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Adds Single Tone capability to q65sim

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Charlie Suckling 2021-02-28 11:16:47 +01:00 committed by Bill Somerville
parent 7e1caae1d5
commit 7defc8846d
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GPG Key ID: D864B06D1E81618F
1 changed files with 7 additions and 1 deletions
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8
lib/qra/q65/q65sim.f90
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@ -25,11 +25,13 @@ program q65sim
if(nargs.ne.10) then
print*,'Usage: q65sim "msg" A-E freq fDop DT f1 Stp TRp Nfile SNR'
print*,'Example: q65sim "K1ABC W9XYZ EN37" A 1500 0.0 0.0 0.0 1 60 1 -26'
print*,'Example: q65sim "ST" A 1500 0.0 0.0 0.0 1 60 1 -26'
print*,' fDop = Doppler spread'
print*,' f1 = Drift or Doppler rate (Hz/min)'
print*,' Stp = Step size (Hz)'
print*,' Stp = 0 implies no Doppler tracking'
print*,' Creates filenames which increment to permit averaging in first period'
print*,' If msg = ST program produces a single tone at freq'
go to 999
endif
call getarg(1,msg)
@ -137,7 +139,11 @@ program q65sim
if(isym.ne.isym0) then
freq_drift=f1*i*dt/60.0
if(nstp.ne.0) freq_drift=freq_drift - nstp*nint(freq_drift/nstp)
freq = f0 + freq_drift + itone(isym)*baud*mode65
if (msg(1:2).eq.'ST') then
freq = f0 + freq_drift
else
freq = f0 + freq_drift + itone(isym)*baud*mode65
endif
dphi=twopi*freq*dt
isym0=isym
endif