Subject: [IGSREPORT-129] JPL Analysis Report (week 680)
From: David C Jefferson
Date: 08 FEB 1993 00:00:00

From:     David C Jefferson
Subject:  JPL Analysis Report (week 680)
----------------------------------------

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
______________________________________________________________________________
jpl06807.sum           This text file.
jpl06807.erp           Earth rotation parameters for GPS week 680.
jpl06807.sp1           GPS ephemerides for GPS week 680, sp1 format.
jpl06807.sp3            "       "       "   "   "    " , sp3   "   .
______________________________________________________________________________

As in previous weeks, we continue to deweight data from PRN11/GPS08 and PRN29/
GPS29; repeatabilites for these satellites are at the 10-20 meter level.
The large orbit repeatability for PRN19/GPS19 on January 17 reflects the
maneuver of that satellite on January 16 (see last week's analysis report,
jpl06797.sum).

WARNING: PRN's 11 and 29 (GPS08 and GPS29) show unmodeled behavior at the                10 meter-level for week 680 and their data have been deweighted.

JPL LODR TABLE                               GPS week 680 (1993 Jan 17 - Jan 23)
  MJD       LODR     +/-
          (ms/day)
 49004.5    2.41     0.06
 49005.5    2.41     0.05
 49006.5    2.39     0.05
 49007.5    2.40     0.05
 49008.5    2.44     0.05
 49009.5    2.42     0.05
 49010.5    2.46     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 680 (1993 Jan 17 - Jan 23)
  MJD       X        Y       UT1R-UTC XSIG    YSIG   UTSIG  RMS  XYC  XUC  YUC STA SAT PASS    
           ''        ''        sec     ''     ''      sec
 49004.5   .21310   .31473   .03019  .00017  .00022  .00000  .0  .06  .00  .00  28 21  0
 49005.5   .21296   .31261   .02786  .00017  .00021  .00000  .0  .10  .00  .00  31 21  0
 49006.5   .21254   .30966   .02552  .00016  .00020  .00000  .0  .12  .00  .00  31 21  0
 49007.5   .21222   .30618   .02318  .00015  .00019  .00000  .0  .05  .00  .00  32 21  0
 49008.5   .21194   .30401   .02084  .00014  .00015  .00000  .0  .05  .00  .00  32 21  0
 49009.5   .21268   .30114   .01848  .00013  .00015  .00000  .0  .07  .00  .00  33 21  0
 49010.5   .21241   .29899   .01612  .00013  .00015  .00000  .0  .09  .00  .00  34 21  0
END UTPM TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 680:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 680 (1993 Jan 17 - Jan 23)
      93  1 17   93  1 18   93  1 19   93  1 20   93  1 21   93  1 22   93  1 23
prn   3d rss (m)
  2       0.72       0.92       0.71       0.45       0.43       0.31       0.40
  3       0.30       0.30       0.31       0.52       0.40       0.23       0.29
 11      11.54      12.52       2.73       2.77       3.00       2.13       2.17
 12       0.91       1.32       0.74       1.11       0.84       0.35       0.43
 13       0.56       1.44       0.58       0.97       0.66       0.50       0.44
 14       0.54       0.93       0.54       0.75       0.49       0.48       0.42
 15       0.48       0.40       0.42       0.25       0.29       0.26       0.34
 16       0.72       0.80       0.64       0.58       0.29       0.17       0.58
 17       0.80       0.87       0.54       0.34       0.31       0.26       0.30
 18       0.33       0.31       0.24       0.29       0.32       0.31       0.35
 19      39.24       0.33       0.21       0.28       0.21       0.27       0.24
 20       0.30       0.29       0.31       0.31       0.51       0.40       0.49
 21       0.48       0.56       0.57       0.36       0.44       0.43       0.42
 23       0.92       0.65       0.45       0.48       0.45       0.60       0.47
 24       0.44       0.41       0.43       0.41       0.19       0.37       0.32
 25       0.34       0.29       0.13       0.44       0.44       0.19       0.21
 26       0.58       0.63       0.48       0.33       0.42       0.16       0.24
 27       0.38       0.38       0.23       0.30       0.17       0.27       0.45
 28       0.38       0.29       0.32       0.18       0.40       0.31       0.29
 29       1.21       2.71       2.14       1.82       1.59       2.33       0.97
 32       0.88       0.46       0.40       0.48       0.47       0.45       0.39
_______________________
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
      93  1 17   93  1 18   93  1 19   93  1 20   93  1 21   93  1 22   93  1 23
prn   3d rss (m)
  2       7.1        6.7        6.2        9.3        8.8        6.2        5.0 
  3      14.2       13.5       12.8       11.4       12.7       11.0        9.6 
 11       7.3       15.4       19.7       17.2        8.8       14.0        8.7 
 12       8.7       11.1        9.5       10.0       12.7       16.9       13.5 
 13       4.0        4.8        7.4        9.7        6.0        3.2        4.5 
 14       5.9        7.3        5.6        6.8        8.5        7.0        6.9 
 15       8.0        9.5        8.7       12.3       10.5        8.8        7.2 
 16       5.2        5.7        5.3        4.4        5.2        4.5        5.1 
 17       7.1        6.4        4.6        4.4        4.7        4.4        5.5 
 18       6.9        5.1        8.1        9.3        8.6        7.8        6.4 
 19       2.2        7.9        6.8        7.6        7.2        3.8        4.6 
 20       5.6        4.5        5.2        5.4        5.3        6.9        9.1 
 21       4.8        7.6       11.7        5.5        8.1        3.6        8.4 
 23       4.4        6.1        2.6        6.1        4.9        7.6        4.5 
 24      10.9       13.7       16.2       19.5       20.1       13.1        9.7 
 25       8.7        8.8        7.5        5.2        5.9        6.0        5.8 
 26       2.6        3.0        3.0        5.6        4.0        3.9        3.7 
 27      14.5       12.7       13.6       14.0       15.8       16.8       14.4 
 28       4.3        2.6        4.3        6.0        4.4        4.8        5.7 
 29      28.7       28.4       28.5       29.5       32.7       26.7       27.1 
 32       5.0        5.0        5.2        6.1        5.0        5.1        5.8 
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

The following table, as explained in IGS Report No. 99, indicates the amount
of data from each tracking site used in this week's analysis:

JPL GROUND STATION INCLUSION TABLE           GPS week 680 (1993 Jan 17 - Jan 23)
      93  1 17   93  1 18   93  1 19   93  1 20   93  1 21   93  1 22   93  1 23
site    % data
ALBH       92         94         95         95         95         75         96
ALGO*     104         97         97         97         97         97         97
CANB       87         70         91         93         92         86         88
FAIR*     100         91         91         91         92         80         74
GOLD       89          7         34         70         86         75         78
GRAZ       62         47         46         38         64         97         57
HART*     105        103        103        103        103        102        103
JPLM      107         99         99         98         99         99         99
KOKB*     109         84         88         91         98        103        104
KOSG      102         78        100        100        101        100        100
KOUR       19         99        100        101         98         97         96
MADR*      95         73         87         64         83         82         85
MASP       38         86         97         99         99        100         99
MATE      102         98         98         98         98         98         95
MCMU                                                                         12
METS       20        103        100        102        103        103         89
NALL      119        113        100         93        109         99         11
ONSA       69         64         99         95         95         95         95
PAMA      101         96         86         83         92         96         96
PENT       93         89         87         26         93         94         98
PIE1      100         90         89         86         85         84         94
QUIN      101         89         86         82         82         85         96
RCM2                                                               9         68
SANT*     108         98        100         99         99         99         99
STJO       98         96         98         98         98         98         99
TAIS                   2          3         49        101        101        101
TROM*     119        113        112        112        114        113        102
USUD      103         98         96         98         98         90         96
WETB      104         99         90         19         86         95         94
YAR1*                                        7         88        101        102
YELL      109        103        105        105        105        105        105
_______________________
*Indicates fiducial site.
END GROUND STATION INCLUSION TABLE