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  • 1
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    A rotating tomographic imager for solar extreme-ultraviolet/soft X-ray emission (1992)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-24
    Beschreibung: A concept is presented for a high-resolution EUV/soft-X-ray imager that has much in common with the medical imaging procedure of tomography. The resulting instrument is compatible with a simpler, less costly spin-axis-stabilized spacecraft. To demonstrate the fidelity of the reconstruction procedure, the observation and reconstruction is simulated to compare the results with the original image.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X); 389; L91-L93
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 2
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    LWIR scene simulator developed for end-to-end performance evaluation of focal planes (1992)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-24
    Beschreibung: The development of a long-wave infrared optical simulator facilitates evaluation of the end-to-end performance of long wavelength infrared (LWIR) focal plane arrays (FPAs) in a system-like environment. This simulator provides selectable structured scene inputs to a focal plane module or array. Background irradiances as low as 10 exp 10 photons/sq cm s are achievable when the simulator is cooled with liquid helium. The optical simulator can generate single or multiple targets of controllable intensities, and uniform or structured background irradiances. The infrared scenes can be viewed in a stationary mode or dynamically scanned across the focal plane.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: In: Test and evaluation of IR detectors and arrays II; Proceedings of the Meeting, Orlando, FL, Apr. 22, 23, 1992 (A94-12744 02-35); p. 176-187.
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 3
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    Data compression applied to HHVT (1990)
    In:  CASI
    Details
    Publikationsdatum: 2013-08-31
    Beschreibung: A task order was written by the High Resolution, High Frame Rate Video Technology (HHVT) project engineers to study data compression techniques that could be applied to the HHVT system. Specifically, the goals of the HHVT data compression study are to accomplish the following: (1) Determine the downlink capabilities of the Space Shuttle and Space Station Freedom to support HHVT data (i.e., determine the maximum data rates and link availability); (2) Determine current and projected capabilities of high speed storage media to support HHVT data by determining their maximum data acquisition/transmission rates and volumes; (3) Identify which experiment in the HHVT Users' Requirement data base need data compression, based on the experiments' imaging requirements; (4) Select the best data compression technique for each of these users by identifying a technique that provides compression but minimizes distortion; and (5) Investigate state-of-the-art technologies for possible implementation of selected data compression techniques. Data compression will be needed because of the high data rates and larger volumes of data that will result from the use of digitized video onboard the Space Shuttle and Space Station Freedom.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA, Lewis Research Center, High Resolution, High Frame Rate Video Technology; p 27-36
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 4
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    Technical challenges involved in supporting the Lambda Point Experiment (1990)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-19
    Beschreibung: The Lambda Point Experiment (LPE) is one of the instruments included in the U.S. Microgravity Payload Mission 1 planned for one of the Space Shuttle flights in 1992. The objective of the experiment is to measure the heat capacity of liquid helium within a narrow interval around the transition between superfluid and normal helium (the lambda point) with an unprecedented temperature resolution of about 10 to the -10th. Multiple technical challenges are presented in the areas of structural support, safety analysis, and modal frequency tests. This paper describes the technical challenges of JPL's multidisciplinary involvement in support of these experiments in microgravity.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Cryogenics, Supplement (ISSN 0011-2275); 30; 486-498
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 5
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    Laser Transmitter Module (LTM) for LITE (1992)
    In:  CASI
    Details
    Publikationsdatum: 2014-09-24
    Beschreibung: In Dec. 1991 TITAN SPECTRON successfully completed its six year effort to design, build, space qualify, test, and deliver the Laser Transmitter Module (LTM) for NASA LaRC's LITE program. The delivered LTM is a three color Q-switched flashlamp pumped Nd:YAG laser that is described as the first true world-class lidar in space. The preliminary design and verification tests results were first presented at the 14th International Laser Radar Conference (ILRC) in 1988. This paper describes not only the delivered product but also the verification and space qualification processes that resulted in the world's first space qualified high powered laser system for environmental exploration from space. Video of the laser operating in a Class 100 clean room and subsystems undergoing 10 G vibration tests will provide a vivid illustration of the key elements that separate a space qualified system from its laboratory counterpart. Flight laser performance measurements form the baseline in post-delivery test results to be presented at this conference.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Langley Research Center, Sixteenth International Laser Radar Conference, Part 1; p 133-136
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 6
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    JTEC panel on display technologies in Japan (1992)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: This report is one in a series of reports that describes research and development efforts in Japan in the area of display technologies. The following are included in this report: flat panel displays (technical findings, liquid crystal display development and production, large flat panel displays (FPD's), electroluminescent displays and plasma panels, infrastructure in Japan's FPD industry, market and projected sales, and new a-Si active matrix liquid crystal display (AMLCD) factory); materials for flat panel displays (liquid crystal materials, and light-emissive display materials); manufacturing and infrastructure of active matrix liquid crystal displays (manufacturing logistics and equipment); passive matrix liquid crystal displays (LCD basics, twisted nematics LCD's, supertwisted nematic LCD's, ferroelectric LCD's, and a comparison of passive matrix LCD technology); active matrix technology (basic active matrix technology, investment environment, amorphous silicon, polysilicon, and commercial products and prototypes); and projection displays (comparison of Japanese and U.S. display research, and technical evaluation of work).
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA-CR-198564 , NAS 1.26:198564
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 7
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    Fluorescence spectroscopy and thermometry for hypersonic flight research (1990)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The present study, which has demonstrated the feasibility of using time-resolved laser-induced fluorescence methods to ascertain boundary layer temperature distributions in real time for hypersonic vehicles in atmospheric flight, employs conventional optics in combination with novel time-resolved spectroscopy. The radiative lifetime and signal intensity involved, both of which are reduced by quenching, are adequate for measurement with state-of-the-art time-resolved fluorescence techniques, except for certain conditions associated with both the highest speeds and the lowest altitudes.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: AIAA PAPER 90-1272 , AIAA/SFTE/DGLR/SETP Biannual Flight Test Conference; May 22, 1990 - May 24, 1990; Ontario, CA; United States
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
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