mirror of https://github.com/saitohirga/WSJT-X.git
MOving toward use of sync64(). Not yet there!
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6939 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor
parent
7d083b16a6
commit
31f8733e7f
|
|
@ -305,6 +305,7 @@ set (wsjt_FSRCS
|
|||
lib/astrosub.f90
|
||||
lib/astro0.f90
|
||||
lib/avecho.f90
|
||||
lib/averms.f90
|
||||
lib/azdist.f90
|
||||
lib/baddata.f90
|
||||
lib/ccf2.f90
|
||||
|
|
@ -442,6 +443,7 @@ set (wsjt_FSRCS
|
|||
lib/symspec2.f90
|
||||
lib/symspec65.f90
|
||||
lib/sync4.f90
|
||||
lib/sync64.f90
|
||||
lib/sync65.f90
|
||||
lib/sync9.f90
|
||||
lib/sync9f.f90
|
||||
|
|
|
|||
|
|
@ -0,0 +1,20 @@
|
|||
subroutine averms(x,n,nskip,ave,rms)
|
||||
real x(n)
|
||||
integer ipk(1)
|
||||
|
||||
ns=0
|
||||
s=0.
|
||||
sq=0.
|
||||
ipk=maxloc(x)
|
||||
do i=1,n
|
||||
if(abs(i-ipk(1)).gt.nskip) then
|
||||
s=s + x(i)
|
||||
sq=sq + x(i)**2
|
||||
ns=ns+1
|
||||
endif
|
||||
enddo
|
||||
ave=s/ns
|
||||
rms=sqrt(sq/ns - ave*ave)
|
||||
|
||||
return
|
||||
end subroutine averms
|
||||
|
|
@ -16,9 +16,13 @@ subroutine qra64a(dd0,nutc,nf1,nf2,nfqso,ntol,mycall_12,hiscall_12, &
|
|||
real savg(NZ)
|
||||
real blue(0:25)
|
||||
real red(NZ)
|
||||
real ss(NZ,194)
|
||||
real ccf(NZ,0:25)
|
||||
real s3(0:63,1:63)
|
||||
real s3a(0:63,1:63)
|
||||
data icos7/2,5,6,0,4,1,3/ !Costas 7x7 pattern
|
||||
data nc1z/-1/,nc2z/-1/,ng2z/-1/
|
||||
common/qra64com/ss(NZ,194),s3(0:63,1:63),ccf(NZ,0:25)
|
||||
! common/qra64com/ss(NZ,194),ccf(NZ,0:25),s3(0:63,1:63),s3a(0:63,1:63)
|
||||
save
|
||||
|
||||
! write(60) dd0
|
||||
|
|
@ -98,6 +102,11 @@ subroutine qra64a(dd0,nutc,nf1,nf2,nfqso,ntol,mycall_12,hiscall_12, &
|
|||
|
||||
if(sync.gt.1.0) snr1=10.0*log10(sync) - 39.0
|
||||
nsnr=nint(snr1)
|
||||
! write(*,5001) dtx,nint(f0),0,snr1
|
||||
!5001 format(f6.3,2i6,f7.1)
|
||||
maxf1=10
|
||||
call sync64(dd0,nf1,nf2,maxf1,dtx,f0,kpk,snr,s3a)
|
||||
! write(*,5001) dtx,nint(f0),kpk,snr
|
||||
|
||||
mycall=mycall_12(1:6) !### May need fixing ###
|
||||
hiscall=hiscall_12(1:6)
|
||||
|
|
@ -171,3 +180,6 @@ subroutine spec64(dd,j0,s,savg,ss)
|
|||
|
||||
return
|
||||
end subroutine spec64
|
||||
|
||||
include 'sync64.f90'
|
||||
include 'averms.f90'
|
||||
|
|
|
|||
|
|
@ -0,0 +1,120 @@
|
|||
subroutine sync64(dd,nf1,nf2,maxf1,dtx,f0,kpk,snrdb,s3a)
|
||||
parameter (NMAX=60*12000) !Max size of raw data at 12000 Hz
|
||||
parameter (NSPS=2304) !Samples per symbol at 4000 Hz
|
||||
parameter (NSPC=7*NSPS) !Samples per Costas array
|
||||
real dd(NMAX) !Raw data
|
||||
real x(672000) !Up to 56 s at 12000 Hz
|
||||
real t(5)
|
||||
real s3a(0:63,1:63)
|
||||
real s0(0:NSPC-1)
|
||||
real s1(0:NSPC-1)
|
||||
real s2(0:NSPC-1)
|
||||
real s3(0:NSPC-1)
|
||||
real s0a(0:NSPC-1)
|
||||
|
||||
integer*8 count0,count1,clkfreq
|
||||
integer icos7(0:6)
|
||||
integer ipk0(1)
|
||||
|
||||
complex cc(0:NSPC-1)
|
||||
complex c0(0:336000)
|
||||
complex c1(0:NSPC-1)
|
||||
complex c2(0:NSPC-1)
|
||||
complex c3(0:NSPC-1)
|
||||
equivalence (x,c0)
|
||||
data icos7/2,5,6,0,4,1,3/ !Costas 7x7 pattern
|
||||
save
|
||||
|
||||
twopi=8.0*atan(1.0)
|
||||
dfgen=12000.0/6912.0
|
||||
k=-1
|
||||
phi=0.
|
||||
do j=0,6
|
||||
dphi=twopi*icos7(j)*dfgen/4000.0
|
||||
do i=1,2304
|
||||
phi=phi + dphi
|
||||
if(phi.gt.twopi) phi=phi-twopi
|
||||
k=k+1
|
||||
cc(k)=cmplx(cos(phi),sin(phi))
|
||||
enddo
|
||||
enddo
|
||||
|
||||
npts0=54*12000
|
||||
nfft1=672000
|
||||
nfft2=nfft1/3
|
||||
df1=12000.0/nfft1
|
||||
fac=2.0/nfft1
|
||||
x=fac*dd(1:nfft1)
|
||||
call system_clock(count0,clkfreq)
|
||||
call four2a(c0,nfft1,1,-1,0) !Forward r2c FFT
|
||||
call four2a(c0,nfft2,1,1,1) !Inverse c2c FFT; c0 is analytic sig
|
||||
call system_clock(count1,clkfreq)
|
||||
t(1)=float(count1-count0)/float(clkfreq)
|
||||
npts2=npts0/3 !Downsampled complex data length
|
||||
nfft3=NSPC
|
||||
nh3=nfft3/2
|
||||
df3=4000.0/nfft3
|
||||
ia=nint(nf1/df3)
|
||||
ib=nint(nf2/df3)
|
||||
iz=ib-ia+1
|
||||
snr=0.
|
||||
jpk=0
|
||||
ja=0
|
||||
jb=6*4000
|
||||
jstep=200
|
||||
ka=-maxf1
|
||||
kb=maxf1
|
||||
ipk=0
|
||||
kpk=0
|
||||
call system_clock(count0,clkfreq)
|
||||
do iter=1,2
|
||||
do j1=ja,jb,jstep
|
||||
j2=j1 + 39*2304
|
||||
j3=j1 + 77*2304
|
||||
c1=1.e-4*c0(j1:j1+NSPC-1) * conjg(cc)
|
||||
call four2a(c1,nfft3,1,-1,1)
|
||||
c2=1.e-4*c0(j2:j2+NSPC-1) * conjg(cc)
|
||||
call four2a(c2,nfft3,1,-1,1)
|
||||
c3=1.e-4*c0(j3:j3+NSPC-1) * conjg(cc)
|
||||
call four2a(c3,nfft3,1,-1,1)
|
||||
s0=0.
|
||||
s1=0.
|
||||
s2=0.
|
||||
s3=0.
|
||||
do i=ia,ib
|
||||
freq=i*df3
|
||||
s1(i)=real(c1(i))**2 + aimag(c1(i))**2
|
||||
s2(i)=real(c2(i))**2 + aimag(c2(i))**2
|
||||
s3(i)=real(c3(i))**2 + aimag(c3(i))**2
|
||||
enddo
|
||||
do k=ka,kb
|
||||
s0(ia:ib)=s1(ia-k:ib-k) + s2(ia:ib) + s3(ia+k:ib+k)
|
||||
call smo121(s0(ia:ib),iz)
|
||||
call averms(s0(ia:ib),iz,14,ave,rms)
|
||||
s=(maxval(s0(ia:ib))-ave)/rms
|
||||
if(s.gt.snr) then
|
||||
jpk=j1
|
||||
s0a=s0
|
||||
snr=s
|
||||
dtx=jpk/4000.0 - 1.0
|
||||
ipk0=maxloc(s0(ia:ib))
|
||||
ipk=ipk0(1)
|
||||
f0=(ipk+ia-1)*df3
|
||||
kpk=k
|
||||
! write(16,3101) jpk,ipk,kpk,dtx,f0,snr
|
||||
!3101 format(3i5,f8.3,f8.2,f10.1)
|
||||
endif
|
||||
enddo
|
||||
enddo
|
||||
ja=jpk-2*jstep
|
||||
jb=jpk+2*jstep
|
||||
jstep=10
|
||||
! ka=kpk
|
||||
! kb=kpk
|
||||
enddo
|
||||
call system_clock(count1,clkfreq)
|
||||
t(2)=float(count1-count0)/float(clkfreq)
|
||||
snrdb=10.0*log10(snr)-39.0
|
||||
|
||||
return
|
||||
end subroutine sync64
|
||||
Loading…
Reference in New Issue