Subject: [IGSREPORT-77] JPL analysis report (week 0676)
From: David C Jefferson
Date: 7 JAN 1993 18:53:48

***********************************************************************
IGS Electronic Report      7-JAN-1993 18:53:48       Message Number 77
***********************************************************************

From:    David C Jefferson
Subject: JPL analysis report (week 0676)
----------------------------------------

Submitted by

J F Zumberge, G Blewitt, M B Heflin, D C Jefferson, F H Webb

all at the Jet Propulsion Laboratory, California Institute of Technology, 
Pasadena, CA  91109.

The following files have been posted on BODHI (for access to BODHI contact
[email-masked]):

______________________________________________________________________________
filename               contents
______________________________________________________________________________
jpl06767.sum           This text file.
jpl06767.erp           Earth rotation parameters for GPS week 676.
jpl06767.sp1           GPS ephemerides for GPS week 676, sp1 format.
jpl06767.sp3            "       "       "   "   "    " , sp3   "   .
______________________________________________________________________________

Results for all seven days are included in this report, as A-S was not on
for the duration of this week. We have again de-weighted data for PRN'S 11
and 32 (GPS08, GPS32), however we will begin weighting data for PRN32 normally
in subsequent analyses.

The measurement of LODR for Dec 24 (day 359) appears to be an outlier,
although we are unable to discern exactly why.

Finally, the analysis team at JPL wishes everyone a Happy 1993, and looks
forward to participating in a productive year for IGS.

WARNING: PRN's 11 and 32 (GPS08 and GPS32) have been de-weighted for week 676.

JPL LODR TABLE                               GPS week 676 (1992 Dec 20 - Dec 26)
  MJD       LODR     +/-
          (ms/day)
 48976.5    2.49     0.05
 48977.5    2.22     0.05
 48978.5    2.47     0.05
 48979.5    2.22     0.05
 48980.5    3.10     0.05
 48981.5    2.29     0.05
 48982.5    2.37     0.05
END LODR TABLE

NOTE: In the following table, UT1R-UTC are the assumed nominal values from
IERS Bulletin-B predicts; estimated LODR values are given in the previous
table. See IGS Mail Message 97 for details.

JPL UTPM TABLE                               GPS week 676 (1992 Dec 20 - Dec 26)
  MJD       X        Y       UT1R-UTC XSIG    YSIG   UTSIG  RMS  XYC  XUC  YUC STA SAT PASS    
           ''        ''        sec     ''     ''      sec
 48976.5   .19470   .38991   .09418  .00017  .00015  .00000  .0 -.05  .00  .00  25 20  0
 48977.5   .19516   .38703   .09190  .00018  .00015  .00000  .0 -.04  .00  .00  25 20  0
 48978.5   .19633   .38427   .08962  .00019  .00016  .00000  .0 -.04  .00  .00  25 20  0
 48979.5   .19748   .38220   .08734  .00019  .00016  .00000  .0 -.05  .00  .00  24 20  0
 48980.5   .19767   .37901   .08506  .00022  .00019  .00000  .0  .08  .00  .00  25 20  0
 48981.5   .19919   .37638   .08279  .00018  .00016  .00000  .0 -.07  .00  .00  24 20  0
 48982.5   .20049   .37379   .08051  .00017  .00015  .00000  .0 -.06  .00  .00  25 20  0
END UTPM TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 676:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 676 (1992 Dec 20 - Dec 26)
      92 12 20   92 12 21   92 12 22   92 12 23   92 12 24   92 12 25   92 12 26
prn   3d rss (m)
  2       0.32       0.14       0.34       0.53       0.36       0.26       0.22
  3       0.40       0.35       0.34       0.35       0.36       0.25       0.30
 11       0.90       1.11       1.22       1.05       1.07       1.25       0.93
 12       0.57       0.47       0.28       0.68       0.65       0.88       0.86
 13       0.22       0.19       0.30       0.48       0.39       0.31       0.48
 14       0.42       0.34       0.55       0.41       0.24       0.30       0.37
 15       0.30       0.17       0.35       0.88       0.95       0.92       0.53
 16       0.64       0.44       0.38       0.34       0.56       0.45       0.20
 17       0.31       0.27       0.29       0.46       0.52       0.45       0.22
 18       0.14       0.19       0.33       0.45       0.31       0.24       0.11
 19       0.12       0.16       0.28       0.37       0.25       0.20       0.17
 20       0.24       0.13       0.26       0.39       0.24       0.18       0.17
 21       0.34       0.30       0.62       0.88       0.63       0.74       0.69
 23       0.96       0.87       0.91       0.94       1.14       1.51       1.11
 24       0.25       0.22       0.20       0.37       0.48       0.33       0.25
 25       0.30       0.26       0.39       0.35       0.24       0.36       0.29
 26       0.24       0.30       0.38       0.62       0.47       0.57       0.21
 27       0.31       0.24       0.20       0.37       0.25       0.35       0.23
 28       0.22       0.36       0.44       0.33       0.58       0.48       0.35
 32       1.90       1.24       1.67       1.79       1.09       0.81       1.12
END ORBIT REPEATABILITY TABLE

As described in IGS Mail Message 37, the following table compares the JPL
precise ephemerides with those from the broadcast ephemeris:

JPL COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES
      92 12 20   92 12 21   92 12 22   92 12 23   92 12 24   92 12 25   92 12 26
prn   3d rss (m)
  2       5.2        5.0        4.9        5.1        3.6        4.6        4.3 
  3      17.2       18.5       19.7       18.8       19.9       19.8       16.3 
 11       6.2        7.4        3.9        2.9        6.7        6.69       7.0 
 12       7.6        5.1        5.7        9.3        6.6        4.9        4.6 
 13       4.7        3.2        5.6        6.2        2.7        2.2        5.1 
 14       5.2        7.0        7.9        7.7       10.1        6.5        6.5 
 15       2.6        2.8        2.9        3.4        2.9        3.1        3.5 
 16       4.9        4.9        6.7        4.5        5.1        4.6        4.8 
 17       3.7        4.6        2.6        4.5        3.9        3.6        4.5 
 18       6.2        5.8        7.5        6.1        5.8        5.4        7.7 
 19       6.8        7.3        7.8        7.5        7.8        5.8        5.5 
 20       6.9        6.5        4.8        5.7        4.8        5.8        5.7 
 21       2.6        1.9        3.2        5.5        2.9        2.2        2.9 
 23       5.4        7.8        6.9        3.3        2.8        3.0        3.8 
 24       4.7        5.3        5.3        4.7        4.5        4.7        5.4 
 25      12.7       12.4       13.6       10.1       11.2        8.7        7.9 
 26       3.2        3.5        3.0        3.1        3.1        3.2        3.0 
 27      12.8       12.2       11.2       10.8       11.8       12.9       13.1 
 28       8.1       12.0       25.6        3.5       16.7        3.0        7.2 
 32      26.2       33.4       28.4       23.7       24.0       22.4       21.4 
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

The following table, as explained in IGS Mail Message 91, indicates which
tracking sites were used in this week's analysis:

JPL GROUND STATION INCLUSION TABLE           GPS week 676 (1992 Dec 20 - Dec 26)
      92 12 20   92 12 21   92 12 22   92 12 23   92 12 24   92 12 25   92 12 26

ALBH      X          X          X          X          X          X          X
ALGO*     X          X          X          X          X          X          X
DRAO      X          X          X          X          X          X          X
FAIR*     X          X          X          X          X          X          X
GOLD      X          X          X          X          X          X          X
HART*     X          X          X          X          X          X          X
JPLM      X          X          X          X          X          X          X
KOSG      X          X          X          X          X          X          X
MADR*     X          X          X          X          X          X          X
MATE      X          X          X          X          X          X          X
MCMU      X          X          X          X          X          X          X
METS      X          X          X          X          X          X          X
ONSA      X          X          X          X          X          X          X
PAMA      X          X          X          X          X          X          X
RCM2      X          X          X          X          X          X          X
SANT*     X          X          X          X          X          X          X
STJO      X          X          X          X          X          X          X
TAIW      X          X          X          X          X                     X
TIDB      X          X          X          X          X          X          X
TROM*     X          X          X                     X          X          X
USUD      X          X          X          X          X          X          X
WETT      X          X          X          X          X          X          X
YAR1*     X          X          X          X          X          X          X
YELL      X          X          X          X          X          X          X
_______________________
*Indicates fiducial site.
END GROUND STATION INCLUSION TABLE