application/pdf
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  • 7
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    Landsat 4 results and their implications for agricultural surveys (1983)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: Progress on defining the minimum Landsat-4 data characteristics needed for agricultural information in the U.S. and assessing the value-added capability of current technology to extract that level of information is reported. Emphasis is laid on the thematic mapper (TM) data and the ground processing facilities. TM data from all 7 bands for a rural Arkansas scene were examined in terms of radiometric, spatial, and geometric fidelity characteristics. Another scene sensed over Iowa was analyzed using three two-channel data sets. Although the TM data were an improvement over MSS data, no value differential was perceived. However, the development of further analysis techniques is still necessary to determine the actual worth of the improved sensor capabilities available with the TM, which actually has an MSS within itself.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: AAS PAPER 83-160
    Format: text
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  • 8
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    Satellite data relay and platform locating in oceanography. Report of the In Situ Ocean Science Working Group (1983)
    In:  CASI
    Details
    Publikationsdatum: 2019-08-27
    Beschreibung: The present and future use of satellites to locate offshore platforms and relay data from in situ sensors to shore was examined. A system of the ARGOS type will satisfy the increasing demand for oceanographic information through data relay and platform location. The improved ship navigation provided by the Global Positioning System (GPS) will allow direct observation of currents from underway ships. Ocean systems are described and demand estimates on satellite systems are determined. The capabilities of the ARGOS system is assessed, including anticipated demand in the next decade.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: NASA-TM-85443 , NAS 1.15:85443
    Format: application/pdf
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  • 9
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    Stability of shock waves attached to wedges and cones (1983)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-18
    Beschreibung: Previously cited in issue 06, p. 799, Accession no. A82-17876
    Schlagwort(e): AERODYNAMICS
    Materialart: AIAA Journal (ISSN 0001-1452); 21; 1611-161
    Format: text
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  • 10
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    NASA technology transfer in the southwest states - Arizona, Colorado, Nevada and Utah (1983)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-18
    Beschreibung: Features of the NASA Regional Application Program for providing state and local land management agencies an opportunity to assess the usefulness of emerging remote sensing technology are described. The Program guidelines necessitated configuring software for local facilities, assuring that the aggncy involved furnished manpower, and applying the technology to local needs. The study focused on the southwestern U.S., particularly for purposes of water management, federal/state ownership/policy, energy development, environmental impact issues, timber and range inventory, fire control, and urban expansion. Demonstration projects were conducted in various topics, according to the state surveyed, with the success of the projects determined by the willingness of the agencies to continue with the technology, which happened in several cases.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Format: text
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