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vfcgps.for
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C %P%
LOGICAL FUNCTION VFCGPS (IUO,IUO2,B,G,A,NX,GOOGE)
********************************************************************************
* REFORM OBS. EQS., COMPUTE INVERSE AND V.F.'S, AND TEST CONVERGE
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H,O-Z)
IMPLICIT INTEGER (I-N)
PARAMETER ( LENC = 10 )
PARAMETER (NVECS=700)
LOGICAL GETA
LOGICAL LSS, LUP, LMSL, LABS, LADJ, LUPI
LOGICAL FATAL,FATAL2,FIXVF,PROP,INVERT
DIMENSION B(*),G(*),A(*),NX(*),GOOGE(*)
DIMENSION IC(LENC),C(LENC)
DIMENSION COVECF(3,3), C3(3,LENC)
COMMON /OPT/ AX, E2, DMSL, DGH, VM, VP, CTOL, ITMAX, IMODE,
& LMSL, LSS, LUP, LABS, LADJ, LUPI
COMMON /CONST/ PI, PI2, RAD
COMMON /STRUCT/ NSTA, NAUX, NUNK, IDIM, NSTAS, NOBS, NCON, NZ,NGRT
COMMON/UNITS/ LUNIT
COMMON /GPSHUS/ GPSVS(NVECS*3,2), GPSRNS(NVECS*3)
** v 4.32vf
LOGICAL IVCGPS,VSlogic
COMMON/VCREC/SIGH,SIGU, VFHOR,VFUP, IVCGPS
CHARACTER*13 VSPROJ
PARAMETER (MAXPRJ=2500)
COMMON/VSREC/SIGHS(MAXPRJ), SIGUS(MAXPRJ), ISETHU, VSPROJ(MAXPRJ),
& VSlogic
CHARACTER*99 SCCSID
***10-31-03
* common/vcrec2/vtvhor, vtvup, vtvcor, rnhor, rnup
C
C SCCSID='$Id: vfcgps.for 65375 2012-09-20 15:10:51Z jarir.saleh $ 20$Date: 2008/08/25 16:04:22 $ NGS'
VFCGPS = .TRUE.
VFSTOL = 1.D-3
VFCTOL = 1.D-3
*** COMPLETE THE COMPUTATION OF THE GOOGE NUMBERS
DO 44 I = 1,NUNK
IF ( .NOT. GETA(I,I,VAL,A,NX)) THEN
CALL INVIUN (I,ISN,ITYP,ICODE)
WRITE (LUNIT,55) I,ISN,ITYP,ICODE
55 FORMAT ('0 FATAL ERROR IN GOOGE COMPUTATION IN VFCGPS',4I8)
CALL ABORT2
ENDIF
*** ALLOW FOR GOOGE OF ZERO IF SOLVING A SINGULAR SYSTEM
VAL2 = VAL*VAL
GOOGE(I) = DIVID( VAL2, GOOGE(I) )
44 CONTINUE
*** INVERT WITHIN PROFILE
IF (IMODE .NE. 1) THEN
IF ( .NOT. INVERT(A,NX)) THEN
WRITE (LUNIT,666)
666 FORMAT ('0STATE ERROR IN INVERSION OF A IN VFCGPS')
CALL ABORT2
ENDIF
ENDIF
*** INITIALIZE VARIANCE FACTORS
VTVHOR=0.0
VTVUP=0.0
VTVCOR=0.0
RNHOR=0.0
RNUP=0.0
*** LOOP OVER THE OBSERVATIONS
FATAL2 = .FALSE.
FATAL = .FALSE.
REWIND IUO
REWIND IUO2
100 READ (IUO,END=777) KIND,ISN,JSN,IC,C,LENG,CMO,OBSB,SD,IOBS,
& IVF,IAUX,IGRT
IF (KIND .LE. 999) THEN
IF (KIND .LT. 18 .OR. KIND .GT. 20) THEN
CALL FORMC (KIND,C,B,ISN,JSN,IAUX,IGRT)
CALL COMPOB (KIND,OBS0,B,OBSB,ISN,JSN,IAUX,IGRT)
IF (KIND .EQ. 1 .OR. KIND .EQ. 2) THEN
CMO = OBS0
ELSE
CMO = OBS0 - OBSB
IF ( KIND .EQ. 8 .OR. KIND .EQ. 10 .OR.
& KIND .EQ. 11 .OR. KIND .EQ. 12) THEN
IF (CMO .GT. PI) THEN
CMO = CMO - PI - PI
ELSEIF (CMO .LT. -PI) THEN
CMO = CMO + PI + PI
ENDIF
ENDIF
ENDIF
CALL BIGL (KIND,ISN,JSN,IOBS,IVF,CMO,SD,FATAL)
WRITE (IUO2) KIND,ISN,JSN,IC,C,LENG,CMO,OBSB,SD,IOBS,
& IVF,IAUX,IGRT
ELSEIF (KIND .EQ. 18) THEN
*** CORRELATED TYPE (DOPPLER)
OBSBX = OBSB
SDX = SD
IOBSX = IOBS
CALL FORMC (KIND,C,B,ISN,JSN,IAUX,IGRT)
DO 101 I = 1, LENG
C3(1,I) = C(I)
101 CONTINUE
CALL BIGL (KIND,ISN,JSN,IOBS,IVF,CMO,SD,FATAL)
WRITE (IUO2) KIND,ISN,JSN,IC,C,LENG,CMO,OBSB,SD,IOBS,
& IVF,IAUX,IGRT
ELSEIF (KIND .EQ. 18) THEN
CALL COMPOB (KIND,OBS0X,B,OBSBX,ISN,JSN,IAUX,IGRT)
CMOX = OBS0X - OBSBX
CALL BIGL (KIND,ISN,JSN,IOBSX,IVF,CMOX,SDX,FATAL)
WRITE (IUO2) KIND,ISN,JSN,IC,C,LENG,CMOX,OBSBX,SDX,IOBSX,
& IVF,IAUX,IGRT
READ (IUO,END=777) KIND,ISN,JSN,IC,C,LENG,CMO,OBSBY,SDY,IOBSY,
& IVF,IAUX,IGRT
CALL FORMC (KIND,C,B,ISN,JSN,IAUX,IGRT)
DO 102 I = 1, LENG
C3(2,I) = C(I)
102 CONTINUE
CALL COMPOB (KIND,OBS0Y,B,OBSBY,ISN,JSN,IAUX,IGRT)
CMOY = OBS0Y - OBSBY
CALL BIGL (KIND,ISN,JSN,IOBSY,IVF,CMOY,SDY,FATAL)
WRITE (IUO2) KIND,ISN,JSN,IC,C,LENG,CMOY,OBSBY,SDY,IOBSY,
& IVF,IAUX,IGRT
READ (IUO,END=777) KIND,ISN,JSN,IC,C,LENG,CMO,OBSBZ,SDZ,IOBSZ,
& IVF,IAUX,IGRT
CALL FORMC (KIND,C,B,ISN,JSN,IAUX,IGRT)
DO 103 I = 1, LENG
C3(3,I) = C(I)
103 CONTINUE
CALL COMPOB (KIND,OBS0Z,B,OBSBZ,ISN,JSN,IAUX,IGRT)
CMOZ = OBS0Z - OBSBZ
CALL BIGL (KIND,ISN,JSN,IOBS,IVF,CMOZ,SDZ,FATAL)
WRITE (IUO2) KIND,ISN,JSN,IC,C,LENG,CMOZ,OBSBZ,SDZ,IOBSZ,
& IVF,IAUX,IGRT
READ (IUO,END=777) ISIGNL, ( (COVECF(I,J), J = 1,3), I = 1,3 )
WRITE (IUO2) ISIGNL, ( (COVECF(I,J), J = 1,3), I = 1,3 )
ENDIF
*** GPS OBSERVATIONS
ELSE
NVEC = ISN
IAUX = JSN
NR = 3*NVEC
WRITE (IUO2) KIND,ISN,JSN,IC,C,LENG,CMO,OBSB,SD,IOBS,
& IVF,IAUX,IGRT
CALL FORMG3 (IUO,IUO2,NVEC,NR,G,B,A,NX,FATAL,IVF,IAUX,IGRT,
& VTVHOR,VTVUP,VTVCOR,RNHOR,RNUP)
ENDIF
GO TO 100
*** ABORT DUE TO LARGE MISCLOSURES
777 IF (FATAL) THEN
CALL LINE (3)
WRITE (LUNIT,3) VM
3 FORMAT ('0TERMINATED DUE TO MISCLOSURES (C-O)/SD EXCEEDING ' ,
& F11.1/)
CALL ABORT2
ENDIF
REWIND IUO
REWIND IUO2
*** EXCHANGE PRIMARY/SECONDARY OBS EQ FILE INDICATOR
ITEMP = IUO
IUO = IUO2
IUO2 = ITEMP
*** HEADING
CALL LINE (3)
WRITE (LUNIT,20)
****12-02-03***********
* 20 FORMAT (/' TYPE WEIGHTED SUM OF SQUARES REDUNDANCY ',
* & ' FACTOR ESTIMATED S.D.'/)
20 FORMAT (/' TYPE WEIGHTED SUM OF SQUARES CORRECTED ',
& 'SUM OF SQUARES REDUNDANCY FACTOR ESTIMATED S.D.'/)
*************************
*** COMPUTE VARIANCE FACTORS AND TEST CONVERGENCE
****12-02-03************
CVTVH = VTVHOR + 2.0*VTVCOR/3.0
CVTVU = VTVUP + VTVCOR/3.0
**************************
VFHOR=CVTVH/RNHOR
VFUP=CVTVU/RNUP
VFHOR=SQRT(VFHOR)
VFUP= SQRT(VFUP)
SIGH=SIGH*VFHOR
SIGU=SIGU*VFUP
IF (DABS(VFHOR-1.D0) .GT. VFCTOL) VFCGPS = .FALSE.
IF (DABS(VFUP -1.D0) .GT. VFCTOL) VFCGPS = .FALSE.
CALL LINE (1)
*****12-02-03**************
* WRITE (LUNIT,12) 'HORIZONTAL OBSERVATIONS ',VTVHOR,RNHOR,VFHOR,
* & SIGH
* WRITE (LUNIT,12) 'UP OBSERVATIONS ',VTVUP,RNUP,VFUP, SIGU
* WRITE (LUNIT,12) 'CORRELATED OBSERVATIONS ',VTVCOR
* 12 FORMAT (1X,A24,3F14.3, F8.3)
WRITE (LUNIT,12) 'HORIZONTAL OBSERVATIONS ',VTVHOR,CVTVH,
& RNHOR,VFHOR,SIGH
WRITE (LUNIT,12) 'UP OBSERVATIONS ',VTVUP,CVTVU,
& RNUP,VFUP,SIGU
WRITE (LUNIT,12) 'CORRELATED OBSERVATIONS ',VTVCOR
12 FORMAT (1X,A24,F14.3,13X,4F14.3)
***************************
IF(RNHOR.LT.VFSTOL .OR. RNUP.LT.VFSTOL) THEN
CALL LINE (1)
WRITE (LUNIT,11) RNHOR,RNUP
11 FORMAT (1X,2F10.4,' HORIZONTAL AND/OR VERTICAL GPS ',
& 'REDUNDANCY NUMBER FAILS TOLERANCE TEST. ABORTING.' )
FATAL2 = .TRUE.
ENDIF
*** ABORT IF SINGULAR VARIANCE FACTORS
IF (FATAL2) THEN
CALL LINE (3)
WRITE (LUNIT,4)
4 FORMAT (' TERMINATED DUE TO VARIANCE FACTOR SINGULARITIES ')
CALL ABORT2
ENDIF
RETURN
END
SUBROUTINE FORMG3 (IUO, IUO2, NVEC, NR, G, B, A, NX, FATAL, IVF,
& IAUX, IGRT,VTVHOR,VTVUP,VTVCOR,RNHOR,RNUP)
********************************************************************************
* ROUTINE TO RE-COMPUTE OBS.EQ. FOR A GPS SESSION
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
PARAMETER ( NVECS = 700, MXSSN = 9999 )
DIMENSION ICM((NVECS+1)*3+1+3)
DIMENSION KINDS(NVECS*3), ISNS(NVECS*3), JSNS(NVECS*3)
DIMENSION LOBS(NVECS*3)
LOGICAL FATAL
LOGICAL L2HLF, LEHT
DIMENSION B(*), G(NR,*), A (*), NX(*)
COMMON /STRUCT/ NSTA, NAUX, NUNK, IDIM, NSTAS, NOBS, NCON, NZ,NGRT
COMMON /DUAL/ N2HLF, I2HLF(MXSSN), L2HLF, LEHT
IF ( .NOT. L2HLF) THEN
LENG = (NVEC+1)*IDIM + 1
ELSE
LENG = (NVEC+1)*3 + 1
ENDIF
IF (NGRT .GT. 0) LENG = LENG + 3
* NC = NR + 3 + LENG
NC = NR + 5 + LENG
*** READ SUPPORTING INDICIES
READ (IUO) ICM, NICM, KINDS, ISNS, JSNS, LOBS
WRITE (IUO2) ICM, NICM, KINDS, ISNS, JSNS, LOBS
*** LOAD WORK SPACE (G)
DO 1 I = 1, NR
READ (IUO) (G(I,J), J = 1, NC)
1 CONTINUE
*** COMPUTE AND DECORRELATE OBS. EQ. AND MISCLOSURE
CALL VFGPS3 (G, NR, NC, NVEC, LENG, B, ICM, NICM, KINDS, ISNS,
& JSNS, LOBS, IAUX, IVF, FATAL, A, NX, N1, N2, N3,N4,N5,IGRT,
& VTVHOR,VTVUP,VTVCOR,RNHOR,RNUP)
*** REWRITE UPDATED WORK SPACE
DO 500 I = 1, NR
WRITE (IUO2) (G(I,J), J = 1, NC)
500 CONTINUE
RETURN
END
SUBROUTINE VFGPS3(G, NR, NC, NVEC, LENG, B, ICM, NICM, KINDS,ISNS,
& JSNS, LOBS, IAUX, IVF, FATAL, A, NX, N1, N2, N3,N4,N5,IGRT,
& VTVHOR,VTVUP,VTVCOR,RNHOR,RNUP)
********************************************************************************
* COMPUTE CONTRIBUTIONS TO SUM OF SQUARES AND REDUNDANCY FOR ONE GPS SESSION
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
PARAMETER ( NVECS = 700, LENC = 10, MXVF = 40, MXSSN = 9999 )
DIMENSION ICM((NVECS+1)*3+1+3)
DIMENSION KINDS(NVECS*3), ISNS(NVECS*3), JSNS(NVECS*3)
DIMENSION LOBS(NVECS*3)
LOGICAL FATAL, PROP, FIXVF
LOGICAL LSS, LUP, LMSL, LABS, LADJ, LUPI
LOGICAL L2HLF, LEHT
DIMENSION IC(LENC), C(LENC)
DIMENSION B(*), G(NR,NC), A(*), NX(*)
COMMON/UNITS/ LUNIT
COMMON /LASTSN/ ISNX, JSNX
COMMON /DUAL/ N2HLF, I2HLF(MXSSN), L2HLF, LEHT
COMMON /STRUCT/ NSTA, NAUX, NUNK, IDIM, NSTAS, NOBS, NCON, NZ,NGRT
COMMON /GPSHUS/ GPSVS(NVECS*3,2), GPSRNS(NVECS*3)
*** LENGTH OF COEFF. ARRAYS
IF ( .NOT. L2HLF) THEN
LENGC = 2*IDIM
ELSE
LENGC = 2*3
ENDIF
IF (IAUX .GT. 0) LENGC = LENGC + 1
IF (IGRT .GT. 0) LENGC = LENGC + 3
*** SET LAST STATION ENCOUNTERED TO NULL
ISNX = 0
JSNX = 0
*** DETERMINE WORK ARRAY COLUMN POINTERS
CALL GLOCAT (N1, N2, N3, N4, N5, NVEC, LENG)
*** (STEP 1.) COMPUTE COEFFICIENTS OF CORRELATED OBSERVATIONS
DO 10 I = 1, NR
KIND = KINDS(I)
ISN = ISNS(I)
JSN = JSNS(I)
CALL FORMC (KIND, C, B, ISN, JSN, IAUX, IGRT)
CALL GETGIC (ISN, JSN, IAUX, ICM, IC, N2, NICM, IGRT)
DO 2 J = 1, LENG
K = J + N2
G(I,K) = 0.D0
2 CONTINUE
DO 20 J = 1, LENGC
G(I,IC(J) ) = C(J)
20 CONTINUE
10 CONTINUE
**** STEP 2. COMPUTE REDUNDANCY NUMBERS FOR THIS SESSION
*** SAVE IN GPSRNS
CALL RNNEU (G, NR, NC, NVEC, LENG, B, ICM, NICM, KINDS,
& ISNS, JSNS, LOBS, IAUX, IVF, FATAL, NOBIGV,
& A, NX, N2, N3, N4, GMDES, IGRT)
**
* STEP 4.
****** COMPUTE RESIDUALS (MISCLOSURES) IN X,Y,Z
C
DO 90 I = 1, NR
KIND = KINDS(I)
ISN = ISNS(I)
JSN = JSNS(I)
CALL COMPOB (KIND, OBS0, B, ADUMMY, ISN, JSN, IAUX, IGRT)
CMO = OBS0 - G(I,NC)
G(I,N4) = CMO
90 CONTINUE
C
******* STEP 5. COMPUTE RESIDUALS IN E,N,U.
******* PUT V-TILDE H IN COLUMN 1 OF GPSVS
******* PUT V-TILDE U IN COLUMN 2 OF GPSVS
***
DO 100 IVEC=1,NVEC
CALL RGPS2( IVEC, NVEC, NR, NC, N4, LENG, G, B, IAUX, IVF,
& SIGUWT, A, NX, IGRT, KINDS,ISNS,JSNS,LOBS)
100 CONTINUE
*** STEP 6. COMPUTE V-HAT-H AND V-HAT U
C multiply the columns of GPSVS by R(inverse)(transpose), where R is the
C upper Cholesky factor of the covariance matrix of the
C observatios for this session.
C
CALL CMRHS3(G,NR,GPSVS,3*NVECS,1)
C
C DO THE SAME FOR COLUMN 2
C
CALL CMRHS3(G,NR, GPSVS,3*NVECS,2)
**
** STEP 7. COMPUTE CONTRIBUTIONS OF THIS SESSION TO VTPV HORIZONTAL,
**** UP, AND MIXED TERMS. ACCUMULATE REDUNDANCY NUMBERS
***
SPVVHS=0.0
SPVVUS=0.0
SPVVHU=0.0
RNHS=0.0
RNUS=0.0
C
C accumulate the weighted sum of squares of residuals for this session
DO 110 I=1,NR
SD = 1.D0
CALL BIGV (KINDS(I), ISNS(I), JSNS(I), LOBS(I), IVF, G(I,N4),
& SD, FATAL)
C SKIP REJECTED OBSERVATIONS
IF(G(I,N5).GE.100.0) GO TO 110
SPVVHS=SPVVHS+GPSVS(I,1)**2
SPVVUS=SPVVUS+GPSVS(I,2)**2
SPVVHU=SPVVHU+GPSVS(I,1)*GPSVS(I,2)
IF (MOD(I,3).EQ.0) THEN
RNUS=RNUS+GPSRNS(I)
ELSE
RNHS=RNHS+GPSRNS(I)
ENDIF
110 CONTINUE
C
C add the contribution of this session to the total
VTVHOR=VTVHOR+SPVVHS
VTVUP=VTVUP+SPVVUS
VTVCOR=VTVCOR+2.0*SPVVHU
RNHOR=RNHOR+RNHS
RNUP=RNUP+RNUS
****
RETURN
END