Subject: [IGSREPORT-556] JPL0717.SUM
From: [email-masked]
Date: 20 OCT 1993 20:08:43

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IGS Electronic Report     20-OCT-1993 20:08:43       Message Number 556
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From: [email-masked]
Subj: JPL0717.SUM
--------------------------------

Submitted by

D C Jefferson, J F Zumberge, G Blewitt, M B Heflin, 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
______________________________________________________________________________
jpl07177.sum           This text file.
jpl07177.erp           Earth rotation parameters for GPS week 717.
jpl07177.sp1           GPS ephemerides for GPS week 717, sp1 format.
jpl07177.sp3            "       "       "   "   "    " , sp3   "   .
______________________________________________________________________________

For this week's analysis, we have processed data from PRN05/GPS35 using normal
data weighting. The atypically large 8.24m value for orbit repeatability for
this satellite on day 276 (Oct 3) is caused by the deweighting of its data on
the previous day; see jpl07167.sum for more information. 

Also, data from GGAO (Greenbelt, MD, USA) were excluded for the entire week of
analysis, and data from GRAZ (Graz, Austria) were excluded for all days EXCEPT
day 279 (Oct 6). These data were not well modelled for most of week 717.

WARNING: Data from GGAO have been excluded for all days of GPS week 717.
WARNING: Data from GRAZ have been excluded for all days of week 717 EXCEPT day
         279 (October 6).

JPL LODR TABLE                               GPS week 717 (1993 Oct 03 - Oct 09)
  MJD       LODR     +/-
          (ms/day)
 49263.5    2.38     0.05
 49264.5    2.38     0.05
 49265.5    2.54     0.05
 49266.5    2.62     0.05
 49267.5    2.65     0.05
 49268.5    2.46     0.05
 49269.5    2.60     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 717 (1993 Oct 03 - Oct 09)
  MJD       X        Y       UT1R-UTC XSIG    YSIG   UTSIG  RMS  XYC  XUC  YUC STA SAT PASS    
           ''        ''        sec     ''     ''      sec
 49263.5  -.09339   .37532   .42127  .00012  .00013  .00000  .0  .04  .00  .00  40 25  0
 49264.5  -.09259   .37733   .41903  .00012  .00013  .00000  .0  .02  .00  .00  39 25  0
 49265.5  -.09207   .37952   .41677  .00012  .00013  .00000  .0  .06  .00  .00  39 25  0
 49266.5  -.09159   .38168   .41451  .00013  .00015  .00000  .0  .08  .00  .00  40 25  0
 49267.5  -.09139   .38307   .41224  .00012  .00014  .00000  .0  .05  .00  .00  40 25  0
 49268.5  -.09051   .38509   .40995  .00013  .00014  .00000  .0  .06  .00  .00  39 25  0
 49269.5  -.08941   .38708   .40766  .00013  .00015  .00000  .0  .06  .00  .00  36 25  0
END UTPM TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 717:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 717 (1993 Oct 03 - Oct 09)
      93 10  3   93 10  4   93 10  5   93 10  6   93 10  7   93 10  8   93 10  9
prn   3d rss (m)
  1       0.21       0.19       0.14       0.13       0.18       0.20       0.27
  2       0.26       0.12       0.08       0.19       0.30       0.35       0.30
  3       0.56       0.54       0.46       0.40       0.74       0.51       0.52
  5       8.24       0.28       0.22       0.20       0.23       0.13       0.18
  7       0.28       0.31       0.34       0.41       0.37       0.35       0.38
  9       0.31       0.34       0.25       0.12       0.25       0.17       0.15
 12       0.37       0.42       0.19       0.22       0.35       0.30       0.18
 13       0.36       0.32       0.42       0.26       0.40       0.52       0.51
 14       0.31       0.26       0.33       0.35       0.25       0.37       0.43
 15       0.12       0.21       0.27       0.38       0.27       0.18       0.20
 16       0.37       0.43       0.29       0.37       0.21       0.37       0.34
 17       0.27       0.57       0.46       0.43       0.51       0.45       0.36
 18       0.23       0.48       0.41       0.27       0.35       0.40       0.50
 19       0.24       0.45       0.58       0.55       0.52       0.27       0.34
 20       0.22       0.23       0.17       0.23       0.20       0.34       0.30
 21       0.17       0.18       0.22       0.24       0.20       0.21       0.29
 22       0.24       0.23       0.37       0.28       0.29       0.53       0.48
 23       0.19       0.19       0.21       0.10       0.25       0.12       0.23
 24       0.43       0.32       0.40       0.45       0.49       0.65       0.50
 25       0.18       0.23       0.58       0.41       0.42       0.33       0.29
 26       0.47       0.59       0.45       0.30       0.31       0.31       0.38
 27       0.42       0.40       0.36       0.36       0.21       0.35       0.29
 28       0.23       0.27       0.27       0.27       0.25       0.21       0.29
 29       0.19       0.34       0.36       0.27       0.34       0.36       0.33
 31       0.20       0.26       0.18       0.15       0.19       0.26       0.39
_______________________
#Indicates deweighted satellite.
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 10  3   93 10  4   93 10  5   93 10  6   93 10  7   93 10  8   93 10  9
prn   3d rss (m)
  1       8.4        8.6       26.4       31.3       18.6        7.6        7.1 
  2      10.6        9.4        8.7        9.9       11.4       10.6       10.4 
  3       4.5        4.8        5.3        5.4        5.6        5.0        5.9 
  5      15.2       14.2       14.3       13.0       12.2       12.6       10.6 
  7       5.6        5.1        6.7        8.7        6.4        7.3        6.0 
  9       3.1        4.2        3.4        2.8        3.7        3.5        3.5 
 12       2.7        2.1        2.1        2.1        3.2        3.3        1.9 
 13       8.4        7.3        5.9        7.6        8.8        8.5        6.1 
 14       3.7        3.4        5.2        4.4        3.2        4.0        4.1 
 15       6.5        5.8        4.6        4.0        4.0        6.0        4.6 
 16      10.4        8.7        7.7        9.2        8.9        9.2        8.4 
 17       5.4        4.7        5.8        6.9        2.8        2.4        4.2 
 18       7.5        6.6        5.5       11.0       13.5        9.6        9.5 
 19       4.6        4.6        5.6        5.0        4.6        5.2        7.0 
 20       5.3        5.2        4.9        5.1        5.4        5.9        4.0 
 21       3.8        6.2        5.4        4.2        3.4        4.0        5.3 
 22       6.5        8.7       10.6        4.9        6.3        7.2        6.0 
 23      10.8        8.1       11.4        8.0       10.7       11.5        9.7 
 24      10.2        9.0       11.7       10.1        9.0       11.1        6.7 
 25       6.9        7.5        6.8        6.5        6.5        6.3        6.1 
 26       4.1        4.1        4.0        4.4        4.4        3.7        3.5 
 27       7.1        6.4        6.2        6.8        6.4        5.8        6.9 
 28       4.4        2.9        3.3        3.6        2.9        2.8        3.1 
 29       6.7        6.9        8.5        8.4        8.2        7.9        7.9 
 31       6.4        5.8        5.3        6.4        6.2        6.1        6.1 
_______________________
#Indicates deweighted satellite.
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

The following tables, as explained in IGS Report Nos. 99 and 295, indicate the
amount of global network tracking data used in this week's analysis:

JPL SITE SUMMARY TABLE (no. stations)        GPS week 717 (1993 Oct 03 - Oct 09)
      93 10  3   93 10  4   93 10  5   93 10  6   93 10  7   93 10  8   93 10  9
Fiducials 8.7        8.9        9.0        8.9        8.8        9.1        9.0
Total    40.1       38.0       39.6       40.7       40.7       39.8       37.0
END SITE SUMMARY TABLE

JPL GROUND STATION INCLUSION TABLE           GPS week 717 (1993 Oct 03 - Oct 09)
      93 10  3   93 10  4   93 10  5   93 10  6   93 10  7   93 10  8   93 10  9
site    % data
ALBH      109        112        112        112        106        107        111
ALGO*      94        106        113        114        110        113        114
BRMU      100         72         92        112        100         76        109
DRAO      111        115        115        113        113        115        115
FAIR*     115        119        119        117        113        118        118
FORT      107          0         99        106        115        117        117
GOLD       95        100         97         98         97        101        101
GRAZ        0          0          0        108          0          0          0
HART*     106        109        111        108        110        110        110
HERS       94          0        100        110        111        112        112
HOBA      110         45        109        109        109        111        110
JPLM       99        108        109        108        106        109        110
KIRU        0         81         89         84         85         97          0
KOKB*     111        115        114        115        112        115        114
KOSG      103         93          0         97        109        114        114
KOUR      109        112        111        113        112        101          0
MADR*     109        110        109        111        108        113        111
MASP      113        114        116        116        115        103          0
MATE       95         98         95         84         95         95         90
MCMU      113        122        110          0          0          0          0
MDO1      110        106        111        110        111        111        111
METS      109        114        114        113        113        114        113
NLIB      104        104        102        103        102        103        103
NYAL      111        117        117        114        113        119        117
ONSA      115        114        113        113        113        107        111
PAMA      105         97          0          0        105          0          0
PIE1      106         25         97        103        111        108        108
PINY       92         91         88         89         88         94         94
QUIN      110        107        109        106        109        107        109
SANT*     109        112        113        111        113        112        112
STJO      108        107        105        107        112        116        115
TAIW       86         84         86         87         89         91         89
TIDB      112        111        111        114        113        114        113
TROM*     110        110        111        110        109        112        112
USUD      107        102         95         90         86         80         81
VNDP      108        111        112        113        111        114        113
WEST      113        113        113        111        112        107        108
WETT       73        113        114        115        114        112        104
YAR1*     113        111        111        109        107        112        113
YELL      113        117        117        115        112        115        114
_______________________
*Indicates fiducial site; #indicates deweighted site.
END GROUND STATION INCLUSION TABLE