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94 lines
1.9 KiB
Plaintext
94 lines
1.9 KiB
Plaintext
:doctype: manpage
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:man source: AsciiDoc
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:man version: {VERSION}
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:man manual: WSJT-X Manual
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= fst4sim(1)
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== NAME
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fst4sim, qra64sim - Generate simulated QRA64, FST4, and FST4W mode signals.
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== SYNOPSIS
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*qra64sim* msg A-E Nsigs fDop DT Nfiles SNR
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*fst4sim* msg TRsec f0 DT h fDop del Nfiles SNR W
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== DESCRIPTION
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*fst4sim* can be used to generate FST4 and FST4W signals with
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user-specified message content, mode parameters, and SNR values.
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== ARGS
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*msg*::
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A valid QRA64, FST4, or FST4W message enclosed in quotation marks.
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*A-E*::
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QRA64 sub-mode designator.
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*Nsigs*::
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Number of signals to simulate, distributed even across a 2000 Hz
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bandwidth.
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*TRsec*::
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A valid T/R period duration (s).
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*f0*::
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Integer signal frequency offset (Hz).
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*DT*::
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Decimal signal time offset (s).
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*h*::
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A valid modulation index.
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*fDop*::
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Decimal Doppler frequency spread (Hz).
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*del*::
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Decimal Watterson model delay (ms).
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*nfiles*::
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Number of files to generate.
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*snr*::
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Add Guassian noise to simulate SNR in 2500 Hz bandwidth.
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*W*::
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Hint to break ties between ambiguous messages '0' as 77-bit (FST4),
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'1' as 50-bit (FST4W).
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Generated files are 12000 Hz sample rate, 16-bit unsigned format, mono
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PCM .WAV files suitable for replay using WSJT-X either vie the GUI
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*wsjtx*(1) or using the command line slow mode decoder *jt9*(1). Files
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are named 000000_nnnnnn.wav (000000_nnnn.wav for QRA64), where
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'nnnnnn' or 'nnnn' increments from zero.
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== AUTHOR
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Joe Taylor, K1JT.
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== COPYING
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*fcal* is Copyright (C) 2001 - 2019 by Joseph H. Taylor, Jr., K1JT,
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with contributions from additional authors. WSJT-X is Open Source
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software, licensed under the GNU General Public License (GPLv3).
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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