Subject: [IGSREPORT-394] JPL07027.SUM
From: G. Blewitt
Date: 22 JUL 1993 08:38:15

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IGS Electronic Report     22-JUL-1993 08:38:15       Message Number 394
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From: G. Blewitt
Subj: JPL07027.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
______________________________________________________________________________
jpl07027.sum           This text file.
jpl07027.erp           Earth rotation parameters for GPS week 702.
jpl07027.sp1           GPS ephemerides for GPS week 702, sp1 format.
jpl07027.sp3            "       "       "   "   "    " , sp3   "   .
______________________________________________________________________________

Due to reported AS testing, various ground receivers were tracking in cross-
correlated mode from 09:49:00 to 15:01:30 UT on Jun 21 (day 172), and from
00:34:00 to 03:10:30 UT on Jun 22. Only PRN18/GPS18 was affected. Because of
this, all cross-correlated data was excluded from analysis on day 172, and
all data from PRN18 was deweighted on day 173.

We continue to deweight tracking data from PRN07/GPS37. Day-to-day orbit
repeatabilities remain at the few-meter level.

Data from MCMU has been deleted for the analysis of Jun 24; inclusion of
corrupt data from this site caused highly anomalous results.

WARNING: Data from PRN07/GPS37 have been deweighted for the entire GPSweek 702.
WARNING: Data from PRN18/GPS18 have been deweighed for day 173 (Jun 22).
WARNING: Data from MCMU have been deleted for day 175 (Jun 24).

JPL LODR TABLE                               GPS week 702 (1993 Jun 20 - Jun 26)
  MJD       LODR     +/-
          (ms/day)
 49158.5    1.98     0.04
 49159.5    1.75     0.04
 49160.5    2.07     0.04
 49161.5    2.06     0.04
 49162.5    2.13     0.04
 49163.5    2.08     0.04
 49164.5    2.00     0.04
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 702 (1993 Jun 20 - Jun 26)
  MJD       X        Y       UT1R-UTC XSIG    YSIG   UTSIG  RMS  XYC  XUC  YUC STA SAT PASS    
           ''        ''        sec     ''     ''      sec
 49158.5  -.04755   .19953  -.38089  .00012  .00013  .00000  .0  .01  .00  .00  40 23  0
 49159.5  -.05012   .20063  -.38284  .00013  .00013  .00000  .0 -.01  .00  .00  41 23  0
 49160.5  -.05187   .20115  -.38476  .00013  .00014  .00000  .0 -.02  .00  .00  39 23  0
 49161.5  -.05298   .20223  -.38665  .00012  .00013  .00000  .0 -.02  .00  .00  39 23  0
 49162.5  -.05411   .20358  -.38851  .00013  .00015  .00000  .0  .03  .00  .00  39 23  0
 49163.5  -.05530   .20460  -.39036  .00013  .00014  .00000  .0 -.02  .00  .00  40 23  0
 49164.5  -.05558   .20606  -.39220  .00013  .00015  .00000  .0  .01  .00  .00  39 23  0
END UTPM TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 702:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 702 (1993 Jun 20 - Jun 26)
      93  6 20   93  6 21   93  6 22   93  6 23   93  6 24   93  6 25   93  6 26
prn   3d rss (m)
  1       0.42       0.30       0.34       0.28       0.28       0.31       0.44
  2       0.19       0.22       0.32       0.17       0.34       0.20       0.21
  3       0.26       0.20       0.17       0.22       0.18       0.09       0.19
  7      #3.93      #6.45      #5.15      #4.00      #2.67      #7.21      #5.24
 12       0.36       0.51       0.31       0.44       0.52       0.68       0.59
 13       0.25       0.13       0.21       0.25       0.26       0.59       0.29
 14       0.34       0.36       0.55       0.51       0.26       0.18       0.34
 15       0.41       0.46       0.41       0.27       0.41       0.31       0.44
 16       0.30       0.16       0.21       0.18       0.13       0.16       0.11
 17       0.25       0.19       0.15       0.12       0.15       0.11       0.19
 18       0.22       4.04      #4.13       4.16       0.21       0.27       0.21
 19       0.22       0.14       0.21       0.30       0.15       0.18       0.25
 20       0.30       0.42       0.44       0.47       0.41       0.52       0.33
 21       0.29       0.37       0.29       0.24       0.24       0.21       0.30
 22       0.19       0.29       0.37       0.36       0.24       0.21       0.30
 23       0.32       0.21       0.26       0.29       0.34       0.18       0.19
 24       0.14       0.11       0.10       0.30       0.20       0.19       0.17
 25       0.23       0.27       0.37       0.40       0.12       0.19       0.22
 26       0.26       0.14       0.30       0.22       0.09       0.31       0.39
 27       0.27       0.24       0.30       0.20       0.25       0.13       0.26
 28       0.40       0.44       0.27       0.17       0.31       0.31       0.27
 29       0.20       0.51       0.48       0.30       0.32       0.27       0.26
 31       0.68       0.70       0.41       0.41       0.41       0.49       0.29
_______________________
#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  6 20   93  6 21   93  6 22   93  6 23   93  6 24   93  6 25   93  6 26
prn   3d rss (m)
  1       8.6        8.3        9.5        9.6        6.8        7.2        8.2 
  2      10.6        6.5        5.7        5.9        6.2        6.9        4.5 
  3       9.6        9.8        8.9        9.8       11.3       10.6        8.7 
  7      #3.9       #1.7       #5.2       #3.0       #2.0       #2.0       #4.6 
 12       3.3        3.1        6.5       14.2       20.3       15.5       15.1 
 13       6.1        5.6        6.2        4.8        5.9        5.8        7.2 
 14       3.9        3.7        4.6        4.2        4.5        3.9        3.9 
 15       7.6        7.0        4.8       13.9       17.4        6.1        6.1 
 16       7.5        5.9        7.2        6.0        4.5        4.6        5.2 
 17       7.4        5.9        7.2        8.3        5.0        6.0        5.8 
 18      12.5        9.1       #1.7       11.6       20.2       10.9        6.2 
 19       8.8        9.1        6.9        6.0        8.8        8.4        4.8 
 20       3.2        3.4        2.6        2.9        3.6        3.7        4.5 
 21       4.1        3.4        7.1        6.2        3.9        4.2        5.2 
 22       6.1        6.4        6.7        7.9        7.7        7.8        6.7 
 23       2.6        3.9        3.3        9.0        8.8        3.5        3.9 
 24      12.1       11.9        8.8        8.0        7.1        7.6       11.6 
 25       5.2        5.0        4.3        4.9        4.3        5.1        5.0 
 26       4.1        2.8        2.6        3.0        6.0        3.2        2.6 
 27      10.6        9.9        9.1        7.7        8.9        7.4        9.5 
 28       5.7        5.2        5.2        4.6        4.3        2.8        3.0 
 29       5.5        5.5        6.5        6.1        5.1        4.2        0.0 
 31      14.0       12.4       16.7       14.8       11.3       24.2       31.1 
_______________________
#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 702 (1993 Jun 20 - Jun 26)
      93  6 20   93  6 21   93  6 22   93  6 23   93  6 24   93  6 25   93  6 26
Fiducials 7.5        7.2        7.0        7.3        7.3        7.1        7.4
Total    34.8       33.6       33.3       35.1       35.7       36.5       35.3
END SITE SUMMARY TABLE

JPL GROUND STATION INCLUSION TABLE           GPS week 702 (1993 Jun 20 - Jun 26)
      93  6 20   93  6 21   93  6 22   93  6 23   93  6 24   93  6 25   93  6 26
site    % data
ALBH       97          0         95         99         99         99        100
ALGO*      97         89         90         96         96         96         96
BRMU      101         94         90         96         89         58         97
DRAO      100         98         88        100         99         94         97
FAIR*      94         82         78         83         81         81         82
FORT       97         86         82        108         78        111         84
GOLD       94         90         88         72         89         91         91
GRAZ       98         95         53         88         99         98         98
HART*      96         95         89         98         91         62         98
HERS      101         96         92         99         98         97         99
HOBA       79        103         99        102        101        100         87
JPLM       72         56         58         58         59         66         99
KOD1       97         84         55         38         98         94         98
KOKB*      88        100         99        103        102        105        103
KOSG       87         64         92         96         77         85         98
KOUR       81         98         95        103        104        103        103
MADR*      79         57         55         59         59         59         59
MASP       96         98         90        101         99        100         90
MATE      103         92         79          0         84         92         90
MCMU      109        113        108        115          0        104         23
MDO1       29         93         92         96         94         91         86
METS       98        100         94        103        104        106        104
NLIB       97         91         89         90         93         92         92
NYAL       37          8          0         76        104         99         87
ONSA       99         99         95        100        102        102        102
PAMA       98         96         95        100         96         94         92
PIE1       92         73         87         99         98        100         97
QUIN       91         79         83         92         98         90         89
RCM2       98         95         91         91         96         89          0
SANT*      95         91         90         96         97         97         95
STJO       90         94         91         98         99         97         98
TAIW       95         85         83         84         86         87         87
TIDB       94        103        100        103        104        104        103
TROM*     103        102         99        103        110        107        112
USUD        0          1          0          0          0          0          0
VNDP       83         99         98        102        102        102        102
WEST       70         95         91         97         97         97         95
WETT       89         61         81         72         92         95         90
YAR1*     102        102         96         94         95         99         98
YELL       59        101         99        103        103        105        105
_______________________
*Indicates fiducial site; #indicates deweighted site.
END GROUND STATION INCLUSION TABLE