Subject: [IGSREPORT-295] JPL Analysis Report (week 694)
From: G. Blewitt
Date: 27 MAY 1993 08:11:54

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IGS Electronic Report     27-MAY-1993 08:11:54       Message Number 295
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From: G. Blewitt
Subj: JPL Analysis Report (week 694)
-----------------------------------

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
______________________________________________________________________________
jpl06947.sum           This text file.
jpl06947.erp           Earth rotation parameters for GPS week 694.
jpl06947.sp1           GPS ephemerides for GPS week 694, sp1 format.
jpl06947.sp3            "       "       "   "   "    " , sp3   "   .
______________________________________________________________________________

Beginning this week, data from PRN22/GPS22 and PRN31/GPS31 are weighted
normally.

According to the file gpstd.txt obtained from tycho.usno.navy.mil, "A-S testing
occured during the period 28 Apr 1200 UT to 03 May 0000 UT". Our analyses
include all cross-correlated data, and have been processed using our AS
processing strategy (see jpl06967.sum). 

This week's analysis begins the inclusion of data from the global network
station GGAO (Goddard Geophysical and Astronomical Observatory, Greenbelt,
Maryland, USA; see IGS Mail Message #233 for details). The following nominal
coordinates were assumed, and the station locations were estimated (uncon-
strained) each day:

    X =  1130774.0370 m,    Y =-4831253.5470 m,    Z =  3994200.3740 m

Beginning this week, JPL includes a SITE SUMMARY TABLE. This new table
summarizes the amount of data from the fiducial network and the total network
that is processed on each day. The values for each day are sums of the "% data"
in the ground station inclusion table divided by 100% and represent the number
of station days of data processed on a given day.

WARNING: No warnings for GPS week 694.

JPL LODR TABLE                               GPS week 694 (1993 Apr 25 - May 01)
  MJD       LODR     +/-
          (ms/day)
 49102.5    2.66     0.05
 49103.5    2.63     0.05
 49104.5    2.78     0.05
 49105.5    2.36     0.06
 49106.5    2.94     0.06
 49107.5    3.02     0.06
 49108.5    2.80     0.06
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 694 (1993 Apr 25 - May 01)
  MJD       X        Y       UT1R-UTC XSIG    YSIG   UTSIG  RMS  XYC  XUC  YUC STA SAT PASS    
           ''        ''        sec     ''     ''      sec
 49102.5   .05053   .16470  -.24230  .00013  .00014  .00000  .0 -.06  .00  .00  34 23  0
 49103.5   .04786   .16476  -.24487  .00013  .00013  .00000  .0 -.08  .00  .00  37 23  0
 49104.5   .04570   .16379  -.24743  .00014  .00016  .00000  .0  .03  .00  .00  38 23  0
 49105.5   .04628   .16323  -.24997  .00018  .00019  .00000  .0 -.04  .00  .00  40 23  0
 49106.5   .04135   .16641  -.25249  .00018  .00019  .00000  .0 -.12  .00  .00  39 23  0
 49107.5   .04103   .16454  -.25500  .00019  .00021  .00000  .0 -.07  .00  .00  41 23  0
 49108.5   .03748   .16496  -.25750  .00018  .00020  .00000  .0 -.09  .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 694:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 694 (1993 Apr 25 - May 01)
      93  4 25   93  4 26   93  4 27   93  4 28   93  4 29   93  4 30   93  5  1
prn   3d rss (m)
  1       0.33       0.37       0.29       2.69       4.34       2.89       3.26
  2       0.33       0.32       0.53       1.03       1.16       1.80       2.50
  3       1.05       0.44       0.34       2.45       2.02       4.15       4.13
 11       0.54       0.50       0.96       1.61       2.34       2.58       1.49
 12       0.58       0.27       0.48       1.23       1.57       2.85       3.19
 13       0.50       0.26       0.44       1.15       1.20       1.31       4.20
 14       0.71       0.17       0.70       2.70       3.17       1.77       2.84
 15       0.22       0.32       0.63       1.11       2.07       3.35       2.26
 16       1.46       0.44       0.71       5.91       5.20       3.75       8.61
 17       0.55       0.59       0.57       4.37       7.27       5.12      13.14
 18       0.64       0.64       0.58       0.77       1.30       2.55       3.09
 19       0.33       0.23       1.21       1.79       1.88       3.16       3.40
 20       0.36       0.56       0.91       8.36       1.68       1.05       8.46
 21       0.47       0.30       0.54       3.25       3.45       4.34       2.47
 22       9.54       0.62       0.62       1.32       1.94       5.07      10.95
 23       0.78       0.33       0.56       4.55       7.82       5.18       2.24
 24       0.61       0.31       0.42       0.67       1.63       2.46       2.97
 25       0.40       0.49       3.87       1.89       3.94       6.07       6.39
 26       0.67       0.36       0.46       3.13       5.68       3.87       4.44
 27       0.41       0.42       0.48       1.79       2.46       1.19       2.43
 28       0.64       0.48       1.90       2.32       2.85       4.12       4.78
 29       0.39       0.28       0.51       1.38       0.78       9.69       6.54
 31      17.11       0.49       1.34       1.56       1.44       3.27       1.81
_______________________
#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  4 25   93  4 26   93  4 27   93  4 28   93  4 29   93  4 30   93  5  1
prn   3d rss (m)
  1      12.4        9.5        6.5       10.6       11.4       11.0       13.1 
  2       6.9        3.2        3.9        3.1        3.3        3.8        5.0 
  3       9.1        9.1        9.1        8.6       12.9       13.3        8.5 
 11       5.8        4.7        4.4        3.8        3.9        3.8        4.2 
 12       3.0        3.6       10.7        6.4        3.3        5.4       10.2 
 13       4.3        4.4        4.1        4.0        3.3        3.2        4.3 
 14       6.7        4.6        5.4        5.0        4.3        4.7        4.1 
 15       3.7        3.5        4.1        3.5        4.2        5.0        0.0 
 16       5.3        6.0        5.6        4.3        8.3        8.6        5.2 
 17       7.7        5.4        6.6        7.2        5.7        7.9        4.5 
 18      16.2       12.6       16.1       11.1       16.8       19.7        3.2 
 19       3.5        2.5        4.9        3.3        3.3        3.6        4.4 
 20       5.7        4.4       10.4        8.8        6.0        7.3        6.9 
 21       5.9        6.0        6.1        4.4        4.6        3.6        5.0 
 22       8.9        6.8        6.8        8.1        6.1        7.3        7.6 
 23       4.4        3.9        3.4        3.7        5.7        6.5        4.1 
 24       4.8        5.8        8.0        7.7        6.6        7.6        7.6 
 25       9.1        8.0        7.5        8.0        7.7        5.9        6.5 
 26       4.3        7.9       13.7        5.1        5.2        8.5       10.7 
 27       4.8        2.7        3.4        5.5        3.3        4.2        3.4 
 28       5.3        7.5        9.3       10.0       10.3        8.9        6.9 
 29      10.6        0.0        9.8        9.4        9.4       14.4       12.9 
 31      26.5       16.5       24.7       22.4       13.0        9.2        6.3 
_______________________
#Indicates deweighted satellite.
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

The following tables, as explained above and in IGS Report No. 99 respectively,
indicate the amount of global network tracking data used in this week's
analysis:

JPL SITE SUMMARY TABLE                       GPS week 694 (1993 Apr 25 - May 01)
      93  4 25   93  4 26   93  4 27   93  4 28   93  4 29   93  4 30   93  5  1
        stations
Fiducials 7.9        7.2        7.1        6.4        7.2        7.1        6.8
Total    33.3       36.7       36.7       34.7       35.2       35.0       34.9
END SITE SUMMARY TABLE

JPL GROUND STATION INCLUSION TABLE           GPS week 694 (1993 Apr 25 - May 01)
      93  4 25   93  4 26   93  4 27   93  4 28   93  4 29   93  4 30   93  5  1
site    % data
ALBH      114        114        114         99        100         99        100
ALGO*     113        114        115         93         92         88         97
BRMU        0        104         74         87        100         99         99
DRAO       91        112        116         91        102         96         96
FAIR*     108         28          0         24         97         98         97
GGAO        0         91         94         86         91         79         82
GOLD      102        103        103         93         93         90         85
GRAZ      118        106         75        104        105        104        106
HART*     114        122        122        108        108        108        106
HERS       46        115        118        104         89         92        103
HOBA      107        107         90         76          0         69         69
JPLM        0          0         15         92         72         80        100
KOKB*     116        118        118         98        100        101        102
KOSG      122        122        122        105        105        103        101
KOUR      126        124        125        101        100         99        101
MADR*      95         89        104        101        102        103        102
MASP      121        122        123         97         61        105        107
MATE      111        113        113        100        101        101        102
MCMU      129        133        135        118        118        118        117
METS        0         82        124        107        106        106        107
NLIB      103        103        104         89         88         83         84
NYAL        0         80        137        116        120        119        119
ONSA      125        124        123        106        106         99         86
PAMA      109        110        110         97         97         96         98
PIE1      115        115        114         81         99         98         98
QUIN      108        111        110         95        100         99        100
RCM2        0          0         38         96        102        101         96
SANT*     115        118        118        105        105         97         63
STJO      119        118        118        101         99        100         98
TAIW      116        115        115         97         92         90         92
TIDB      120        119        114        102         54          3         75
TROM*     133        133        128        108        111        111        114
USUD       71          0         80         90         92         48          0
VNDP      106        107        106         75         95         93         95
WEST        0          0          0          0          0         32          0
WETT       83         57         78         79        101        101        102
YAR1*     108        109          0         92        103         81         96
YELL      123        124        124        104        103        101         99
_______________________
*Indicates fiducial site; #indicates deweighted site.
END GROUND STATION INCLUSION TABLE