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  • 1
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    Feasibility and cost study on VOIR SAR data transfer via a bent pipe link (1980)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: An INTELSAT/DOMSAT double hop bent pipe link for the Venus orbiting imaging radar synthetic aperture radar imaging data transfer from deep space stations 43 and 63 to the Jet Propulsion Laboratory was investigated. The cost for the bent pipe transfer was estimated and compared to that for the planned tape record/airfreight-the-tape transfer method.
    Keywords: COMMUNICATIONS AND RADAR
    Type: The Telecommun. and Data Acquisition Rept.; p 82-90
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    An experimental 20/30 GHz communications satellite conceptual design employing multiple-beam paraboloid reflector antennas (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: An experimental 20/30 GHz communications satellite conceptual design is described which employs multiple-beam paraboloid reflector antennas coupled to a TDMA transponder. It is shown that the satellite employs solid state GaAs FET power amplifiers and low noise amplifiers while signal processing and switching takes place on-board the spacecraft. The proposed areas to be served by this satellite would be the continental U.S. plus Alaska, Hawaii, Puerto Rico, and the Virgin Islands, as well as southern Canada and Mexico City. Finally, attention is given to the earth stations which are designed to be low cost.
    Keywords: COMMUNICATIONS AND RADAR
    Type: AIAA PAPER 80-0586 , Communications Satellite Systems Conference; Apr 20, 1980 - Apr 24, 1980; Orlando, FL
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Simulation of the infrared sky (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The paper describes the simulation of the infrared sky, including both astrophysical and nuisance objects, carried out in order to quantitatively study the impact of the various categories of expected events on the design of the telescope and data analysis system. Analysis of sources is outlined, and implementation of a sky model is covered.
    Keywords: ASTRONOMY
    Type: Summer Computer Simulation Conference; Jul 24, 1978 - Jul 26, 1978; Newport Beach, CA
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Mariner 9 mapping science sequence design. (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The primary mission of Mariner 9 was to map the Martian surface. This paper discusses in detail the design of the mapping science sequences which were executed by the spacecraft in sixty days and during which over eighty percent of the surface was photographed. The sequence design was influenced by many factors: experimenter scientific objectives, instrument capabilities, spacecraft capabilities, orbit characteristics, and data return rates, which are illustrated graphically. Typical orbits are depicted for each of the three different mapping phases lasting twenty days. Examples of typical orbital sequence plans prepared daily during mission operations are given.
    Keywords: SPACE VEHICLES
    Type: AIAA PAPER 73-204 , Aerospace Sciences Meeting; Jan 10, 1973 - Jan 12, 1973; Washington, DC
    Format: text
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    NASA TECHNICAL REPORTS
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