mirror of https://github.com/saitohirga/WSJT-X.git
87 lines
3.0 KiB
Fortran
87 lines
3.0 KiB
Fortran
subroutine MoonDop(nyear,month,nday,uth4,lon4,lat4,RAMoon4,
|
|
+ DecMoon4,LST4,HA4,AzMoon4,ElMoon4,ldeg4,bdeg4,vr4,dist4)
|
|
|
|
implicit real*8 (a-h,o-z)
|
|
real*4 uth4 !UT in hours
|
|
real*4 lon4 !West longitude, degrees
|
|
real*4 lat4 !Latitude, degrees
|
|
real*4 RAMoon4 !Topocentric RA of moon, hours
|
|
real*4 DecMoon4 !Topocentric Dec of Moon, degrees
|
|
real*4 LST4 !Locat sidereal time, hours
|
|
real*4 HA4 !Local Hour angle, degrees
|
|
real*4 AzMoon4 !Topocentric Azimuth of moon, degrees
|
|
real*4 ElMoon4 !Topocentric Elevation of moon, degrees
|
|
real*4 ldeg4 !Galactic longitude of moon, degrees
|
|
real*4 bdeg4 !Galactic latitude of moon, degrees
|
|
real*4 vr4 !Radial velocity of moon wrt obs, km/s
|
|
real*4 dist4 !Echo time, seconds
|
|
|
|
real*8 LST
|
|
real*8 RME(6) !Vector from Earth center to Moon
|
|
real*8 RAE(6) !Vector from Earth center to Obs
|
|
real*8 RMA(6) !Vector from Obs to Moon
|
|
real*8 pvsun(6)
|
|
real*8 rme0(6)
|
|
real*8 lrad
|
|
logical km,bary
|
|
|
|
common/stcomx/km,bary,pvsun
|
|
data rad/57.2957795130823d0/,twopi/6.28310530717959d0/
|
|
|
|
pi=0.5d0*twopi
|
|
pio2=0.5d0*pi
|
|
km=.true.
|
|
dlat=lat4/rad
|
|
dlong1=lon4/rad
|
|
elev1=200.d0
|
|
call geocentric(dlat,elev1,dlat1,erad1)
|
|
|
|
dt=100.d0 !For numerical derivative, in seconds
|
|
UT=uth4
|
|
|
|
C NB: geodetic latitude used here, but geocentric latitude used when
|
|
C determining Earth-rotation contribution to Doppler.
|
|
|
|
call moon2(nyear,month,nDay,UT-dt/3600.d0,dlong1*rad,dlat*rad,
|
|
+ RA,Dec,topRA,topDec,LST,HA,Az,El,dist)
|
|
call toxyz(RA/rad,Dec/rad,dist,rme0) !Convert to rectangular coords
|
|
|
|
call moon2(nyear,month,nDay,UT,dlong1*rad,dlat*rad,
|
|
+ RA,Dec,topRA,topDec,LST,HA,Az0,El0,dist)
|
|
call toxyz(RA/rad,Dec/rad,dist,rme) !Convert to rectangular coords
|
|
|
|
phi=LST*twopi/24.d0
|
|
call toxyz(phi,dlat1,erad1,rae) !Gencentric numbers used here!
|
|
radps=twopi/(86400.d0/1.002737909d0)
|
|
rae(4)=-rae(2)*radps !Vel of Obs wrt Earth center
|
|
rae(5)=rae(1)*radps
|
|
rae(6)=0.d0
|
|
|
|
do i=1,3
|
|
rme(i+3)=(rme(i)-rme0(i))/dt
|
|
rma(i)=rme(i)-rae(i)
|
|
rma(i+3)=rme(i+3)-rae(i+3)
|
|
enddo
|
|
|
|
call fromxyz(rma,alpha1,delta1,dtopo0) !Get topocentric coords
|
|
vr=dot(rma(4),rma)/dtopo0
|
|
|
|
rarad=RA/rad
|
|
decrad=Dec/rad
|
|
call dcoord(4.635594495d0,-0.504691042d0,3.355395488d0,
|
|
+ 0.478220215d0,rarad,decrad,lrad,brad)
|
|
|
|
RAMoon4=topRA
|
|
DecMoon4=topDec
|
|
LST4=LST
|
|
HA4=HA
|
|
AzMoon4=Az
|
|
ElMoon4=El
|
|
ldeg4=lrad*rad
|
|
bdeg4=brad*rad
|
|
vr4=vr
|
|
dist4=dist
|
|
|
|
return
|
|
end
|