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EMI survey for maritime satellite, L-band, shipboard terminalThe United States Lines 15,690-ton commercial-container ship, American Alliance, was selected as lead ship for an onboard EMI survey prior to installation of L-Band shipboard terminals for operation with two, geostationary, maritime satellites. In general, the EMI survey revealed tolerable interference levels onboard ship: radiometer measurements indicate antenna-noise temperatures less than 70 K, at elevation angles of 5 deg and greater, at 1559 MHz, at the output terminals of the 1.2-m-diameter, parabolic-dish antenna for the L-Band shipboard terminal. Other EMI measurements include field intensity from 3 cm- and 10 cm-wavelength pulse radars, and conducted-emission tests of primary power lines to both onboard radars.
Document ID
19760003112
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Taylor, R. E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hill, J. S. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Brandel, D. L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 3, 2013
Publication Date
December 1, 1974
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Report/Patent Number
X-953-74-364
NASA-TM-X-70999
Report Number: X-953-74-364
Report Number: NASA-TM-X-70999
Meeting Information
Meeting: Electromagnetic Compatibility EMC Symp. and Exhibition
Location: Montreux
Country: Switzerland
Start Date: May 20, 1975
End Date: May 22, 1975
Accession Number
76N10200
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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