Computing 2d ccf over all freqs takes too long and too much memory. There's a better way! Remove the 'nsmo' smoothing: it's not helpful.

This commit is contained in:
Joe Taylor 2021-01-16 14:18:15 -05:00
parent 20aa3a8e23
commit a53b3dc697
1 changed files with 2 additions and 8 deletions

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@ -11,7 +11,7 @@ module q65
38,46,50,55,60,62,66,69,74,76,85/)
integer codewords(63,206)
integer navg,ibwa,ibwb,ncw,nsps,mode_q65,nfa,nfb
integer istep,nsmo,lag1,lag2,npasses,nused
integer istep,lag1,lag2,npasses,nused
integer i0,j0
real,allocatable,save :: s1a(:,:) !Cumulative symbol spectra
real sync(85) !sync vector
@ -77,9 +77,7 @@ subroutine q65_dec0(iavg,nutc,iwave,ntrperiod,nfqso,ntol,ndepth,lclearave, &
jz=(txt+1.0)*12000.0/istep !Number of symbol/NSTEP bins
if(nsps.ge.6912) jz=(txt+2.0)*12000.0/istep !For TR 60 s and higher
ia=ntol/df
ia2=max(ia,10*mode_q65,nint(3000.0/df))
nsmo=int(0.7*mode_q65*mode_q65)
if(nsmo.lt.1) nsmo=1
ia2=max(ia,10*mode_q65,nint(100.0/df))
if(first) then !Generate the sync vector
sync=-22.0/63.0 !Sync tone OFF
do k=1,22
@ -244,10 +242,6 @@ subroutine q65_symspec(iwave,nmax,iz,jz,s1)
do i=1,iz
s1(i,j)=real(c0(i))**2 + aimag(c0(i))**2
enddo
! For large Doppler spreads, should we smooth the spectra here?
do i=1,nsmo
call smo121(s1(1:iz,j),iz)
enddo
enddo
s1a=s1a+s1
navg=navg+1