Thanks for the code, it was quite useful to read ODF data files from several missions. On the other hand, I found several bugs (maybe ok for LP but not for other missions?), in particular regarding the reading of the Ramps (the first ramp table was sistematically skipped) and of the Reference Frequency (the formula was just wrong).
Here below is an updated working version in Fortran (works with gfortran gcc version 4.7.2 20130108 on linux , should work also on other machines and compilers). It has been succesfully tested on GRAIL, Messenger and Mars Odyssey data. Hope it may be useful to other people!
( for questions or comments, please write me at stefano.bertone"at"aiub.unibe.ch )
PROGRAM ReadODF
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C C
C This program will transform the ODF format (described by the interface C
C file trk-2-18) to ASCII records C
C C
C Created : SUN YU., 2010 - Shandong University of Science and Technology, Qingdao 266510, Shanddong Province, China C
C C
C Modifications : S.Bertone (2015) - AIUB, UniBern (CH): correction of reference frequency computation and ramps reading
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C ------------ Begin of Data Type Definition------------------
IMPLICIT NONE
Integer*4 i,R,Iramp,ii
Integer*4 Idat_four(10),IRampG_four(10),IRampGH_four(10)
Integer*4 IOrbitG_four(10),IOrbitGH_four(10)
Real*8 RRange_M,RM_M,Rmout(19)
Integer*8 IOrbitG_eight(2)
Character*50 PrefixInputfile,Inputfile,TrimInputfile
Character*8 Char_eight(2)
Character*20 Char_twenty(2)
Logical Flag,Alive,exist
C -------------End of Data Type Definition--------------------
C ---------------Format-----------------
105 Format(F15.3,F15.10,F20.10,3I6,I4,2I5,6(1x,I3),1x,F17.3,I5,2I9)
c108 Format(I15,f6.3,f22.10,2I4,I20,f20.5,F22.10,I4)
c109 Format(I10,I10,3I5,2F25.10)
c110 Format(2I10,2I5,2D25.14)
C ---------------------------------------
C Begin of executable codes
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C Open binary files C
C ODF files have eight independent data sections. All of them are C
C in the form of binary,the format description is included in C
C the interface file "trk-2-18" which is also provided together C
C with the data. C
C C
C * Note C
C To read this file, you need to notice what kind of work station C
C or computer you are using in oder to figure out how the binary C
C files are handled on your machine, it is either Big_endian(MSB) or C
C Little_endian(LSB). For example, if you are using a PC, it would be C
C Little_endian, but if it is a SUN work station, there is a good C
C chance that it is Big_endian. C
C C
C In this case, we are running the program on a PC and we need to be C
C aware that it is Little_endian. However, The LP ODF files cannot C
C be recognized as you can see in the interface file that the data C
C type is MSB_INTEGER. If you are using a Big_endian machine, there C
C should be no problem. C
C C
C * How to solve this problem C
C This problem can be easily solved by adding the OPTION C
C "conver='big_endian'" in the OPEN STATMENT C
C C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C Inputfile='./LPODF/lpodfcase1'
Write(6,*) ' ***********************'
Write(6,*)
Write(6,*) ' PROGRAM READ ODF '
Write(6,*)
Write(6,*) ' ***********************'
Write(6,*)
Write(6,*)
Write(6,*) ' -------------- INPUTFILE-------------'
Write(6,*) ' '
Write(6,*) ' Plese Select Inputfiles '
Write(6,*) ' From lpodfcase1 to 8 '
Write(6,*) ' '
Write(6,*) ' -------------------------------------'
Write(6,*)
Write(6,*)
Write(6,*) '-----------------------'
Write(6,*) ' The Input file is:'
C Read (*,*) Inputfile
Inputfile='2340341a.odf'
PrefixInputfile='./'//Inputfile
TrimInputfile=PrefixInputfile(1:Len(Trim(PrefixInputfile)))
Write(6,*) '------------------------'
Write(6,*) 'The ODF file selected is'
write(*,*) TrimInputfile
Inquire(file=TrimInputfile,exist=Alive)
If (alive) Then
Write(6,*) ' ----------------READIND--------------'
Write(6,*)
Write(6,*) ' Start to read file ','Inputfile',
1 ' '
Write(6,*)
Write(6,*) ' -------------------------------------'
Flag=Alive
Else
Write(6,*) ' -----------------ERROR---------------'
Write(6,*)
Write(6,*) ' The Inputfile dose not exist '
Write(6,*) ' Please check the Inputfile '
Write(6,*)
Write(6,*) ' -------------------------------------'
Stop
Endif
If (Flag) Then
Open(10,file=TrimInputfile,convert='big_endian',
1 form='unformatted', access='direct',recl=36)
C Open the OUTPUT files
Open(20,file='2340341a.asc')
C First, the first 4 records we be read and write out
C !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
C Record 1:ODF lable group header
Read(10,rec=1) (Idat_four(i),i=1,9)
Write(20,*) 'LPODF ASCII OUTPUT:'
Write(20,*) '=====================================',
1 '=============='
Write(20,*) '----------Label Group: Header Record-',
1 '--------------'
Write(20,*) 'Prime_Key Second_Key Log_Rec_Len',
1 'Gp_St_Pkt_No'
Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (Idat_four(i),i=1,4)
Write(20,*) '----------------------Data-----------',
1 '--------------'
Write(6,*)
Write(6,*) ' Label Group: Header Record'
Endif
C Record 2: ODF lable group
Read(10,rec=2) (Char_eight(i),i=1,2),(Idat_four(i),i=1,5)
Write(20,*) 'SystemID ProgramID SCID CrDate CrTime
1 FRefDate FRefTime'
Write(20,'(A10,A9,I6,I8,X,I8,3X,I8,3X,I6.6)')
1 (Char_eight(i),i=1,2),(Idat_four(i),i=1,5)
Write(20,*) '======================================',
1 '=============='
Write(6,*)
Write(6,*) ' Label Group Data'
C Record 3:ODF identifier goup header
Read(10,rec=3) (Idat_four(i),i=1,9)
Write(20,*) '--------Identifier Group: Hearder Record-',
1 '--------------'
Write(20,*) 'Prime_Key Second_Key Log_Rec_Len',
1 'Gp_St_Pkt_No'
Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (Idat_four(i),i=1,4)
Write(20,*) '----------------------Data-----------',
1 '--------------'
Write(6,*)
Write(6,*) ' Identifier Group:Header Record'
C Record 4: ODF identifier goup data
Read(10,rec=4) (Char_eight(i),i=1,2),Char_twenty(1)
Write(20,*) ' Item_1 Item_2 Item_3'
Write(20,'(4X,A8,3X,A8,5X,A20)')
1 (Char_eight(i),i=1,2),Char_twenty(1)
Write(20,*) '======================================',
1 '=============='
Write(6,*)
Write(6,*) ' Identifier Group Data'
C !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
R=5
Do While (.True.) !This program will never stop
Read(10,rec=R) Idat_four(1) !unless you tell them to
C Go back to check when new Index is found (2030 in this case => should go into ramps)
4444 CONTINUE
If (Idat_four(1).EQ.-1) Then !-1 means the EOF
Read(10,rec=R) (Idat_four(i),i=1,9) !we always have to figure whether
!it's the end of the data file
Write(20,*)'--------End of File Group: Hearder Record',
1 '------------'
Write(20,*) 'Prime_Key Second_Key Log_Rec_Len',
1 'Gp_St_Pkt_No'
Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (Idat_four(i),i=1,4)
Write(20,*) '----------------------Data-----------',
1 '--------------'
Write(6,*)
Write(6,*) ' End of the ODF file'
Goto 9999 !if it is the end of the data file
!then read the End of File Group
!and write it done, after that,exit
C!!!!!!!!!!!!!!!!!!!!!!! Reading the Orbit Data Group !!!!!!!!!!!!!!!!!!!!!!
Elseif (Idat_four(1).EQ.109) Then !find out if it is the Orbit Data
!Group.
3333 Read(10,rec=R) (IOrbitGH_four(i),i=1,9)
Write(20,*) '----------Orbit Data Group: Header Record',
1 '------------'
Write(20,*) 'Prime_Key Second_Key Log_Rec_Len
1Gp_St_Pkt_No'
Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (IOrbitGH_four(i),i=1,4)
Write(20,*) '----------------------Data-----------',
1 '--------------'
Write(6,*)
Write(6,*) ' Orbit Data Group: Header'
Write(6,*)
Write(6,*) ' Orbit Data Group'
Write(20,'(A12,A15,A20,A10,2A6,A4,A6,7(A3,1x),A17,3A8)')
1 'Time Tag', 'DL_delay','Observable','Fmt','DSSr','DSSt','Net',
2 'D_Typ','DL','UL','Ex','V','2S','SC','17',
3 'Reference Freq','Item_20','Item_21','Item_22'
R=R+1 !if it is the Orbit Data Group,
!write out the Header first. after
!the Header is the data group,
!read these data and write out
!till the EOF
Do While (.True.)
Read(10,rec=R) Idat_four(1)
If (Idat_four(1).EQ.-1) Then
Read(10,rec=R) (Idat_four(i),i=1,9)
Write(20,*)'--------End of file Group: Header Record',
1 '------------'
Write(20,*) 'Prime_Key Second_Key Log_Rec_Len
1 Gp_St_Pkt_No'
Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (Idat_four(i),i=1,4)
Write(20,*) '----------------------Data-----------',
1 '--------------'
Write(6,*)
Write(6,*) ' End of the ODF file'
Goto 9999
Elseif (Idat_four(1).EQ.109) Then !this is in case there is more
!than one Orbit Data Group,
!though, there should be only one
Goto 3333
Elseif (Idat_four(1).EQ.2030) Then
Goto 4444
Else
Read(10,rec=R) (IOrbitG_four(i),i=1,5),(IOrbitG_eight(i),i=1,2)
Write(20,105)
1 IOrbitG_four(1)+ibits(IOrbitG_four(2),22,10)*1.D-3, !Record Time Tag
3 ibits(IOrbitG_four(2),0,22)*1.D-9, !Downlink_delay
4 IOrbitG_four(3)+IOrbitG_four(4)*1.D-9, !Observable
5 ibits(IOrbitG_four(5),29,3), !Format ID=2
5 ibits(IOrbitG_four(5),22,7), !Receiving Station ID NO.--DSSr
5 ibits(IOrbitG_four(5),15,7), !Transmittiong Station ID NO.--DSSt
5 ibits(IOrbitG_four(5),13,2), !Network ID for Transmitting Station
5 ibits(IOrbitG_four(5),7,6), !Data Type ID.--D_Typ
5 ibits(IOrbitG_four(5),5,2), !Downlink band ID.--DL
5 ibits(IOrbitG_four(5),3,2), !Uplink band ID.--UL
5 ibits(IOrbitG_four(5),1,2), !Exciter band ID.--Ex
5 ibits(IOrbitG_four(5),0,1), !Data Validity Indicator (0 for good)
6 ibits(IOrbitG_eight(1),57,7), !2nd Receiving station ID
6 ibits(IOrbitG_eight(1),47,10), !Spacecraft ID
6 ibits(IOrbitG_eight(1),46,1), !Receiver/Exciter Independet flag(1:yes)
6 (ibits(IOrbitG_eight(1),24,22)*(2.d0**24)+
6 ibits(IOrbitG_eight(1),0,24))*1.d-3, !Reference Frequency
7 ibits(IOrbitG_eight(2),44,20), !
7 ibits(IOrbitG_eight(2),22,22), !Compression Time s/100
7 ibits(IOrbitG_eight(2),0,22) !
Endif
R=R+1
Enddo
C the most important data needed in
C the ODF file is the Orbit Data Groups
C and there should be only one of them
C in each ODF file.
C!!!!!!!!!!!!!!!!!!! Reading the Ramp Group !!!!!!!!!!!!!!!!!!!!!!!!!!
Elseif (Idat_four(1).EQ.2030) Then !if it is not the EOF, then find
!out if it is the Ramp Group.
Iramp=1
2222 Read(10,rec=R) (IRampGH_four(i),i=1,9)
Write(20,*) '-----------Ramp Group: Header Record-',
1 '--------------'
Write(20,*) 'Prime_Key Second_Key Log_Rec_Len
1 Gp_St_Pkt_No'
Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (IRampGH_four(i),i=1,4)
Write(20,*) '----------------------Data-----------',
1 '--------------'
Write(6,*)
Write(6,*) ' Ramp Group',Iramp
Iramp=Iramp+1
Write(20,'(A5,A23,A18,2A21)')
1 'DSS', 'Ramp Start Time','Ramp Rate',
2 'Start Frequency','Ramp End Time'
R=R+1 !if it is the Ramp Group, then
C write out the Header first. after
C the Header is the data group,
C read these ramp data and write out
C till the EOF
Do While (.True.)
Read(10,rec=R) Idat_four(1)
If (Idat_four(1).EQ.-1) Then
Read(10,rec=R) (Idat_four(i),i=1,9)
Write(20,*)'--------End of file Group: Header Record',
1 '-----------'
Write(20,*) 'Prime_Key Second_Key Log_Rec_Len',
1 'Gp_St_Pkt_No'
Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (Idat_four(i),i=1,4)
Write(20,*) '----------------------Data-----------',
1 '--------------'
Write(6,*)
Write(6,*) ' End of the ODF file'
Goto 9999
Elseif (Idat_four(1).EQ.2030) Then !there is more than one ramp group
!in an ODF file.
Goto 2222
Else
Read(10,rec=R) (IRampG_four(i),i=1,9)
Write(20,'(I4,F25.10,F18.10,2F23.10)')
1 ibits(IrampG_four(5),0,10),
2 (IRampG_four(1)+IRampG_four(2)*1.D-9),
3 IRampG_four(3)+IRampG_four(4)*1.D-9,
4 ibits(IRampG_four(5),10,22)*1.D9+IRampG_four(6)+
4 IRampG_four(7)*1.D-9,
5 (IRampG_four(8)+IRampG_four(9)*1.D-9)
Endif
R=R+1
Enddo
Endif
R=R+1
Enddo
Close(10)
Close(20)
9999 Continue
End Program
A fortran program: convert the LP ODF data to ASCII records
in For data users
Posted
Thanks for the code, it was quite useful to read ODF data files from several missions. On the other hand, I found several bugs (maybe ok for LP but not for other missions?), in particular regarding the reading of the Ramps (the first ramp table was sistematically skipped) and of the Reference Frequency (the formula was just wrong).
Here below is an updated working version in Fortran (works with gfortran gcc version 4.7.2 20130108 on linux , should work also on other machines and compilers). It has been succesfully tested on GRAIL, Messenger and Mars Odyssey data. Hope it may be useful to other people!
( for questions or comments, please write me at stefano.bertone"at"aiub.unibe.ch )
PROGRAM ReadODF CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC C C C This program will transform the ODF format (described by the interface C C file trk-2-18) to ASCII records C C C C Created : SUN YU., 2010 - Shandong University of Science and Technology, Qingdao 266510, Shanddong Province, China C C C C Modifications : S.Bertone (2015) - AIUB, UniBern (CH): correction of reference frequency computation and ramps reading CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC C ------------ Begin of Data Type Definition------------------ IMPLICIT NONE Integer*4 i,R,Iramp,ii Integer*4 Idat_four(10),IRampG_four(10),IRampGH_four(10) Integer*4 IOrbitG_four(10),IOrbitGH_four(10) Real*8 RRange_M,RM_M,Rmout(19) Integer*8 IOrbitG_eight(2) Character*50 PrefixInputfile,Inputfile,TrimInputfile Character*8 Char_eight(2) Character*20 Char_twenty(2) Logical Flag,Alive,exist C -------------End of Data Type Definition-------------------- C ---------------Format----------------- 105 Format(F15.3,F15.10,F20.10,3I6,I4,2I5,6(1x,I3),1x,F17.3,I5,2I9) c108 Format(I15,f6.3,f22.10,2I4,I20,f20.5,F22.10,I4) c109 Format(I10,I10,3I5,2F25.10) c110 Format(2I10,2I5,2D25.14) C --------------------------------------- C Begin of executable codes CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC C Open binary files C C ODF files have eight independent data sections. All of them are C C in the form of binary,the format description is included in C C the interface file "trk-2-18" which is also provided together C C with the data. C C C C * Note C C To read this file, you need to notice what kind of work station C C or computer you are using in oder to figure out how the binary C C files are handled on your machine, it is either Big_endian(MSB) or C C Little_endian(LSB). For example, if you are using a PC, it would be C C Little_endian, but if it is a SUN work station, there is a good C C chance that it is Big_endian. C C C C In this case, we are running the program on a PC and we need to be C C aware that it is Little_endian. However, The LP ODF files cannot C C be recognized as you can see in the interface file that the data C C type is MSB_INTEGER. If you are using a Big_endian machine, there C C should be no problem. C C C C * How to solve this problem C C This problem can be easily solved by adding the OPTION C C "conver='big_endian'" in the OPEN STATMENT C C C CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC C Inputfile='./LPODF/lpodfcase1' Write(6,*) ' ***********************' Write(6,*) Write(6,*) ' PROGRAM READ ODF ' Write(6,*) Write(6,*) ' ***********************' Write(6,*) Write(6,*) Write(6,*) ' -------------- INPUTFILE-------------' Write(6,*) ' ' Write(6,*) ' Plese Select Inputfiles ' Write(6,*) ' From lpodfcase1 to 8 ' Write(6,*) ' ' Write(6,*) ' -------------------------------------' Write(6,*) Write(6,*) Write(6,*) '-----------------------' Write(6,*) ' The Input file is:' C Read (*,*) Inputfile Inputfile='2340341a.odf' PrefixInputfile='./'//Inputfile TrimInputfile=PrefixInputfile(1:Len(Trim(PrefixInputfile))) Write(6,*) '------------------------' Write(6,*) 'The ODF file selected is' write(*,*) TrimInputfile Inquire(file=TrimInputfile,exist=Alive) If (alive) Then Write(6,*) ' ----------------READIND--------------' Write(6,*) Write(6,*) ' Start to read file ','Inputfile', 1 ' ' Write(6,*) Write(6,*) ' -------------------------------------' Flag=Alive Else Write(6,*) ' -----------------ERROR---------------' Write(6,*) Write(6,*) ' The Inputfile dose not exist ' Write(6,*) ' Please check the Inputfile ' Write(6,*) Write(6,*) ' -------------------------------------' Stop Endif If (Flag) Then Open(10,file=TrimInputfile,convert='big_endian', 1 form='unformatted', access='direct',recl=36) C Open the OUTPUT files Open(20,file='2340341a.asc') C First, the first 4 records we be read and write out C !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! C Record 1:ODF lable group header Read(10,rec=1) (Idat_four(i),i=1,9) Write(20,*) 'LPODF ASCII OUTPUT:' Write(20,*) '=====================================', 1 '==============' Write(20,*) '----------Label Group: Header Record-', 1 '--------------' Write(20,*) 'Prime_Key Second_Key Log_Rec_Len', 1 'Gp_St_Pkt_No' Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (Idat_four(i),i=1,4) Write(20,*) '----------------------Data-----------', 1 '--------------' Write(6,*) Write(6,*) ' Label Group: Header Record' Endif C Record 2: ODF lable group Read(10,rec=2) (Char_eight(i),i=1,2),(Idat_four(i),i=1,5) Write(20,*) 'SystemID ProgramID SCID CrDate CrTime 1 FRefDate FRefTime' Write(20,'(A10,A9,I6,I8,X,I8,3X,I8,3X,I6.6)') 1 (Char_eight(i),i=1,2),(Idat_four(i),i=1,5) Write(20,*) '======================================', 1 '==============' Write(6,*) Write(6,*) ' Label Group Data' C Record 3:ODF identifier goup header Read(10,rec=3) (Idat_four(i),i=1,9) Write(20,*) '--------Identifier Group: Hearder Record-', 1 '--------------' Write(20,*) 'Prime_Key Second_Key Log_Rec_Len', 1 'Gp_St_Pkt_No' Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (Idat_four(i),i=1,4) Write(20,*) '----------------------Data-----------', 1 '--------------' Write(6,*) Write(6,*) ' Identifier Group:Header Record' C Record 4: ODF identifier goup data Read(10,rec=4) (Char_eight(i),i=1,2),Char_twenty(1) Write(20,*) ' Item_1 Item_2 Item_3' Write(20,'(4X,A8,3X,A8,5X,A20)') 1 (Char_eight(i),i=1,2),Char_twenty(1) Write(20,*) '======================================', 1 '==============' Write(6,*) Write(6,*) ' Identifier Group Data' C !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! R=5 Do While (.True.) !This program will never stop Read(10,rec=R) Idat_four(1) !unless you tell them to C Go back to check when new Index is found (2030 in this case => should go into ramps) 4444 CONTINUE If (Idat_four(1).EQ.-1) Then !-1 means the EOF Read(10,rec=R) (Idat_four(i),i=1,9) !we always have to figure whether !it's the end of the data file Write(20,*)'--------End of File Group: Hearder Record', 1 '------------' Write(20,*) 'Prime_Key Second_Key Log_Rec_Len', 1 'Gp_St_Pkt_No' Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (Idat_four(i),i=1,4) Write(20,*) '----------------------Data-----------', 1 '--------------' Write(6,*) Write(6,*) ' End of the ODF file' Goto 9999 !if it is the end of the data file !then read the End of File Group !and write it done, after that,exit C!!!!!!!!!!!!!!!!!!!!!!! Reading the Orbit Data Group !!!!!!!!!!!!!!!!!!!!!! Elseif (Idat_four(1).EQ.109) Then !find out if it is the Orbit Data !Group. 3333 Read(10,rec=R) (IOrbitGH_four(i),i=1,9) Write(20,*) '----------Orbit Data Group: Header Record', 1 '------------' Write(20,*) 'Prime_Key Second_Key Log_Rec_Len 1Gp_St_Pkt_No' Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (IOrbitGH_four(i),i=1,4) Write(20,*) '----------------------Data-----------', 1 '--------------' Write(6,*) Write(6,*) ' Orbit Data Group: Header' Write(6,*) Write(6,*) ' Orbit Data Group' Write(20,'(A12,A15,A20,A10,2A6,A4,A6,7(A3,1x),A17,3A8)') 1 'Time Tag', 'DL_delay','Observable','Fmt','DSSr','DSSt','Net', 2 'D_Typ','DL','UL','Ex','V','2S','SC','17', 3 'Reference Freq','Item_20','Item_21','Item_22' R=R+1 !if it is the Orbit Data Group, !write out the Header first. after !the Header is the data group, !read these data and write out !till the EOF Do While (.True.) Read(10,rec=R) Idat_four(1) If (Idat_four(1).EQ.-1) Then Read(10,rec=R) (Idat_four(i),i=1,9) Write(20,*)'--------End of file Group: Header Record', 1 '------------' Write(20,*) 'Prime_Key Second_Key Log_Rec_Len 1 Gp_St_Pkt_No' Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (Idat_four(i),i=1,4) Write(20,*) '----------------------Data-----------', 1 '--------------' Write(6,*) Write(6,*) ' End of the ODF file' Goto 9999 Elseif (Idat_four(1).EQ.109) Then !this is in case there is more !than one Orbit Data Group, !though, there should be only one Goto 3333 Elseif (Idat_four(1).EQ.2030) Then Goto 4444 Else Read(10,rec=R) (IOrbitG_four(i),i=1,5),(IOrbitG_eight(i),i=1,2) Write(20,105) 1 IOrbitG_four(1)+ibits(IOrbitG_four(2),22,10)*1.D-3, !Record Time Tag 3 ibits(IOrbitG_four(2),0,22)*1.D-9, !Downlink_delay 4 IOrbitG_four(3)+IOrbitG_four(4)*1.D-9, !Observable 5 ibits(IOrbitG_four(5),29,3), !Format ID=2 5 ibits(IOrbitG_four(5),22,7), !Receiving Station ID NO.--DSSr 5 ibits(IOrbitG_four(5),15,7), !Transmittiong Station ID NO.--DSSt 5 ibits(IOrbitG_four(5),13,2), !Network ID for Transmitting Station 5 ibits(IOrbitG_four(5),7,6), !Data Type ID.--D_Typ 5 ibits(IOrbitG_four(5),5,2), !Downlink band ID.--DL 5 ibits(IOrbitG_four(5),3,2), !Uplink band ID.--UL 5 ibits(IOrbitG_four(5),1,2), !Exciter band ID.--Ex 5 ibits(IOrbitG_four(5),0,1), !Data Validity Indicator (0 for good) 6 ibits(IOrbitG_eight(1),57,7), !2nd Receiving station ID 6 ibits(IOrbitG_eight(1),47,10), !Spacecraft ID 6 ibits(IOrbitG_eight(1),46,1), !Receiver/Exciter Independet flag(1:yes) 6 (ibits(IOrbitG_eight(1),24,22)*(2.d0**24)+ 6 ibits(IOrbitG_eight(1),0,24))*1.d-3, !Reference Frequency 7 ibits(IOrbitG_eight(2),44,20), ! 7 ibits(IOrbitG_eight(2),22,22), !Compression Time s/100 7 ibits(IOrbitG_eight(2),0,22) ! Endif R=R+1 Enddo C the most important data needed in C the ODF file is the Orbit Data Groups C and there should be only one of them C in each ODF file. C!!!!!!!!!!!!!!!!!!! Reading the Ramp Group !!!!!!!!!!!!!!!!!!!!!!!!!! Elseif (Idat_four(1).EQ.2030) Then !if it is not the EOF, then find !out if it is the Ramp Group. Iramp=1 2222 Read(10,rec=R) (IRampGH_four(i),i=1,9) Write(20,*) '-----------Ramp Group: Header Record-', 1 '--------------' Write(20,*) 'Prime_Key Second_Key Log_Rec_Len 1 Gp_St_Pkt_No' Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (IRampGH_four(i),i=1,4) Write(20,*) '----------------------Data-----------', 1 '--------------' Write(6,*) Write(6,*) ' Ramp Group',Iramp Iramp=Iramp+1 Write(20,'(A5,A23,A18,2A21)') 1 'DSS', 'Ramp Start Time','Ramp Rate', 2 'Start Frequency','Ramp End Time' R=R+1 !if it is the Ramp Group, then C write out the Header first. after C the Header is the data group, C read these ramp data and write out C till the EOF Do While (.True.) Read(10,rec=R) Idat_four(1) If (Idat_four(1).EQ.-1) Then Read(10,rec=R) (Idat_four(i),i=1,9) Write(20,*)'--------End of file Group: Header Record', 1 '-----------' Write(20,*) 'Prime_Key Second_Key Log_Rec_Len', 1 'Gp_St_Pkt_No' Write(20,'(I8,2X,I8,6X,I8,8X,I8)') (Idat_four(i),i=1,4) Write(20,*) '----------------------Data-----------', 1 '--------------' Write(6,*) Write(6,*) ' End of the ODF file' Goto 9999 Elseif (Idat_four(1).EQ.2030) Then !there is more than one ramp group !in an ODF file. Goto 2222 Else Read(10,rec=R) (IRampG_four(i),i=1,9) Write(20,'(I4,F25.10,F18.10,2F23.10)') 1 ibits(IrampG_four(5),0,10), 2 (IRampG_four(1)+IRampG_four(2)*1.D-9), 3 IRampG_four(3)+IRampG_four(4)*1.D-9, 4 ibits(IRampG_four(5),10,22)*1.D9+IRampG_four(6)+ 4 IRampG_four(7)*1.D-9, 5 (IRampG_four(8)+IRampG_four(9)*1.D-9) Endif R=R+1 Enddo Endif R=R+1 Enddo Close(10) Close(20) 9999 Continue End Program