WSJT-X/map65/libm65/astro0.f90
Bill Somerville 280c8344cd
Move project files to map65 sub-directory
Preparation for merging with the wsjtx project repository.
2021-04-09 13:57:41 +01:00

82 lines
2.2 KiB
Fortran

subroutine astro0(nyear,month,nday,uth8,nfreq,mygrid,hisgrid, &
AzSun8,ElSun8,AzMoon8,ElMoon8,AzMoonB8,ElMoonB8,ntsky,ndop,ndop00, &
dbMoon8,RAMoon8,DecMoon8,HA8,Dgrd8,sd8,poloffset8,xnr8,dfdt,dfdt0, &
width1,width2,w501,w502,xlst8)
parameter (DEGS=57.2957795130823d0)
character*6 mygrid,hisgrid
real*8 AzSun8,ElSun8,AzMoon8,ElMoon8,AzMoonB8,ElMoonB8
real*8 dbMoon8,RAMoon8,DecMoon8,HA8,Dgrd8,xnr8,dfdt,dfdt0,dt
real*8 sd8,poloffset8,day8,width1,width2,w501,w502,xlst8
real*8 uth8
data uth8z/0.d0/
save
uth=uth8
call astro(nyear,month,nday,uth,nfreq,hisgrid,2,1, &
AzSun,ElSun,AzMoon,ElMoon,ntsky,doppler00,doppler, &
dbMoon,RAMoon,DecMoon,HA,Dgrd,sd,poloffset,xnr, &
day,xlon2,xlat2,xlst)
AzMoonB8=AzMoon
ElMoonB8=ElMoon
call astro(nyear,month,nday,uth,nfreq,mygrid,1,1, &
AzSun,ElSun,AzMoon,ElMoon,ntsky,doppler00,doppler, &
dbMoon,RAMoon,DecMoon,HA,Dgrd,sd,poloffset,xnr, &
day,xlon1,xlat1,xlst)
day8=day
xlst8=xlst
call tm2(day8,xlat1,xlon1,xl1,b1)
call tm2(day8,xlat2,xlon2,xl2,b2)
call tm2(day8+1.d0/1440.0,xlat1,xlon1,xl1a,b1a)
call tm2(day8+1.d0/1440.0,xlat2,xlon2,xl2a,b2a)
fghz=0.001*nfreq
dldt1=DEGS*(xl1a-xl1)
dbdt1=DEGS*(b1a-b1)
dldt2=DEGS*(xl2a-xl2)
dbdt2=DEGS*(b2a-b2)
rate1=2.0*sqrt(dldt1**2 + dbdt1**2)
width1=0.5*6741*fghz*rate1
rate2=sqrt((dldt1+dldt2)**2 + (dbdt1+dbdt2)**2)
width2=0.5*6741*fghz*rate2
fbend=0.7
a2=0.0045*log(fghz/fbend)/log(1.05)
if(fghz.lt.fbend) a2=0.0
f50=0.19 * (fghz/fbend)**a2
if(f50.gt.1.0) f50=1.0
w501=f50*width1
w502=f50*width2
AzSun8=AzSun
ElSun8=ElSun
AzMoon8=AzMoon
ElMoon8=ElMoon
dbMoon8=dbMoon
RAMoon8=RAMoon/15.0
DecMoon8=DecMoon
HA8=HA
Dgrd8=Dgrd
sd8=sd
poloffset8=poloffset
xnr8=xnr
ndop=nint(doppler)
ndop00=nint(doppler00)
if(uth8z.eq.0.d0) then
uth8z=uth8-1.d0/3600.d0
dopplerz=doppler
doppler00z=doppler00
endif
dt=60.0*(uth8-uth8z)
if(dt.le.0) dt=1.d0/60.d0
dfdt=(doppler-dopplerz)/dt
dfdt0=(doppler00-doppler00z)/dt
uth8z=uth8
dopplerz=doppler
doppler00z=doppler00
return
end subroutine astro0