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  • Other Sources  (3)
  • SPACECRAFT INSTRUMENTATION  (3)
  • 2000-2004
  • 1975-1979  (3)
  • 1
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    Rocket calibration of the Nimbus 6 solar constant measurements (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: A sounding rocket experiment was performed in June 1976, in which the solar constant was observed simultaneously outside the earth's atmosphere by three types of absolute cavity radiometers (the Primary Absolute Cavity Radiometer and two Active Cavity Radiometers, Type IV) and duplicates of Nimbus 6 ERB/ESP (Earth Radiation Budget/Eclectic Satellite Pyrheliometer) solar channels. The preliminary average solar constant result from the cavity radiometers is 1367 W/sq m with an uncertainty of less than plus or minus 0.5% in SI units. The duplicate ERB channel 3 on the rocket gave a value of 1389 W/sq m, which agreed exactly with the Nimbus 6 ERB channel 3 measurement made simultaneously with the rocket flight.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Applied Optics; 16; Oct. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Photon position determination using microchannel plates (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The reasons for developing an X-ray photon position detector and a description of the system and its laboratory performance have been presented by Kubierschky et al. (1977) and by Kellogg et al. (1976). The reported investigation is concerned with an expansion of the design criteria for the analog function and their implementation in available hardware. A charge event is received by the preamplifier of each axis, grouped and processed by the summing amplifiers, verified by the pulse height analyzer, sorted by the charge center detector, stored by sample/holds, and converted by the multiplying analog to digital converter. The various components are discussed.
    Keywords: SPACECRAFT INSTRUMENTATION
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Rocket calibration of the Nimbus 6 solar constant measurements (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Total solar irradiance was observed simultaneously outside the earth's atmosphere by three types of absolute cavity radiometers and duplicates of four of the Nimbus 6 Earth Radiation Budget (ERB) solar channels in a June 1976 sounding rocket experiment. The preliminary average solar constant result from the cavity radiometers is 1367 Wm (-2) with an uncertainty of less than + or - 0.5% in S.I. units. The duplicate ERB channel 3 on the rocket gave a value of 1389 Wm (-2) which agreed exactly with the Nimbus 6 ERB channel 3 measurement made simultaneously with the rocket flight.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: NASA-TM-X-71305 , X-942-77-66
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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