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Jordan Sherer
2018-08-05 11:33:30 -04:00
parent 8f8772f1bd
commit 62899069bf
1222 changed files with 70382 additions and 406763 deletions
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.svn/pristine/30/3004971fecd27c1c6e139fa67e7f378e5647ebd1.svn-base
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program ft8sim
! Generate simulated data for a 15-second HF/6m mode using 8-FSK.
! Output is saved to a *.wav file.
use wavhdr
include 'ft8_params.f90' !Set various constants
parameter (NWAVE=NN*NSPS)
type(hdr) h !Header for .wav file
character arg*12,fname*17
character msg40*40,msg*22,msgsent*22,msg0*22
character*6 mygrid6
logical bcontest
complex c0(0:NMAX-1)
complex c(0:NMAX-1)
real wave(NMAX)
integer itone(NN)
integer*1 msgbits(KK)
integer*2 iwave(NMAX) !Generated full-length waveform
data mygrid6/'EM48 '/
! Get command-line argument(s)
nargs=iargc()
if(nargs.ne.8) then
print*,'Usage: ft8sim "message" nsig|f0 DT fdop del width nfiles snr'
print*,'Examples: ft8sim "K1ABC W9XYZ EN37" 1500.0 0.0 0.1 1.0 0 10 -18'
print*,' ft8sim "K1ABC W9XYZ EN37" 10 0.0 0.1 1.0 25 10 -18'
print*,' ft8sim "K1ABC W9XYZ EN37" 25 0.0 0.1 1.0 25 10 -18'
print*,' ft8sim "K1ABC RR73; W9XYZ <KH1/KH7Z> -11" 300 0 0 0 25 1 -10'
print*,'Make nfiles negative to invoke 72-bit contest mode.'
go to 999
endif
call getarg(1,msg40) !Message to be transmitted
call getarg(2,arg)
read(arg,*) f0 !Frequency (only used for single-signal)
call getarg(3,arg)
read(arg,*) xdt !Time offset from nominal (s)
call getarg(4,arg)
read(arg,*) fspread !Watterson frequency spread (Hz)
call getarg(5,arg)
read(arg,*) delay !Watterson delay (ms)
call getarg(6,arg)
read(arg,*) width !Filter transition width (Hz)
call getarg(7,arg)
read(arg,*) nfiles !Number of files
call getarg(8,arg)
read(arg,*) snrdb !SNR_2500
nsig=1
if(f0.lt.100.0) then
nsig=f0
f0=1500
endif
bcontest=nfiles.lt.0
nfiles=abs(nfiles)
twopi=8.0*atan(1.0)
fs=12000.0 !Sample rate (Hz)
dt=1.0/fs !Sample interval (s)
tt=NSPS*dt !Duration of symbols (s)
baud=1.0/tt !Keying rate (baud)
bw=8*baud !Occupied bandwidth (Hz)
txt=NZ*dt !Transmission length (s)
bandwidth_ratio=2500.0/(fs/2.0)
sig=sqrt(2*bandwidth_ratio) * 10.0**(0.05*snrdb)
if(snrdb.gt.90.0) sig=1.0
txt=NN*NSPS/12000.0
! Source-encode, then get itone()
if(index(msg40,';').le.0) then
i3bit=0
msg=msg40(1:22)
call genft8(msg,mygrid6,bcontest,i3bit,msgsent,msgbits,itone)
write(*,1000) f0,xdt,txt,snrdb,bw,msgsent
1000 format('f0:',f9.3,' DT:',f6.2,' TxT:',f6.1,' SNR:',f6.1, &
' BW:',f4.1,2x,a22)
else
call foxgen_wrap(msg40,msgbits,itone)
write(*,1001) f0,xdt,txt,snrdb,bw,msg40
1001 format('f0:',f9.3,' DT:',f6.2,' TxT:',f6.1,' SNR:',f6.1, &
' BW:',f4.1,2x,a40)
endif
write(*,1030) msgbits(1:56)
1030 format(/'Call1: ',28i1,' Call2: ',28i1)
write(*,1032) msgbits(57:72),msgbits(73:75),msgbits(76:87)
1032 format('Grid: ',16i1,' 3Bit: ',3i1,' CRC12: ',12i1)
write(*,1034) itone
1034 format(/'Channel symbols:'/79i1/)
msg0=msg
do ifile=1,nfiles
c=0.
do isig=1,nsig
c0=0.
if(nsig.eq.2) then
if(index(msg,'R-').gt.0) f0=500
i1=index(msg,' ')
msg(i1+4:i1+4)=char(ichar('A')+isig-1)
if(isig.eq.2) then
f0=f0+100
endif
call genft8(msg,mygrid6,bcontest,i3bit,msgsent,msgbits,itone)
endif
if(nsig.eq.25) then
f0=(isig+2)*100.0
else if(nsig.eq.50) then
msg=msg0
f0=1000.0 + (isig-1)*60.0
i1=index(msg,' ')
i2=index(msg(i1+1:),' ') + i1
msg(i1+2:i1+2)=char(ichar('0')+mod(isig-1,10))
msg(i1+3:i1+3)=char(ichar('A')+mod(isig-1,26))
msg(i1+4:i1+4)=char(ichar('A')+mod(isig-1,26))
msg(i1+5:i1+5)=char(ichar('A')+mod(isig-1,26))
write(msg(i2+3:i2+4),'(i2.2)') isig-1
if(ifile.ge.2 .and. isig.eq.ifile-1) then
write(msg(i2+1:i2+4),1002) -isig
1002 format('R',i3.2)
f0=600.0 + mod(isig-1,5)*60.0
endif
call genft8(msg,mygrid6,bcontest,i3bit,msgsent,msgbits,itone)
endif
k=-1 + nint((xdt+0.5+0.01*gran())/dt)
! k=-1 + nint((xdt+0.5)/dt)
ia=k+1
phi=0.0
do j=1,NN !Generate complex waveform
dphi=twopi*(f0+itone(j)*baud)*dt
do i=1,NSPS
k=k+1
phi=mod(phi+dphi,twopi)
if(k.ge.0 .and. k.lt.NMAX) c0(k)=cmplx(cos(phi),sin(phi))
enddo
enddo
if(fspread.ne.0.0 .or. delay.ne.0.0) call watterson(c0,NMAX,fs,delay,fspread)
c=c+sig*c0
enddo
ib=k
wave=real(c)
peak=maxval(abs(wave(ia:ib)))
rms=sqrt(dot_product(wave(ia:ib),wave(ia:ib))/NWAVE)
nslots=1
if(width.gt.0.0) call filt8(f0,nslots,width,wave)
if(snrdb.lt.90) then
do i=1,NMAX !Add gaussian noise at specified SNR
xnoise=gran()
! wave(i)=wave(i) + xnoise
! if(i.ge.ia .and. i.le.ib) write(30,3001) i,wave(i)/peak
!3001 format(i8,f12.6)
wave(i)=wave(i) + xnoise
enddo
endif
fac=32767.0
rms=100.0
if(snrdb.ge.90.0) iwave(1:NMAX)=nint(fac*wave)
if(snrdb.lt.90.0) iwave(1:NMAX)=nint(rms*wave)
h=default_header(12000,NMAX)
write(fname,1102) ifile
1102 format('000000_',i6.6,'.wav')
open(10,file=fname,status='unknown',access='stream')
write(10) h,iwave !Save to *.wav file
close(10)
write(*,1110) ifile,xdt,f0,snrdb,fname
1110 format(i4,f7.2,f8.2,f7.1,2x,a17)
enddo
999 end program ft8sim
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0; 0; 0
0; 0; 9
0; 0; 21
0; 0; 34
0; 0; 45
0; 0; 57
0; 0; 67
0; 0; 77
0; 0; 86
0; 0; 94
0; 12;101
0; 23;106
0; 35;110
0; 46;113
0; 57;115
0; 68;115
0; 78;114
0; 88;112
0; 97;108
0;106;103
0;114; 97
0;122; 90
0;129; 81
0;136; 72
0;141; 62
0;146; 51
0;151; 39
11;154; 27
29;157; 15
46;158; 2
63;159; 0
79;159; 0
96;159; 0
111;157; 0
127;155; 0
142;152; 0
156;148; 0
169;143; 0
182;138; 0
193;131; 0
204;124; 0
214;117; 0
223;109; 0
231;100; 0
238; 91; 0
244; 81; 0
248; 71; 0
252; 60; 5
254; 50; 19
255; 38; 33
255; 47; 47
255; 61; 61
255; 75; 75
255; 90; 90
255;105;105
255;121;121
255;138;138
255;156;156
255;175;175
255;196;196
255;218;218
255;243;243
255;255;255
255;255;255
255;255;255
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// -*- Mode: C++ -*-
#ifndef WIDEGRAPH_H
#define WIDEGRAPH_H
#include <QDialog>
#include <QScopedPointer>
#include <QDir>
#include <QHash>
#include <QVariant>
#include "WFPalette.hpp"
#define MAX_SCREENSIZE 2048
namespace Ui {
class WideGraph;
}
class QSettings;
class Configuration;
class WideGraph : public QDialog
{
Q_OBJECT
public:
explicit WideGraph(QSettings *, QWidget *parent = 0);
~WideGraph ();
void dataSink2(float s[], float df3, int ihsym, int ndiskdata);
void setRxFreq(int n);
int rxFreq();
int nStartFreq();
int Fmin();
int Fmax();
int fSpan();
void saveSettings();
void setFsample(int n);
void setPeriod(int ntrperiod, int nsps);
void setTxFreq(int n);
void setMode(QString mode);
void setSubMode(int n);
void setModeTx(QString modeTx);
bool flatten();
bool useRef();
void setTol(int n);
int smoothYellow();
void setRxBand (QString const& band);
void setWSPRtransmitted();
void drawRed(int ia, int ib);
void setVHF(bool bVHF);
void setRedFile(QString fRed);
signals:
void freezeDecode2(int n);
void f11f12(int n);
void setXIT2(int n);
void setFreq3(int rxFreq, int txFreq);
public slots:
void wideFreezeDecode(int n);
void setFreq2(int rxFreq, int txFreq);
void setDialFreq(double d);
protected:
void keyPressEvent (QKeyEvent *e) override;
void closeEvent (QCloseEvent *) override;
private slots:
void on_waterfallAvgSpinBox_valueChanged(int arg1);
void on_bppSpinBox_valueChanged(int arg1);
void on_spec2dComboBox_currentIndexChanged(const QString &arg1);
void on_fSplitSpinBox_valueChanged(int n);
void on_fStartSpinBox_valueChanged(int n);
void on_paletteComboBox_activated(const QString &palette);
void on_cbFlatten_toggled(bool b);
void on_cbRef_toggled(bool b);
void on_cbControls_toggled(bool b);
void on_adjust_palette_push_button_clicked (bool);
void on_gainSlider_valueChanged(int value);
void on_zeroSlider_valueChanged(int value);
void on_gain2dSlider_valueChanged(int value);
void on_zero2dSlider_valueChanged(int value);
void on_smoSpinBox_valueChanged(int n);
void on_sbPercent2dPlot_valueChanged(int n);
private:
void readPalette ();
void setRxRange ();
QScopedPointer<Ui::WideGraph> ui;
QSettings * m_settings;
QDir m_palettes_path;
WFPalette m_userPalette;
qint32 m_waterfallAvg;
qint32 m_TRperiod;
qint32 m_nsps;
qint32 m_ntr0;
QHash<QString, QVariant> m_fMinPerBand;
qint32 m_fMax;
QString m_rxBand;
qint32 m_nSubMode;
qint32 m_nsmo;
qint32 m_Percent2DScreen;
bool m_bFlatten;
bool m_bRef;
bool m_bHaveTransmitted; //Set true at end of a WSPR transmission
QString m_mode;
QString m_modeTx;
QString m_waterfallPalette;
int m_n;
};
#endif // WIDEGRAPH_H
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subroutine ft8b(dd0,newdat,nQSOProgress,nfqso,nftx,ndepth,lapon,napwid, &
lsubtract,nagain,iaptype,mygrid6,bcontest,sync0,f1,xdt,xbase,apsym, &
nharderrors,dmin,nbadcrc,ipass,iera,message,xsnr)
use timer_module, only: timer
include 'ft8_params.f90'
parameter(NRECENT=10,NP2=2812)
character message*22,msgsent*22
character*12 recent_calls(NRECENT)
character*6 mygrid6
logical bcontest
real a(5)
real s1(0:7,ND),s2(0:7,NN)
real ps(0:7)
real bmeta(3*ND),bmetap(3*ND)
real llr(3*ND),llra(3*ND),llr0(3*ND),llrap(3*ND) !Soft symbols
real dd0(15*12000)
integer*1 decoded(KK),apmask(3*ND),cw(3*ND)
integer*1 msgbits(KK)
integer apsym(KK)
integer mcq(28),mde(28),mrrr(16),m73(16),mrr73(16)
integer itone(NN)
integer icos7(0:6),ip(1)
integer nappasses(0:5) ! the number of decoding passes to use for each QSO state
integer naptypes(0:5,4) ! (nQSOProgress, decoding pass) maximum of 4 passes for now
complex cd0(3200)
complex ctwk(32)
complex csymb(32)
logical first,newdat,lsubtract,lapon,nagain
data icos7/2,5,6,0,4,1,3/
data mcq/1,1,1,1,1,0,1,0,0,0,0,0,1,0,0,0,0,0,1,1,0,0,0,1,1,0,0,1/
data mrrr/0,1,1,1,1,1,1,0,1,1,0,0,1,1,1,1/
data m73/0,1,1,1,1,1,1,0,1,1,0,1,0,0,0,0/
data mde/1,1,1,1,1,1,1,1,0,1,1,0,0,1,0,0,0,0,0,1,1,1,0,1,0,0,0,1/
data mrr73/0,0,0,0,0,0,1,0,0,0,0,1,0,1,0,1/
data first/.true./
save nappasses,naptypes
if(first) then
mcq=2*mcq-1
mde=2*mde-1
mrrr=2*mrrr-1
m73=2*m73-1
mrr73=2*mrr73-1
nappasses(0)=2
nappasses(1)=2
nappasses(2)=2
nappasses(3)=4
nappasses(4)=4
nappasses(5)=3
! iaptype
!------------------------
! 1 CQ ??? ???
! 2 MyCall ??? ???
! 3 MyCall DxCall ???
! 4 MyCall DxCall RRR
! 5 MyCall DxCall 73
! 6 MyCall DxCall RR73
! 7 ??? DxCall ???
naptypes(0,1:4)=(/1,2,0,0/)
naptypes(1,1:4)=(/2,3,0,0/)
naptypes(2,1:4)=(/2,3,0,0/)
naptypes(3,1:4)=(/3,4,5,6/)
naptypes(4,1:4)=(/3,4,5,6/)
naptypes(5,1:4)=(/3,1,2,0/) !?
first=.false.
endif
max_iterations=30
nharderrors=-1
fs2=12000.0/NDOWN
dt2=1.0/fs2
twopi=8.0*atan(1.0)
delfbest=0.
ibest=0
call timer('ft8_down',0)
call ft8_downsample(dd0,newdat,f1,cd0) !Mix f1 to baseband and downsample
call timer('ft8_down',1)
i0=nint((xdt+0.5)*fs2) !Initial guess for start of signal
smax=0.0
do idt=i0-8,i0+8 !Search over +/- one quarter symbol
call sync8d(cd0,idt,ctwk,0,sync)
if(sync.gt.smax) then
smax=sync
ibest=idt
endif
enddo
xdt2=ibest*dt2 !Improved estimate for DT
! Now peak up in frequency
i0=nint(xdt2*fs2)
smax=0.0
do ifr=-5,5 !Search over +/- 2.5 Hz
delf=ifr*0.5
dphi=twopi*delf*dt2
phi=0.0
do i=1,32
ctwk(i)=cmplx(cos(phi),sin(phi))
phi=mod(phi+dphi,twopi)
enddo
call sync8d(cd0,i0,ctwk,1,sync)
if( sync .gt. smax ) then
smax=sync
delfbest=delf
endif
enddo
a=0.0
a(1)=-delfbest
call twkfreq1(cd0,NP2,fs2,a,cd0)
xdt=xdt2
f1=f1+delfbest !Improved estimate of DF
call sync8d(cd0,i0,ctwk,2,sync)
j=0
do k=1,NN
i1=ibest+(k-1)*32
csymb=cmplx(0.0,0.0)
if( i1.ge.1 .and. i1+31 .le. NP2 ) csymb=cd0(i1:i1+31)
call four2a(csymb,32,1,-1,1)
s2(0:7,k)=abs(csymb(1:8))/1e3
enddo
! sync quality check
is1=0
is2=0
is3=0
do k=1,7
ip=maxloc(s2(:,k))
if(icos7(k-1).eq.(ip(1)-1)) is1=is1+1
ip=maxloc(s2(:,k+36))
if(icos7(k-1).eq.(ip(1)-1)) is2=is2+1
ip=maxloc(s2(:,k+72))
if(icos7(k-1).eq.(ip(1)-1)) is3=is3+1
enddo
! hard sync sum - max is 21
nsync=is1+is2+is3
if(nsync .le. 6) then ! bail out
nbadcrc=1
return
endif
j=0
do k=1,NN
if(k.le.7) cycle
if(k.ge.37 .and. k.le.43) cycle
if(k.gt.72) cycle
j=j+1
s1(0:7,j)=s2(0:7,k)
enddo
do j=1,ND
i4=3*j-2
i2=3*j-1
i1=3*j
ps=s1(0:7,j)
r1=max(ps(1),ps(3),ps(5),ps(7))-max(ps(0),ps(2),ps(4),ps(6))
r2=max(ps(2),ps(3),ps(6),ps(7))-max(ps(0),ps(1),ps(4),ps(5))
r4=max(ps(4),ps(5),ps(6),ps(7))-max(ps(0),ps(1),ps(2),ps(3))
bmeta(i4)=r4
bmeta(i2)=r2
bmeta(i1)=r1
bmetap(i4)=r4
bmetap(i2)=r2
bmetap(i1)=r1
if(nQSOProgress .eq. 0 .or. nQSOProgress .eq. 5) then
! When bits 88:115 are set as ap bits, bit 115 lives in symbol 39 along
! with no-ap bits 116 and 117. Take care of metrics for bits 116 and 117.
if(j.eq.39) then ! take care of bits that live in symbol 39
if(apsym(28).lt.0) then
bmetap(i2)=max(ps(2),ps(3))-max(ps(0),ps(1))
bmetap(i1)=max(ps(1),ps(3))-max(ps(0),ps(2))
else
bmetap(i2)=max(ps(6),ps(7))-max(ps(4),ps(5))
bmetap(i1)=max(ps(5),ps(7))-max(ps(4),ps(6))
endif
endif
endif
! When bits 116:143 are set as ap bits, bit 115 lives in symbol 39 along
! with ap bits 116 and 117. Take care of metric for bit 115.
! if(j.eq.39) then ! take care of bit 115
! iii=2*(apsym(29)+1)/2 + (apsym(30)+1)/2 ! known values of bits 116 & 117
! if(iii.eq.0) bmetap(i4)=ps(4)-ps(0)
! if(iii.eq.1) bmetap(i4)=ps(5)-ps(1)
! if(iii.eq.2) bmetap(i4)=ps(6)-ps(2)
! if(iii.eq.3) bmetap(i4)=ps(7)-ps(3)
! endif
! bit 144 lives in symbol 48 and will be 1 if it is set as an ap bit.
! take care of metrics for bits 142 and 143
if(j.eq.48) then ! bit 144 is always 1
bmetap(i4)=max(ps(5),ps(7))-max(ps(1),ps(3))
bmetap(i2)=max(ps(3),ps(7))-max(ps(1),ps(5))
endif
! bit 154 lives in symbol 52 and will be 0 if it is set as an ap bit
! take care of metrics for bits 155 and 156
if(j.eq.52) then ! bit 154 will be 0 if it is set as an ap bit.
bmetap(i2)=max(ps(2),ps(3))-max(ps(0),ps(1))
bmetap(i1)=max(ps(1),ps(3))-max(ps(0),ps(2))
endif
enddo
call normalizebmet(bmeta,3*ND)
call normalizebmet(bmetap,3*ND)
ss=0.84
llr0=2.0*bmeta/(ss*ss)
llra=2.0*bmetap/(ss*ss) ! llr's for use with ap
apmag=4.0
! pass #
!------------------------------
! 1 regular decoding
! 2 erase 24
! 3 erase 48
! 4 ap pass 1
! 5 ap pass 2
! 6 ap pass 3
! 7 ap pass 4, etc.
if(lapon) then
npasses=3+nappasses(nQSOProgress)
else
npasses=3
endif
do ipass=1,npasses
llr=llr0
if(ipass.eq.2) llr(1:24)=0.
if(ipass.eq.3) llr(1:48)=0.
if(ipass.le.3) then
apmask=0
llrap=llr
iaptype=0
endif
if(ipass .gt. 3) then
iaptype=naptypes(nQSOProgress,ipass-3)
if(iaptype.ge.3 .and. (abs(f1-nfqso).gt.napwid .and. abs(f1-nftx).gt.napwid) ) cycle
if(iaptype.eq.1 .or. iaptype.eq.2 ) then ! AP,???,???
apmask=0
apmask(88:115)=1 ! first 28 bits are AP
apmask(144)=1 ! not free text
llrap=llr
if(iaptype.eq.1) llrap(88:115)=apmag*mcq/ss
if(iaptype.eq.2) llrap(88:115)=apmag*apsym(1:28)/ss
llrap(116:117)=llra(116:117)
llrap(142:143)=llra(142:143)
llrap(144)=-apmag/ss
endif
if(iaptype.eq.3) then ! mycall, dxcall, ???
apmask=0
apmask(88:115)=1 ! mycall
apmask(116:143)=1 ! hiscall
apmask(144)=1 ! not free text
llrap=llr
llrap(88:143)=apmag*apsym(1:56)/ss
llrap(144)=-apmag/ss
endif
if(iaptype.eq.4 .or. iaptype.eq.5 .or. iaptype.eq.6) then
apmask=0
apmask(88:115)=1 ! mycall
apmask(116:143)=1 ! hiscall
apmask(144:159)=1 ! RRR or 73 or RR73
llrap=llr
llrap(88:143)=apmag*apsym(1:56)/ss
if(iaptype.eq.4) llrap(144:159)=apmag*mrrr/ss
if(iaptype.eq.5) llrap(144:159)=apmag*m73/ss
if(iaptype.eq.6) llrap(144:159)=apmag*mrr73/ss
endif
if(iaptype.eq.7) then ! ???, dxcall, ???
apmask=0
apmask(116:143)=1 ! hiscall
apmask(144)=1 ! not free text
llrap=llr
llrap(115)=llra(115)
llrap(116:143)=apmag*apsym(29:56)/ss
llrap(144)=-apmag/ss
endif
endif
cw=0
call timer('bpd174 ',0)
call bpdecode174(llrap,apmask,max_iterations,decoded,cw,nharderrors, &
niterations)
call timer('bpd174 ',1)
dmin=0.0
if(ndepth.eq.3 .and. nharderrors.lt.0) then
ndeep=3
if(abs(nfqso-f1).le.napwid .or. abs(nftx-f1).le.napwid) then
if((ipass.eq.2 .or. ipass.eq.3) .and. .not.nagain) then
ndeep=3
else
ndeep=4
endif
endif
if(nagain) ndeep=5
call timer('osd174 ',0)
call osd174(llrap,apmask,ndeep,decoded,cw,nharderrors,dmin)
call timer('osd174 ',1)
endif
nbadcrc=1
message=' '
xsnr=-99.0
if(count(cw.eq.0).eq.174) cycle !Reject the all-zero codeword
if(any(decoded(73:75).ne.0)) cycle !Reject if any of the 3 extra bits are nonzero
if(nharderrors.ge.0 .and. nharderrors+dmin.lt.60.0 .and. &
.not.(sync.lt.2.0 .and. nharderrors.gt.35) .and. &
.not.(ipass.gt.1 .and. nharderrors.gt.39) .and. &
.not.(ipass.eq.3 .and. nharderrors.gt.30) &
) then
call chkcrc12a(decoded,nbadcrc)
else
nharderrors=-1
cycle
endif
if(nbadcrc.eq.0) then
call extractmessage174(decoded,message,ncrcflag,recent_calls,nrecent)
call genft8(message,mygrid6,bcontest,msgsent,msgbits,itone)
if(lsubtract) call subtractft8(dd0,itone,f1,xdt2)
xsig=0.0
xnoi=0.0
do i=1,79
xsig=xsig+s2(itone(i),i)**2
ios=mod(itone(i)+4,7)
xnoi=xnoi+s2(ios,i)**2
enddo
xsnr=0.001
if(xnoi.gt.0 .and. xnoi.lt.xsig) xsnr=xsig/xnoi-1.0
xsnr=10.0*log10(xsnr)-27.0
!###
xsnr2=db(xsig/xbase - 1.0) - 32.0
! write(52,3052) f1,xdt,xsig,xnoi,xbase,xsnr,xsnr2
!3052 format(7f10.2)
xsnr=xsnr2
!###
if(xsnr .lt. -24.0) xsnr=-24.0
return
endif
enddo
return
end subroutine ft8b
subroutine normalizebmet(bmet,n)
real bmet(n)
bmetav=sum(bmet)/real(n)
bmet2av=sum(bmet*bmet)/real(n)
var=bmet2av-bmetav*bmetav
if( var .gt. 0.0 ) then
bmetsig=sqrt(var)
else
bmetsig=sqrt(bmet2av)
endif
bmet=bmet/bmetsig
return
end subroutine normalizebmet