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  • Weitere Quellen  (4)
  • GEOSCIENCES (GENERAL)  (2)
  • SPACECRAFT INSTRUMENTATION  (2)
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  • 1
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    Landsat-4 sensor performance (1984)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-18
    Beschreibung: Preflight and in-orbit sensor and data measurements indicate that TM meets or exceeds most specifications. Measured spectral band edges meet instrument specifications in 12 out of 14 cases; there is ample dynamic range. The signal-to-noise ratio exceeds specifications, except for band 3, channel 4; and band 7 channel 7 is very noisy but still meets specifications. The modulation transfer function of channel 4, band 2, is smaller than specified. Registration errors between the primary focal plane (PFP) and the cold focal plane (CFP) are about 0.75 pixels along-scan and 0.2 pixels across scan. Forward and reverse scan discontinuities are well within ground-processing capabilities to rectify. Instrument gain variability, up to 7 percent for band 5, requires use of the internal calibration (IC) system to assure radiometric accuracy. Preliminary applications evaluation of image contents indicates that TM provides much better definition of edges than MSS.
    Schlagwort(e): SPACECRAFT INSTRUMENTATION
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 2
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    Spectral characterization of the Landsat Thematic Mapper sensors (1985)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-19
    Beschreibung: Relative spectral response data for the Landsat-4 and Landsat-4 backup multispectral scanner subsystems (MSS), the protoflight and flight models, are presented and compared to similar data for the Landsat 1, 2 and 3 scanners. Channel (six channels per band) outputs for soil and soybean targets were simulated and compared within each band and between scanners.The principal differences between the spectral responses of the Landsat-4 scanners and previous scanners are discussed. The simulated Landsat-4 scanner outputs were 3 to 10 percent lower in the red band and 3 to 11 percent higher in the first near-IR band than previous scanners for the soybeans targets. The Landsat-4 scanners were generally more uniform from channel to channel within bands than previous scanners. In the upper-band edge of the red band of the protoflight scanner, one channel was markedly different (12 nm) from the rest. For a soybeans target, this nonuniformity resulted in a within-band difference of 6.2 percent in simulated outputs between channels.
    Schlagwort(e): SPACECRAFT INSTRUMENTATION
    Materialart: International Journal of Remote Sensing (ISSN 0143-1161); 6; 697-716
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 3
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    LANDSAT-4 Science Investigations Summary, Including December 1983 Workshop Results (1984)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: A series of brief summaries of the results of individual investigations of LANDSAT 4 image data characteristics are presented. Topics are divided into MSS and TM investigations, and applications of the imaging techniques. Radiometric and geometric accuracy are emphasized.
    Schlagwort(e): GEOSCIENCES (GENERAL)
    Materialart: E84-10167 , NASA-CP-2326-VOL-2 , NAS 1.55:2326-VOL-2 , LANDSAT-4 Early Results Symposium; Feb 22, 1983 - Feb 24, 1983; Greenbelt, MD; United States
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 4
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    LANDSAT-4 Science Investigations Summary, Including December 1983 Workshop Results, Volume 1 (1984)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: A general overview of the LANDSAT 4 system with emphasis on the Thematic Mapper (TM) is presented. A variety of topics on the design, calibration, capabilities, and image processing techniques of the TM sensor are discussed in detail. The comparison of TM data with other MSS data is also investigated.
    Schlagwort(e): GEOSCIENCES (GENERAL)
    Materialart: E84-10166 , NASA-CP-2326-VOL-1 , NAS 1.55:2326-VOL-1 , LANDSAT Sci. Characterization Workshop; Dec 06, 1983|Proc. of LANDSAT-4 Early Results Symp.; Feb 22, 1983 - Feb 24, 1983; Greenbelt, MD; United States
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
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