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  • EARTH RESOURCES AND REMOTE SENSING  (13)
  • MECHANICS  (6)
  • OCEANOGRAPHY  (6)
  • 1980-1984  (21)
  • 1965-1969  (4)
  • 1
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    Some characteristics and advantages of LANDSAT 3 return beam vidicon images (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: One advantage of a LANDSAT 3 return beam vidicon (RBV) scene is the synoptic view it provides. A 1:500,000 paper print of the size 19.4 cm x 19.4 cm encompasses an area of about 3,721 square miles (9,637 sq. km.) and this compares very favorably in coverage to small scale aerial photography. A second important advantage is that the ground resolution is 38 by 38 meters. Compared to the resolution of the MSS which is 79 by 79 meters the RBV provides a wealth of detail useful for many purposes. A great variety of man made structures are visible including bridges, roads, docks, and small airfields. Agricultural field patterns are clear and settlements of various sizes can be identified and delineated. A third advantage is related to the approximate panchromatic spectral response displayed in RBV images. Since many aerial photographic interpreters are accustomed to working with panchromatic photographs, they should have no difficulty understanding and putting RBV images immediately into use.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Purdue Univ. CORSE-81: The 1981 Conf. on Remote Sensing Educ.; p 84-85
    Format: text
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  • 2
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    Rapid evolution of a Gulf Stream warm-core ring (1984)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Satellite images are used to show that major alterations in the structure of Gulf Stream warm-core rings can occur during very short periods of two to five days when an interaction with the Gulf Stream is particularly intense. The role of these interactions in the evolution of a ring are discussed.
    Keywords: OCEANOGRAPHY
    Type: Nature (ISSN 0028-0836); 308; 837-840
    Format: text
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  • 3
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    Relationships between mineralization and silicic volcanism in the Central Andes (1983)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Journal of Volcanology and Geothermal Research (ISSN 0377-0273); 18; 165-190
    Format: text
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  • 4
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    Bidirectional torque filter eliminates backlash (1965)
    In:  CASI
    Details
    Publication Date: 2019-05-23
    Description: Two elastic springs connecting a hub and two spur gears absorb bidirectional step torque differentials and provide antibacklash characteristics between input and output shafts. This device is used in precise control systems.
    Keywords: MECHANICS
    Type: GSC-335
    Format: application/pdf
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  • 5
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    The analysis of ocean optical data (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: A new oceanographic instrument to measure underwater optical, biological and physical properties simultaneously has been built and used extensively at sea. The Bio-Optical Profiling System (BOPS) was designed for the rapid acquisition of data to accommodate shipboard 'synoptic' sampling strategies, often in conjunction with concurrent aircraft and satellite sensors. The data rates and associated quantity of data from the BOPS are some orders of magnitude larger than those traditionally encountered in optical oceanography. The rapid acquisition of optical data in a wide range of environmental conditions requires new methodologies in ocean optical data analysis.
    Keywords: OCEANOGRAPHY
    Format: text
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  • 6
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    The Use of Thematic Mapper Data for Land Cover Discrimination: Preliminary Results from the UK Satmap Programme (1984)
    In:  CASI
    Details
    Publication Date: 2014-09-13
    Description: In assessing the accuracy of classification techniques for Thematic Mapper data the consistency of the detector-to-detector response is critical. Preliminary studies were undertaken, therefore, to assess the significance of this factor for the TM. The overall structure of the band relationships can be examined by principal component analysis. In order to examine the utility of the Thematic Mapper data more carefully, six different land cover classes approximately Anderson level 1 were selected. These included an area of water from the sediment-laden Mississippi, woodland, agricultural land and urban land. A plume class was also selected which includes the plume of smoke emanating from the power station and drifting over the Mississippi river.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Goddard Space Flight Center LANDSAT-4 Sci. Invest. Summ., Including Dec. 1983 Workshop Results, Vol. 2; p 149-152
    Format: text
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  • 7
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    Combustion chamber inlet manifold separates vapor from liquid (1966)
    In:  CASI
    Details
    Publication Date: 2019-05-29
    Description: Circular manifold with tangential orifices at the inner circumference provides for the vapor constituent of a vaporized cryogenic propellant to enter a rocket combustion chamber before the liquid constituent. The vapor is separated from the liquid by centrifugal action and precedes it into the chamber through carefully positioned orifices.
    Keywords: MECHANICS
    Type: MFS-531
    Format: application/pdf
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  • 8
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    Stationary device produces homogeneous mixture of fluids (1966)
    In:  CASI
    Details
    Publication Date: 2019-05-29
    Description: Stationary device produces a homogeneous mixture of two or more one-phase or two-phase fluids. The device contains two concentric flow guides with helical passageways through which the fluids are forced into turbulent flow by the system pressure differential.
    Keywords: MECHANICS
    Type: MFS-525
    Format: application/pdf
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  • 9
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    The use of thematic mapper data for land cover discrimination: Preliminary results from the UK SATMaP programme (1983)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The principal objectives of the UK SATMaP program are to determine thematic mapper (TM) performance with particular reference to spatial resolution properties and geometric characteristics of the data. So far, analysis is restricted to images from the U.S. and concentrates on spectra and radiometric properties. The results indicate that the data are inherently three dimensional compared with the two dimensional character of MSS data. Preliminary classification results indicate the importance of the near infrared band (TM 4), at least one middle infrared band (TM 5 or TM 6) and at least one of the visible bands (preferably either TM 3 or TM 1). The thermal infrared also appears to have discriminatory ability despite its coarser spatial resolution. For band 4 the forward and reverse scans show somewhat different spectral responses in one scene but this effect is absent in the other analyzed. From examination of the histograms it would appear that the full 8-bit quantization is not being effectively utilized for all the bands.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E84-10038 , NASA-CR-174590 , NAS 1.26:174590
    Format: application/pdf
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  • 10
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    The United Kingdom SATMaP program (1983)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Data from test tapes from the United States (specifically the August Arkansas scene) and the first tape of the UK test site which came from ESRIN are analyzed. Methods for estimating spatial resolution are discussed and some preliminary results are included. The characteristics of the ESRIN data are examined and the utility of the various spectral bands of the thematic mapper for land cover mapping are outlined.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E84-10002 , NASA-CR-174517 , NAS 1.26:174517
    Format: application/pdf
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