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All Library Books, journals and Electronic Records Telegrafenberg

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  • Weitere Quellen  (3)
  • ELECTRONIC COMPONENTS AND CIRCUITS  (2)
  • COMPUTER PROGRAMMING AND SOFTWARE  (1)
  • 1995-1999  (3)
  • 1950-1954
  • 1
    Publikationsdatum: 2019-06-28
    Beschreibung: The Software Engineering Laboratory (SEL) is an organization sponsored by NASA/GSFC and created to investigate the effectiveness of software engineering technologies when applied to the development of applications software. The goals of the SEL are (1) to understand the software development process in the GSFC environment; (2) to measure the effects of various methodologies, tools, and models on this process; and (3) to identify and then to apply successful development practices. The activities, findings, and recommendations of the SEL are recorded in the Software Engineering Laboratory Series, a continuing series of reports that includes this document.
    Schlagwort(e): COMPUTER PROGRAMMING AND SOFTWARE
    Materialart: NASA-CR-189412 , SEL-95-001 , NAS 1.26:189412
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Publikationsdatum: 2019-07-13
    Beschreibung: Proposed method of obtaining approximately desired radiation or reception pattern from antenna that includes reflector based on concept of superposition of electromagnetic fields generated by multiple feedhorns or feed antenna elements arrayed at various positions near reflector and excited at electronically adjustable magnitudes and phases. In intended application, reflector nominally paraboloidal, feed elements N feedhorns in hexagonal array, and method used to compensate for deviations of real reflector surface from nominal paraboloidal shape. Method and concept also applicable to electronic beam steering and electronic antenna compensation in other situations.
    Schlagwort(e): ELECTRONIC COMPONENTS AND CIRCUITS
    Materialart: LAR-14461 , NASA Tech Briefs (ISSN 0145-319X); 19; 1; P. 32
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    Publikationsdatum: 2019-07-13
    Beschreibung: Mutual Coupling Program for Circular Waveguide-fed Aperture Array (CWG) computer program developed to calculate electromagnetic interactions among elements of antenna arrays with circular apertures with specified distributions of electromagnetic fields in apertures. Distributions assumed superpositions of electromagnetic modes existing in circular waveguide. Various external media included to provide flexibility of use; for example, flexibility to determine effects of dielectric covers upon impedances of aperture-type antennas. Written in VAX FORTRAN for DEC VAX-series computers running VMS (LAR-15236) and IBM PC-series and compatible computers running MS-DOS (LAR-15226).
    Schlagwort(e): ELECTRONIC COMPONENTS AND CIRCUITS
    Materialart: LAR-15226 , LAR-15236 , NASA Tech Briefs (ISSN 0145-319X); 19; 4; P. 62
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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