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  • INSTRUMENTATION AND PHOTOGRAPHY  (518)
  • 1970-1974  (518)
  • 1
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    Apollo 17 laser altimeter (1973)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: The performance and operation of the Apollo 17 laser altimeter after several modifications are discussed. Functions of the instrument include precise altitude measurement of the CSM above the lunar surface, and measurement of broad scale topographic relief around the entire circumference of the moon.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Apollo 17 Prelim. Sci. Rept.; 4 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    A simple, low power, multiple pulse NMR spectrometer. (1972)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Review of Scientific Instruments; 43; Sept
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Simultaneous Raman and laser velocimeter measurements (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The feasibility of performing Raman and laser velocimeter measurements simultaneously is demonstrated, and it is shown that the background radiation associated with the Mie scattering and large particulate concentrations does not saturate or distort the relatively weak rotational Raman signals. Under stringent conditions of low static gas densities and large particulate concentrations, Raman density and temperature measurements agree to within plus or minus 5% of the calculated values.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: AIAA Journal; 12; Oct. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    A remote operation quadrupole mass spectrometer using a custom radio-frequency link approach (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: A commercial quadrupole mass spectrometer (residual gas analyzer, RGA) system has been modified to operate at large separations of its electronics console and sensing head. The methods implemented have made practical applications, as well as operation, of such a system possible for the first time. This advance was stimulated by a need for placing sensors at remote (45 or 60 m) chamber locations for space simulation testing of orbital flight spacecraft. Emphasis is placed on instrument functional requirements and describing the hardware changes and adjustment techniques necessary to assure operation at the extended cable lengths.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Applied Spectroscopy; 28; Mar
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    A survey of mass analyzers (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: With the increasing applications of mass spectrometry technology to diverse services areas, a need has developed for a consolidated survey of the essential characteristics and features of the various instruments and techniques. This report is one approach to satisfying this need. Information has been collected and consolidated into a format which includes for each approach: (1) a general technique description, (2) instrument features information, and (3) a summary of pertinent advantages and disadvantages. With this information, the potential mass spectrometer user should be able to more efficiently select the most appropriate instrument.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TM-X-64792
    Format: application/pdf
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  • 6
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    An S-band radiometer design with high absolute precision (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: A radiometer for the remote measurement of sea surface temperature is described. The development of an instrument capable not only of high relative accuracy (i.e., resolution) but also of high absolute precision is considered. The concepts underlying the design of an instrument capable of an absolute accuracy of a few tenths degrees Kelvin in the measurement of brightness temperature at S band are described. The role of the antenna is discussed, and the importance of high ohmic and beam efficiencies is stressed. The hardware itself is fully described, along with an outline concerning the design of a unique cryogenically cooled termination used to calibrate the whole radiometer, including antenna. Finally, some test results are presented that show that the design goals for the instrument have been closely approached.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: IEEE Transactions on Microwave Theory and Techniques; MTT-22; Apr. 197
    Format: text
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  • 7
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    Properties of an ionization spectrometer exposed to 10, 20.5, and 28 GeV/c machine accelerated protons (1970)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Properties of ionization spectrometer exposed to 10, 20.5, and 28 GeV/c synchrotron accelerated protons
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-CR-110792 , REPT-140
    Format: application/pdf
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  • 8
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    Investigation of microwave hologram techniques for application to earth resources (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: An investigation of microwave hologram techniques for application to earth resources was conducted during the period from June 1971 to November 1972. The objective of this investigation has been to verify the feasibility of an orbital microwave holographic radar experiment. The primary advantage of microwave hologram radar (MHR) over the side-looking airborne radar (SLAR) is that of aspect or viewing angle; the MHR has a viewing angle identical with that of photography and IR systems. The combination of these systems can thus extend the multispectral analysis concept to span optical through microwave wavelengths. Another advantage is the capacity of the MHR system to generate range contours by operating in a two-frequency mode. It should be clear that along-track resolution of an MHR can be comparable with SLAR systems, but cross-track resolution will be approximately an order of magnitude coarser than the range resolution achievable with an arbitrary SLAR system. An advantage of the MHR over the SLAR is that less average transmitter power is required. This reduction in power results from the much larger receiving apertures associated with MHR systems.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: International Symposium on Remote Sensing of Environment; Apr 15, 1974 - Apr 19, 1974; Ann Arbor, MI
    Format: text
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  • 9
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    A modified quadrupole mass spectrometer with custom RF link rods driver for remote operation (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A commercial quadrupole residual gas analyzer system has been upgraded for operation at extended cable lengths. Operation inside a vacuum chamber for the standard quadrupole nude head is limited to approximately 2 m from its externally located rf/dc generator because of the detuning of the rf oscillator circuits by the coaxial cable reactance. The advance of long distance remote operation inside a vacuum chamber for distances of 45 and 60 m was made possible without altering the quadrupole's rf/dc generator circuit by employing an rf link to drive the quadrupole rods. Applications of the system have been accomplished for in situ space simulation thermal/vacuum testing of sophisticated payloads.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-TM-X-64775
    Format: application/pdf
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  • 10
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    Water analysis by a combination neutron experiment (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Surface and subsurface water analysis on moon and planets by combination neutron experiment using epithermal die-away measurements of hydrogen
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: GEOLOGICAL PROBLEMS IN LUNAR AND PLANETARY RESEARCH.; P. 185-210.
    Format: text
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