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Simple standalone program msk32d to decode MSK144 short messages. It must be built using the genmsk32.f90 from r6951 (Golay code, 8-bit sync).

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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6955 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor 2016-07-27 16:37:32 +00:00
parent aeed9e3344
commit bcef802525
2 changed files with 127 additions and 52 deletions
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5
CMakeLists.txt
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@ -1029,6 +1029,9 @@ target_link_libraries (jt65sim wsjt_fort wsjt_cxx)
add_executable (qra64sim lib/qra/qra64/qra64sim.f90 wsjtx.rc)
target_link_libraries (qra64sim wsjt_fort wsjt_cxx)
add_executable (msk32d lib/msk32d.f90 wsjtx.rc)
target_link_libraries (msk32d wsjt_fort wsjt_cxx)
add_executable (jt9sim lib/jt9sim.f90 wsjtx.rc)
target_link_libraries (jt9sim wsjt_fort wsjt_cxx)
@ -1202,7 +1205,7 @@ install (TARGETS udp_daemon message_aggregator
BUNDLE DESTINATION ${WSJT_BIN_DESTINATION} COMPONENT runtime
)
install (TARGETS jt9 jt65code qra64code qra64sim jt9code jt4code wsprd
install (TARGETS jt9 jt65code qra64code qra64sim jt9code jt4code wsprd msk32d
RUNTIME DESTINATION ${WSJT_BIN_DESTINATION} COMPONENT runtime
BUNDLE DESTINATION ${WSJT_BIN_DESTINATION} COMPONENT runtime
)

174
lib/msk32d.f90
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@ -1,44 +1,66 @@
program msk32d
parameter (NZ=15*12000)
parameter (NZ=15*12000,NZ0=262144)
parameter (NSPM=6*32)
complex c0(0:NZ-1)
complex c0(0:NZ0-1)
complex c(0:NZ-1)
complex cmsg(0:NSPM-1,0:31)
complex z
real*8 twopi,freq,phi,dphi0,dphi1,dphi
real a(3)
real p0(0:NSPM-1)
real p(0:NSPM-1)
real s0(0:31)
real dd(NZ)
integer itone(144)
integer ihdr(11)
integer ipk0(1)
integer*2 id2(NZ)
character*22 msg,msgsent
character mycall*8,hiscall*6,arg*12,infile*80,datetime*13
character*4 rpt(0:31)
data rpt /'-04 ','-02 ','+00 ','+02 ','+04 ','+06 ','+08 ','+10 ','+12 ', &
'+14 ','+16 ','+18 ','+20 ','+22 ','+24 ', &
'R-04','R-02','R+00','R+02','R+04','R+06','R+08','R+10','R+12', &
'R+14','R+16','R+18','R+20','R+22','R+24', &
'RRR ','73 '/
equivalence (ipk0,ipk)
twopi=8.d0*atan(1.d0)
nargs=iargc()
if(nargs.lt.5) then
print*,'Usage: msk32d Call_1 Call_2 f1 f2 file1 [file2 ...]'
print*,'Example: msk32d K9AN K1JT 1500 1500 fort.61'
go to 999
endif
call getarg(1,mycall)
call getarg(2,hiscall)
call getarg(3,arg)
read(arg,*) nf1
call getarg(4,arg)
read(arg,*) nf2
idf1=nf1-1500
idf2=nf2-1500
! Generate the test messages
twopi=8.0*atan(1.0)
nsym=32
freq=1500.d0
dphi0=twopi*(freq-500.d0)/12000.d0
dphi1=twopi*(freq+500.d0)/12000.d0
freq=1500.0
dphi0=twopi*(freq-500.0)/12000.0
dphi1=twopi*(freq+500.0)/12000.0
do imsg=0,31
msg="<K9AN K1JT> "//rpt(imsg)
i=index(hiscall," ")
msg="<"//mycall//" "//hiscall(1:i-1)//"> "//rpt(imsg)
call fmtmsg(msg,iz)
ichk=0
call genmsk32(msg,msgsent,ichk,itone,itype)
phi=0.d0
phi=0.0
k=0
do i=1,nsym
dphi=dphi0
if(itone(i).eq.1) dphi=dphi1
do j=1,6
xphi=phi
x=cos(xphi)
y=sin(xphi)
x=cos(phi)
y=sin(phi)
cmsg(k,imsg)=cmplx(x,y)
k=k+1
phi=phi+dphi
@ -47,46 +69,96 @@ program msk32d
enddo
enddo
read(61) npts,c0(0:npts-1)
! Process the specified files
nfiles=nargs-4
do ifile=1,nfiles !Loop over all files
call getarg(ifile+4,infile)
open(10,file=infile,access='stream',status='old')
read(10) ihdr,id2
dd=0.03*id2
npts=NZ
n=log(float(npts))/log(2.0) + 1.0
nfft=min(2**n,1024*1024)
call analytic(dd,npts,nfft,c0) !Convert to analytic signal
sbest=0.
do imsg=0,31 !Try all short messages
do idf=idf1,idf2,10 !Frequency dither
a(1)=-idf
a(2:3)=0.
call twkfreq(c0,c,npts,12000.0,a)
smax=0.
p=0.
fac=1.0/192
do j=0,npts-NSPM,2
z=fac*dot_product(c(j:j+NSPM-1),cmsg(0:NSPM-1,imsg))
s=real(z)**2 + aimag(z)**2
k=mod(j,NSPM)
p(k)=p(k)+s
! if(imsg.eq.30) write(13,1010) j/12000.0,s,k
!1010 format(2f12.6,i5)
if(s.gt.smax) then
smax=s
jpk=j
f0=idf
if(smax.gt.sbest) then
sbest=smax
p0=p
ibest=imsg
endif
endif
enddo
s0(imsg)=smax
enddo
enddo
sbest=0.
do imsg=0,31
! do idf=-50,50,10
! imsg=30
idf=-5
a(1)=-idf
a(2:3)=0.
call twkfreq(c0,c,npts,12000.0,a)
smax=0.
p=0.
fac=1.0/192
do j=0,npts-NSPM,2
z=fac*dot_product(c(j:j+NSPM-1),cmsg(0:NSPM-1,imsg))
s=real(z)**2 + aimag(z)**2
k=mod(j,NSPM)
p(k)=p(k)+s
if(imsg.eq.30) write(13,1010) j/12000.0,s,k
1010 format(2f12.6,i5)
if(s.gt.smax) then
smax=s
jpk=j
f0=idf
if(smax.gt.sbest) then
sbest=smax
p0=p
endif
ipk0=maxloc(p0)
ps=0.
sq=0.
ns=0
pmax=0.
do i=0,NSPM-1,2
j=ipk-i
if(j.gt.96) j=j-192
if(j.lt.-96) j=j+192
if(abs(j).gt.4) then
ps=ps+p0(i)
sq=sq+p0(i)**2
ns=ns+1
endif
enddo
write(*,1020) imsg,idf,jpk/12000.0,smax
write(15,1020) imsg,idf,jpk/12000.0,smax
1020 format(2i6,2f10.2)
avep=ps/ns
rmsp=sqrt(sq/ns - avep*avep)
p0=(p0-avep)/rmsp
p1=maxval(p0)
do i=0,NSPM-1,2
write(14,1030) i,i/12000.0,p0(i)
1030 format(i5,f10.6,f10.3)
enddo
ave=(sum(s0)-sbest)/31
s0=s0-ave
s1=sbest-ave
s2=0.
do i=0,31
if(i.ne.ibest .and. s0(i).gt.s2) s2=s0(i)
write(15,1020) i,idf,jpk/12000.0,s0(i)
1020 format(2i6,2f10.2)
enddo
i=index(infile,".wav")
datetime=infile(i-13:i-1)
r1=s1/s2
r2=r1+p1
msg=" "
! if(r1.gt.2.2 .or. p1.gt.7.0) then
if(r2.gt.10.0) then
i=index(hiscall," ")
msg="<"//mycall//" "//hiscall(1:i-1)//"> "//rpt(ibest)
call fmtmsg(msg,iz)
endif
write(*,1040) datetime,r1,p1,r2,msg
1040 format(a13,3f7.1,2x,a22)
enddo
imsg=30
do i=0,NSPM-1,2
write(14,1030) i,i/12000.0,p0(i)
1030 format(i5,f10.6,f10.3)
enddo
end program msk32d
999 end program msk32d