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Minor code cleanup.

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This commit is contained in:
Joe Taylor 2020-10-04 15:22:45 -04:00
parent 95ec019da3
commit 20fb18c8ae
1 changed files with 8 additions and 11 deletions
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19
lib/sync64.f90
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@ -5,14 +5,14 @@ subroutine sync64(c0,nf1,nf2,nfqso,ntol,mode64,emedelay,dtx,f0,jpk,sync, &
parameter (NMAX=60*12000) !Max size of raw data at 12000 Hz
parameter (NSPS=3456) !Samples per symbol at 6000 Hz
parameter (NSPC=7*NSPS) !Samples per Costas array
parameter (NSPC=7*NSPS) !Samples per Costas waveform
real s1(0:NSPC-1) !Power spectrum of Costas 1
real s2(0:NSPC-1) !Power spectrum of Costas 2
real s3(0:NSPC-1) !Power spectrum of Costas 3
real s0(0:NSPC-1) !Sum of s1+s2+s3
real s0a(0:NSPC-1) !Best synchromized spectrum (saved)
real s0b(0:NSPC-1) !tmp
real a(5)
real a(5) !Parameters of Lorentzian fit
integer icos7(0:6) !Costas 7x7 tones
integer ipk0(1)
complex cc(0:NSPC-1) !Costas waveform
@ -25,11 +25,12 @@ subroutine sync64(c0,nf1,nf2,nfqso,ntol,mode64,emedelay,dtx,f0,jpk,sync, &
save
if(mode64.ne.mode64z) then
! Submode has changed, recompute the complex Costas waveform
twopi=8.0*atan(1.0)
dfgen=mode64*12000.0/6912.0
k=-1
phi=0.
do j=0,6 !Compute complex Costas waveform
do j=0,6
dphi=twopi*10.0*icos7(j)*dfgen/6000.0
do i=1,NSPS
phi=phi + dphi
@ -42,7 +43,6 @@ subroutine sync64(c0,nf1,nf2,nfqso,ntol,mode64,emedelay,dtx,f0,jpk,sync, &
endif
nfft3=NSPC
nh3=nfft3/2
df3=6000.0/nfft3
fa=max(nf1,nfqso-ntol)
@ -61,7 +61,7 @@ subroutine sync64(c0,nf1,nf2,nfqso,ntol,mode64,emedelay,dtx,f0,jpk,sync, &
smaxall=0.
jpk=0
ja=0
jb=(5.0+emedelay)*6000
jb=(5.0+emedelay)*6000 !Bigger range than necessary?
jstep=100
ipk=0
kpk=0
@ -69,7 +69,7 @@ subroutine sync64(c0,nf1,nf2,nfqso,ntol,mode64,emedelay,dtx,f0,jpk,sync, &
if(mod(nadd,2).eq.0) nadd=nadd+1 !Make nadd odd
nskip=max(49,nadd)
do j1=ja,jb,jstep
do j1=ja,jb,jstep !Loop over DT
call timer('sync64_1',0)
j2=j1 + 39*NSPS
j3=j1 + 77*NSPS
@ -95,7 +95,7 @@ subroutine sync64(c0,nf1,nf2,nfqso,ntol,mode64,emedelay,dtx,f0,jpk,sync, &
s0(ia:ib)=s1(ia:ib) + s2(ia:ib) + s3(ia:ib)
s0(:ia-1)=0.
s0(ib+1:)=0.
if(nadd.ge.3) then
if(nadd.ge.3) then !Smooth the spectrum
do ii=1,3
s0b(ia:ib)=s0(ia:ib)
call smo(s0b(ia:ib),iz,s0(ia:ib),nadd)
@ -114,7 +114,7 @@ subroutine sync64(c0,nf1,nf2,nfqso,ntol,mode64,emedelay,dtx,f0,jpk,sync, &
f0=ip*df3
endif
call timer('sync64_2',1)
enddo
enddo ! j1 (DT loop)
s0a=s0a+2.0
! write(17) ia,ib,s0a(ia:ib) !Save data for red curve
@ -141,7 +141,6 @@ subroutine sync64(c0,nf1,nf2,nfqso,ntol,mode64,emedelay,dtx,f0,jpk,sync, &
rewind 17
write(17,1110) 0.0,0.0
rewind 17
! rewind 76
do i=2,iz-2*nskip-1,3
x=i
z=(x-a(3))/(0.5*a(4))
@ -155,11 +154,9 @@ subroutine sync64(c0,nf1,nf2,nfqso,ntol,mode64,emedelay,dtx,f0,jpk,sync, &
ss=(s0a(j-1)+s0a(j)+s0a(j+1))/3.0
if(ss.gt.slimit) write(17,1110) freq,ss
1110 format(3f10.3)
! write(76,1110) freq,ss,yfit
enddo
flush(17)
close(17)
! flush(76)
return
end subroutine sync64