Subject: [IGSREPORT-493] JPL07137.SUM
From: G. Blewitt
Date: 16 SEP 1993 08:45:44

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IGS Electronic Report     16-SEP-1993 08:45:44       Message Number 493
***********************************************************************

From: G. Blewitt
Subj: JPL07137.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
______________________________________________________________________________
jpl07137.sum           This text file.
jpl07137.erp           Earth rotation parameters for GPS week 713.
jpl0713[0-2].sp1,sp3   GPS ephemerides for Sun, Sep 05 through Tue, Sep07;
                        sp1 and sp3 formats (no PRN29)
jpl0713[3-6].sp1,sp3   GPS ephemerides for Wed, Sep 08 through Sat, Sep11;
                        sp1 and sp3 formats (including PRN29)
______________________________________________________________________________

According to the file gpsn3.txt obtained from tycho.usno.navy.mil, PRN29/GPS29
was unsuable from day 246 09:18 to day 251 22:16 UT. Broadcast ephemeris data
AND tracking data were not available for this satellite on day 248 (Sept. 5).
Therefore, no solution was realized for it on this day. Additionally, although
it was used in the analyses, we have chosen to exclude results for PRN29 from
the posted orbit files for days 249 and 250 (Sept. 6,7). Its data were
deweighted for the processing of day 251. These notes are all indicated in the
orbit tables below.

WARNING: Results for PRN29/GPS29 are not included for days 249, 250 (Sep 6,7).
WARNING: Data from PRN29/GPS29 have been deweighted for day 251 (Sep 8).

JPL LODR TABLE                               GPS week 713 (1993 Sep 05 - Sep 11)
  MJD       LODR     +/-
          (ms/day)
 49235.5    2.45     0.05
 49236.5    2.78     0.05
 49237.5    2.26     0.05
 49238.5    2.38     0.05
 49239.5    2.17     0.05
 49240.5    2.22     0.05
 49241.5    2.21     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 713 (1993 Sep 05 - Sep 11)
  MJD       X        Y       UT1R-UTC XSIG    YSIG   UTSIG  RMS  XYC  XUC  YUC STA SAT PASS    
           ''        ''        sec     ''     ''      sec
 49235.5  -.09842   .32455   .49366  .00013  .00014  .00000  .0  .02  .00  .00  38 23  0
 49236.5  -.09865   .32655   .49185  .00013  .00014  .00000  .0  .06  .00  .00  40 24  0
 49237.5  -.09937   .32799   .49003  .00014  .00015  .00000  .0  .09  .00  .00  40 24  0
 49238.5  -.09968   .32941   .48819  .00013  .00014  .00000  .0  .06  .00  .00  39 24  0
 49239.5  -.10026   .33082   .48634  .00014  .00015  .00000  .0  .09  .00  .00  36 24  0
 49240.5  -.10000   .33269   .48448  .00013  .00013  .00000  .0  .07  .00  .00  40 24  0
 49241.5  -.09992   .33439   .48261  .00013  .00013  .00000  .0  .05  .00  .00  41 24  0
END UTPM TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 713:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 713 (1993 Sep 05 - Sep 11)
      93  9  5   93  9  6   93  9  7   93  9  8   93  9  9   93  9 10   93  9 11
prn   3d rss (m)
  1       0.12       0.17       0.21       0.23       0.22       0.21       0.25
  2       0.89       0.66       0.59       0.42       0.39       0.64       0.35
  3       0.37       0.24       0.58       0.38       0.42       0.34       0.42
  7       0.31       0.41       0.25       0.23       0.27       0.22       0.23
  9       0.15       0.19       0.24       0.15       0.17       0.25       0.18
 12       0.28       0.19       0.14       0.21       0.29       0.50       0.28
 13       0.38       0.28       0.34       0.27       0.41       0.48       0.24
 14       0.41       0.40       0.38       0.47       0.46       0.88       0.22
 15       0.16       0.17       0.27       0.32       0.31       0.34       0.26
 16       0.69       0.64       0.69       0.80       0.22       0.31       0.34
 17       0.55       0.38       0.47       0.14       0.23       0.35       0.26
 18       0.43       0.49       0.38       0.49       0.41       0.34       0.42
 19       0.30       0.56       0.34       0.47       0.51       0.55       0.38
 20       0.76       0.63       0.49       0.37       0.38       0.44       0.39
 21       0.31       0.32       0.33       0.35       0.30       0.30       0.20
 22       0.32       0.34       0.42       0.22       0.24       0.43       0.27
 23       0.24       0.25       0.27       0.19       0.23       0.23       0.14
 24       0.34       0.63       0.63       0.24       0.20       0.70       0.23
 25       0.20       0.43       0.40       0.31       0.32       0.46       0.37
 26       0.21       0.30       0.41       0.16       0.15       0.33       0.25
 27       0.38       0.32       0.51       0.25       0.37       0.38       0.21
 28       0.29       0.29       0.19       0.18       0.37       0.23       0.18
 29      (n/a)    (excluded) (excluded)   #6.6        8.48       0.59       0.27
 31       0.23       0.25       0.27       0.17       0.26       0.29       0.21
_______________________
#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  9  5   93  9  6   93  9  7   93  9  8   93  9  9   93  9 10   93  9 11
prn   3d rss (m)
  1       5.9        5.8        6.7        7.3        5.6        5.7        6.5 
  2       6.6       11.4        6.0        6.1       10.0       13.8       11.9 
  3       9.7        9.1        8.4       12.4       10.8        8.1        6.5 
  7       8.4        9.6       11.8       10.5        9.5        9.5        8.9 
  9       7.4        7.7        6.2        5.1        6.4        4.6        3.3 
 12       2.1        2.3        2.6        3.3        3.2        1.8        1.5 
 13       3.9        8.4        4.6        5.2        4.4        6.5        5.3 
 14       7.1        5.7        5.8        6.6        5.4        6.0        6.5 
 15       5.1        8.4        9.0        5.6        3.4        4.8        5.4 
 16      10.4        9.8       12.1       12.4       11.6       13.5       12.6 
 17       5.4        6.5        3.0        7.9        5.2        5.0        5.1 
 18       9.2       10.6       10.4        9.9        7.6        7.4        6.4 
 19       3.6        3.7        5.6        5.7        4.2        5.5        5.9 
 20       5.8        3.7        3.1        3.6        2.9        2.9        7.0 
 21      10.5       12.9        7.9        7.8        7.2        7.0        7.1 
 22      11.1       10.0       10.6        9.0       14.8        8.9       10.8 
 23      27.1       25.8       12.4        8.4       10.5        9.4        4.6 
 24      11.8       14.7       11.5       10.5       11.7       11.1       11.4 
 25       9.8        8.0        8.3        9.0       10.9       10.1        6.9 
 26       3.9        5.1        5.4        5.3        4.9        3.9        4.3 
 27       7.2        5.6        5.6        6.6        6.1        5.7        5.9 
 28       5.0        4.1        7.2        5.2        4.7        3.8        4.5 
 29      (n/a)    (excluded) (excluded)   #6.7        5.8        6.2        6.9 
 31       5.7        5.1        5.6        7.2        6.1        5.8        5.5 
_______________________
#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 713 (1993 Sep 05 - Sep 11)
      93  9  5   93  9  6   93  9  7   93  9  8   93  9  9   93  9 10   93  9 11
Fiducials 8.1        8.2        7.8        7.8        6.9        7.8        7.9
Total    35.1       36.3       36.5       35.7       31.5       38.3       39.1
END SITE SUMMARY TABLE

JPL GROUND STATION INCLUSION TABLE           GPS week 713 (1993 Sep 05 - Sep 11)
      93  9  5   93  9  6   93  9  7   93  9  8   93  9  9   93  9 10   93  9 11
site    % data
ALBH      105        107        105        106         99        110        110
ALGO*     106        106         96         97         97        109        108
BRMU      106         97         63         88          0        107         75
DRAO      108        110        109        109        101        112        111
FAIR*      87         91         87         70          0         22         36
FORT       93          0        111         99          0        116        111
GOLD       88         88         84         88         82         91         89
GRAZ       91          0         46         92         91        105        107
HART*     103        102        101        102         95        106        106
HERS      105        106        103        103         94        105        106
HOBA       88         90         87         85         85         95        105
JPLM      107        107        105         88          0          0         92
KIRU        0         71        105        104        105        105        104
KOKB*     107        106         98        103         98        111        110
KOSG      103         94        103        103        105        108        109
KOUR        0         96        109        107        111        112        110
MADR*     102         97         93         95         88        100        104
MASP        0         98        107        105        110        109        110
MATE       94         70         62         94         87         96         86
MCMU      113        103          0        100        119        119        118
MDO1      102        102        101        101         95         91         95
METS      104        108        109        107        108        107        110
NLIB       93         95         95         89         85         97         91
NYAL       14          1          0          0          0          0          0
ONSA      108        110         94        107        109        106        107
PIE1       88         89         90         89         83         93         91
PINY       91         92         92         87         68         88         92
QUIN        0         62         80          0         44         60         48
RCM4      107        109        108         96          0         88        108
SANT*     102        106        105        105         98        109        109
STJO      102        108        106        106         98        110        109
TAIW       81         87         89         90         79         88         89
TIDB       99         98         99         99         95        106        107
TROM*     105        108        103        105        114        115        116
USUD       96         96         96        103         96        103         98
VNDP      108        109        104        103        100        111        111
WEST      105        106         95          0         91        105        102
WETT       87         88         99         94         82         90        103
YAR1*     101        102        101         99         98        109        105
YELL      110        113        113         55         45        114        114
_______________________
*Indicates fiducial site; #indicates deweighted site.
END GROUND STATION INCLUSION TABLE