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Complete the process of separating calculation of the sync waveform.

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This commit is contained in:
Joe Taylor 2024-02-21 13:49:25 -05:00
parent 254a15b4f6
commit f896df064d
1 changed files with 5 additions and 14 deletions
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19
lib/superfox/sfox_gen.f90
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@ -3,6 +3,7 @@ subroutine sfox_gen(idat,f0,fsample,syncwidth,cdat)
use sfox_mod
! include "sfox_params.f90"
complex cdat(NMAX) !Generated complex waveform
complex ctmp(NSYNC)
complex w,wstep
integer idat(NN)
@ -25,20 +26,10 @@ subroutine sfox_gen(idat,f0,fsample,syncwidth,cdat)
enddo
enddo
! Sync waveform
a1=f0 + syncwidth/2.0 !Frequency at midpoint of sync waveform
a2=2.0*syncwidth/tsync !Frequency drift rate
x0=0.5*(nsync+1)
s=2.0/nsync
do i=1,nsync
j=j+1
if(i.eq.nsync/2+1) a2=-a2 !Reverse sign of drift at midpoint
x=s*(i-x0)
dphi=(a1 + x*a2) * (twopi/fsample)
wstep=cmplx(cos(dphi),sin(dphi))
w=w*wstep
cdat(j)=w
enddo
! Calculate and insert sync waveform
call sweep(f0,syncwidth,fsample,w,ctmp,nsync)
cdat(j:j+nsync-1)=ctmp
j=j+nsync
! Final group of data symbols:
do n=1,ND2