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Preemphasis for an S-band constant bandwidth FM/FM system.Preemphasis schedules are given for 11 constant-bandwidth FM subcarriers modulating an S-band transmitter at various receiver SNRs (9 dB, 15 dB and 25 dB). The criterion for establishing these preemphasis curves is the achievement, at various receiver IF SNR, of equal receiver output SNR for all channels. The empirically derived results are compared with a simplified, analytically derived schedule and the primary differences are explained. The S-band preemphasis schedule is also found to differ from the lower frequency VHF case.
Document ID
19730036283
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Wallace, G. R.
(NASA Marshall Space Flight Center Astrionics Laboratory, Huntsville, Ala., United States)
Salter, W. E.
(Sperry Rand Corp. Telemetry Systems Group, Huntsville, Ala., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Publication Information
Publication: Telemetry Journal
Volume: 8
Subject Category
Communications
Accession Number
73A21085
Distribution Limits
Public
Copyright
Other

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