Subject: [IGSREPORT-0733] JPL Analysis Report (week 728)
From: David C. Jefferson
Date: Mon, 24 Jan 1994 14:31:55 PST

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IGS Electronic Report    Mon Jan 24 14:31:55 PST 1994      Message Number 0733
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Author: David C. Jefferson
Subject: JPL Analysis Report (week 728)

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JPL ANALYSIS REPORT   GPS-WEEK 0728 (DAYS 353-359, DATES 19-12-93 TO 25-12-93)
******************************************************************************

Submitted by the JPL IGS/FLINN Analysis Team:

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

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

Files listed below are available in Unix compressed format and can be
retrieved using anonymous ftp to sideshow.jpl.nasa.gov (128.149.70.41),
directory pub/jpligsac/0728.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename               contents
______________________________________________________________________________
jpl07287.sum           This text file.
jpl07287.erp           Earth rotation parameters for GPS week 728.
jpl0728[0-6].sp3       GPS ephemerides for GPS week 728, sp3 format.
______________________________________________________________________________

Please note that days 353 and 359 (Dec 19, 25) were analyzed using ITRF91
site coordinates and velocities, with only 8 fiducial stations, as they were
processed before we officially switched to the ITRF92 reference frame with 13
constrained sites (see jpl07297.sum, jpl07307.sum).  All other days were
processed using the newer strategy.

Additionally, with posterior knowledge of the Northridge Earthquake (Jan 17,
1994), we chose to estimate the position of GOLD (Goldstone, California), rather
than use it as one of the 13 established fiducials, on days 354-358 (Dec 20-24).
As mentioned above, the other two days of the week were processed using the old
reference frame, and GOLD was estimated automatically.  Motion of GOLD induced
by the earthquake is expected to be much less than 1 mm; the removal of GOLD as a fixed site, in retrospect, is not necessary.

In order to reduce the cpu time required for processing, we have used a smaller,
well-distributed subset of 31 stations for days 354-358; sites not used on
these days do not necessarily reflect a problem at those locations.

WARNING: Because of the Northridge Earthquake (day 1994/017), GOLD was not used
         as a fiducial (constrained) site for the entire GPS week 728.
WARNING: Data from PRN04/GPS34 and PRN07/GPS37 were deleted on day 353 (Dec 19).

JPL LODR TABLE                               GPS week 728 (1993 Dec 19 - Dec 25)
  MJD       LODR     +/-
          (ms/day)
 49340.5    2.59     0.04
 49341.5    2.52     0.04
 49342.5    2.62     0.04
 49343.5    2.63     0.04
 49344.5    2.60     0.04
 49345.5    2.65     0.04
 49346.5    2.66     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 728 (1993 Dec 19 - Dec 25)
  MJD       X        Y       UT1R-UTC XSIG    YSIG   UTSIG  RMS  XYC  XUC  YUC STA SAT PASS    
           ''        ''        sec     ''     ''      sec
 49340.5  -.01148   .47129   .22603  .00013  .00014  .00000  .0  .10  .00  .00  40 24  0
 49341.5  -.01080   .47203   .22684  .00012  .00013  .00000  .0  .02  .00  .00  30 26  0
 49342.5  -.00824   .47318   .22430  .00012  .00013  .00000  .0  .02  .00  .00  30 26  0
 49343.5  -.00570   .47435   .22177  .00012  .00013  .00000  .0  .00  .00  .00  29 26  0
 49344.5  -.00338   .47532   .21926  .00012  .00013  .00000  .0  .00  .00  .00  29 26  0
 49345.5  -.00058   .47644   .21675  .00012  .00013  .00000  .0 -.02  .00  .00  30 26  0
 49346.5   .00203   .47700   .21426  .00011  .00011  .00000  .0  .02  .00  .00  41 26  0
END UTPM TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 728:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 728 (1993 Dec 19 - Dec 25)
      93 12 19   93 12 20   93 12 21   93 12 22   93 12 23   93 12 24   93 12 25
prn   3d rss (m)
  1       0.47       0.33       0.18       0.40       0.34       0.35       0.30
  2       0.24       0.46       0.23       0.23       0.19       0.39       0.28
  3       0.40       0.24       0.25       0.24       0.51       0.34       0.39
  4                  0.3        0.36       0.48       0.57       0.59       0.65
  5       0.48       0.42       0.34       0.43       0.41       0.35       0.34
  7                  0.2        0.17       0.14       0.19       0.17       0.19
  9       0.52       0.30       0.39       0.40       0.34       0.35       0.49
 12       0.78       0.89       0.93       0.62       0.70       0.57       0.49
 13       0.57       0.57       0.35       0.35       0.43       0.24       0.26
 14       0.69       0.42       0.46       0.32       0.26       0.32       0.30
 15       0.21       0.20       0.27       0.43       0.34       0.31       0.30
 16       0.40       0.18       0.22       0.18       0.21       0.31       0.23
 17       0.24       0.27       0.31       0.37       0.60       0.23       0.40
 18       0.34       0.17       0.26       0.34       0.33       0.27       0.23
 19       0.29       0.18       0.22       0.19       0.11       0.09       0.18
 20       0.69       0.41       0.39       0.52       0.56       0.55       0.44
 21       0.40       0.25       0.22       0.17       0.35       0.49       0.39
 22       0.14       0.11       0.14       0.17       0.21       0.16       0.26
 23       0.82       0.65       0.37       0.22       0.57       0.66       0.74
 24       0.33       0.38       0.20       0.24       0.95       0.64       0.28
 25       0.22       0.39       0.24       0.30       0.40       0.18       0.23
 26       0.36       0.47       0.47       0.28       0.19       0.37       0.24
 27       0.20       0.13       0.13       0.10       0.12       0.17       0.13
 28       0.40       0.31       0.36       0.19       0.25       0.19       0.18
 29       0.28       0.20       0.23       0.25       0.32       0.21       0.23
 31       0.48       0.36       0.19       0.21       0.19       0.09       0.19
_______________________
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 12 19   93 12 20   93 12 21   93 12 22   93 12 23   93 12 24   93 12 25
prn   3d rss (m)
  1       3.2        4.5        4.2        5.0        6.3        7.5        4.9 
  2       3.8        4.6        6.0        6.4        5.2        7.7        8.3 
  3      14.5       14.0       13.5       13.4       14.4       15.1       14.0 
  4                 10.3        8.4        6.4        6.2        8.5        6.0 
  5      11.7        7.6        7.0        6.7        7.7        4.8        5.6 
  7                  7.9        3.9        4.3        8.4        8.4        5.0 
  9       4.8        4.3        4.2        5.4        4.0        4.5        4.0 
 12       3.9        3.7        4.6        5.4        5.2        3.5        3.6 
 13       7.4        6.4        6.1        6.3       10.8        8.7        8.5 
 14       2.2        5.8        4.9        4.5        4.4        3.6        5.3 
 15       3.3        3.5        3.8        4.0        4.1        4.2        3.3 
 16       5.4        5.7        3.1        3.7        4.7        3.1        4.8 
 17       4.1        2.7        3.1        3.4        3.6        3.7        4.1 
 18       6.8        5.2       11.8       14.3        8.4        7.3        7.3 
 19       7.8        6.4        5.6        8.0        8.9        7.2        5.6 
 20       5.0        5.9        5.4        5.8        5.9        4.9        3.8 
 21       4.2        3.0        2.1        3.2        3.7        2.9        2.7 
 22       8.1       10.8       10.1        7.9       10.5       10.1        8.6 
 23       3.8        3.9        3.6        5.8        6.1        3.9        4.6 
 24       7.1        7.3        7.1        6.8        7.1        7.5        5.7 
 25       8.6        9.0        7.9        6.0        7.7        8.4        8.2 
 26       6.7        6.9        6.4        6.6        6.7        7.1        7.7 
 27      11.4       12.3       13.0       13.7       11.9        9.4        9.0 
 28       5.4        5.1        3.7        3.1        3.4        3.6        3.3 
 29       4.9        4.6        6.0        6.4        6.1        6.7        7.7 
 31       9.3        8.7        8.0        6.9        7.6        6.8        5.7 
_______________________
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 728 (1993 Dec 19 - Dec 25)
      93 12 19   93 12 20   93 12 21   93 12 22   93 12 23   93 12 24   93 12 25
Fiducial 10.9       11.9       12.1       12.1       12.1       12.1       11.3
Total    36.7       29.7       30.1       29.0       28.9       29.2       40.2
END SITE SUMMARY TABLE

JPL GROUND STATION INCLUSION TABLE           GPS week 728 (1993 Dec 19 - Dec 25)
      93 12 19   93 12 20   93 12 21   93 12 22   93 12 23   93 12 24   93 12 25
site    % data
ALBH      102          0          0          0          0          0        111
ALGO*      94        100        109        109        110        110        110
BRMU       86          0          0          0          0          0         89
DRAO      104        114        113        113        114        114        114
FAIR*     107        117        118        118        118        119        118
FORT       96          0          0          0          0          0        111
GODE      100          0          0          0          0          0         92
GOLD       95        101        100        101         99         99         98
GRAZ      104          0          0          0          0          0        111
HART*     102        112        110        111        111        111        110
HERS      101          0          0          0          0          0        107
HOBA       86          0          0          0          0          0        111
JPLM      105        113        112        113        113        113        112
KIRU      101          0          0          0          0          0        103
KOKB*      99        108        110        114        113        114        106
KOSG*      95        104        109        102        102        105         85
KOUR      100        109        106        105        108        108         87
MADR*     102        109        105        106        105        104         55
MASP      104        111        112        110        112        111        111
MATE       93          0          0          0          0          0        112
MDO1      101        101        103        100        104        107        107
METS      100          0          0          0          0          0        110
NLIB       86         92         86         90         42         40         27
NYAL       43         71        105          0          0         56        113
ONSA      101          0          0          0          0          0          0
PAMA        0         95        102        107        108        107        106
PIE1      101        106        107        106        107        106        106
QUIN       74        105         93         85        109         77         96
RCM5      100        101        101        108        107        108        105
SANT*     104        110        111        111        111        111        112
STJO      103        111        111        111        111        111        111
TAIW       85        108        112        112        112        112        107
TIDB      100        111        113        112        113        113        112
TROM*      93        109        113        108        115        113        113
USUD       99        108        105        106        102         99         97
VNDP        0        110        111        110        111        111        109
WEST      100          0          0          0          0          0         97
WETT      103        109        111        110        109        110        110
YAR1*      99        109        111        112        111        112        111
YELL*     101        112        112        114        115        115        115
_______________________
*Indicates fiducial site; #indicates deweighted site.
END GROUND STATION INCLUSION TABLE

As described in IGS Report No. 634, the table below indicates the repeatability
of clock solutions for all satellites and stations used in this week's analysis:

JPL CLOCK REPEATABILITY TABLE                GPS week 728 (1993 Dec 19 - Dec 25)
      93 12 19   93 12 20   93 12 21   93 12 22   93 12 23   93 12 24   93 12 25
comp log10(rms/ps)
PRN01     2.4        2.8        2.6        2.6        2.2        2.4        2.7
PRN02     3.0        2.8        2.6        2.1        2.6        2.4        2.8
PRN03     2.6        2.6        2.8        2.7        2.9        2.4        2.8
PRN04                3          2.9        3.0        3.2        2.5        3.0
PRN05     2.8        2.4        2.5        2.7        2.5        2.5        2.7
PRN07                2          2.9        2.5        2.7        2.4        2.3
PRN09     2.8        2.5        2.8        2.6        2.6        2.9        2.6
PRN12     3.2        3.3        3.2        3.0        3.0        2.6        2.6
PRN13     3.0        2.7        2.8        2.8        2.8        2.6        2.7
PRN14     2.8        2.7        2.8        2.7        2.7        2.8        2.7
PRN15     2.9        2.6        2.9        2.9        2.7        2.6        2.9
PRN16     2.7        2.3        2.6        2.2        2.2        2.4        2.8
PRN17     3.0        2.5        2.7        3.0        3.1        2.7        2.5
PRN18     2.5        2.3        2.6        2.3        2.6        2.5        2.4
PRN19     2.8        2.6        2.9        2.7        2.8        2.4        2.5
PRN20     2.9        2.7        2.9        2.8        2.9        2.5        2.7
PRN21     2.6        2.8        2.4        2.8        2.8        2.6        2.8
PRN22     2.9        2.7        2.6        2.5        2.9        2.7        2.6
PRN23     2.8        2.7        2.7        2.6        2.5        2.4        2.9
PRN24     2.7        2.4        2.8        2.6        3.1        2.6        2.9
PRN25     2.5        2.8        2.6        2.8        3.0        2.6        2.6
PRN26     2.7        2.5        2.8        2.4        2.4        2.6        2.7
PRN27     2.7        2.9        2.9        2.7        2.9        2.4        2.4
PRN28     2.6        2.7        2.9        2.6        2.8        2.7        2.4
PRN29     2.1        2.4        2.4        2.1        2.5        2.4        2.4
PRN31     2.9        2.9        2.8        2.6        2.7        2.6        2.2
ALBH      2                                                                    
BRMU      2                                                                    
CANB      2.5        2.5        2.5        2.5        2.4        2.3        2.3
FAIR      2.4        2.6        2.7        2.3        2.4        2.6        1.9
FORT      2                                                                    
GODE      2                                                                    
GOLD      2.6        2.3        2.4        2.4        2.3        2.2        2.0
GRAZ      2                                                                    
HART      2.5        2.7        2.5        2.4        2.1        2.7        2.3
HARV      2.8        2.3        2.5        1.8        2.4        2.3        2.5
HERS      3                                                                    
HOBA      2                                                                    
JPLM      2.7        2.3        2.5        2.5        2.2        2.2        2.1
KIRU      2                                                                    
KOKB      3.9        3.6        4.0        3.0        3.8        3.5        3.6
KOSG      2.3        1.5        2.2        2.4        2          2.1        2.3
KOUR      2.7        3.0        3.1        3.0        2.5        3.0        2.8
MADR      2.2        2.3        2.0        2.5        1.9        2.2        2.3
MASP      3.5        3.3        3.4        3.8        3.5        3.2        3.2
MATE      3                                                                    
MDO1      3.0        2.8        2.7        2.7        2.9        2.9        2.8
METS      3                                                                    
NALL      3          2.1        2                                2          2.3
NLIB      3.3        2.7        2.9        3.0        2.7        3.1        2  
ONSA      2                                                                    
PAMA                 3          2.5        2.6        2.2        2.5        2.3
PENT      2.3        1.8        2.5        2.3        1.9        2.1        1.6
PIE1      2.7        2.6        2.5        2.6        2.5        2.6        2.5
QUIN      2.9        2.8        2.8        2.9        2.9        2.9        2.7
RCM5      2.5        2          2.3        2.6        2.5        2.7        2.6
SANT      2.9        3.0        2.7        2.6        2.9        2.6        2.2
STJO      3.1        3.0        2.6        3.2        3.1        3.6        3.0
TAIS      2          2.4        2.5        2.5        2.4        2.1        2.5
TROM      2.7        2.1        2.8        2.3        2.3        2.4        2.6
USUD      2.5        2.5        2.6        2.4        2.4        1.9        2.5
VNDP                 2          2.4        2.5        2.2        2.3        2.2
WEST      3                                                                    
WETB      2.7        1.9        2.2        2.5        2.0        2.0        2.6
YAR1      2.7        2.4        2.5        2.5        2.3        1.9        2.5
YELL      2.2        2.3        2.5        2.6        2.2        2.5        2.2
_______________________
END CLOCK REPEATABILITY TABLE