Subject: [IGSREPORT-1078] Wk 0754 JPL Analysis Report
From: D.C. Jefferson
Date: Fri, 8 Jul 1994 16:45:17 PDT

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IGS Electronic Report    Fri Jul  8 16:45:17 PDT 1994      Message Number 1078
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Author: D.C. Jefferson
Subject: Wk 0754 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0754 (DAYS 170-176, DATES 1994 Jun 19 - Jun 25)
******************************************************************************

Submitted by the JPL IGS/FLINN Analysis Team:

J F Zumberge, D C Jefferson, M B Heflin, M M Watkins, 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/0754.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename               contents
______________________________________________________________________________
jpl07547.sum           This text file.
jpl07547.erp           Earth rotation parameters for GPS week 754.
jpl0754[0-6].sp3       GPS ephemerides for GPS week 754, sp3 format.
______________________________________________________________________________

According to IGS Mail Message 651, there was a significant gap in the data
from ALGO on day 169.  We have changed our reference clock to FAIR on the
following day, 170, to accomodate our 30-hour arc processing strategy.

Satellites PRN01 and PRN21 were poorly modelled on day 170.  We have excluded
these satellites on this day only.

According to the file nanu1994.mes obtained from the IGS CBIS, PRN12 is
unusable beginning day 168 for an indefinite period.  We have deleted this
satellite from our processing for days 172-176.

On day 172, we include data from a new station, EISL (Easter Island, Chile). 
The following nominal coordinates were assumed, and the station locations were
estimated (unconstrained) this day:

    X = -1884949.4272 m,   Y = -5357598.7566 m,    Z = -2892889.1879 m

Days 171 and 176 were processed prior to our updating of IERS Bulletin B
nominal values.  This is manifested in the apparent discontinuities in UT1R-UTC
on these days.

Lastly, various data problems required that some days be re-processed this
week.  In order to expedite the analyses, a well-distributed subset of no more
than 20 stations was used for days 173-175 (Jun 22-24).

WARNING: Data from PRN01 and PRN21 excluded day 170 (Jun 19).
WARNING: FAIR (not ALGO) used as reference clock for day 170.
WARNING: Data from PRN12 excluded days 172-176 (Jun 21-25).

In the following table, UT1R-UTC are the assumed nominal values from IERS
Bulletin-B predicts; estimated LODR values are also included.  See IGS Mail
Message 97 for details.

JPL ERP TABLE                                GPS week 754 (1994 Jun 19 - Jun 25)
     MJD  XPole  Ypole UT1R-UTC  LODR Xsig Ysig UTsig LODsig Nr Nf Nt  Xrt  Yrt 
            10**-5"      usec    us/d  10**-5"    us   us/d            10**-5"/d
49522.50  15648  23579  -201454  1757   10   12     0     11 39 13 23 -161 -236 
49523.50  15446  23258  -210857  1526    7    8     0     10 41 11 25 -162 -195 
49524.50  15302  23033  -204898  1334    7    6     0      9 43 13 24 -146 -174 
49525.50  15080  22794  -206833  1146   13   13     0     22 19 13 24 -189 -179 
49526.50  14920  22560  -208829   932   11   10     0     20 19 13 24 -170 -197 
49527.50  14749  22386  -210771   911   13   12     0     22 19 13 24 -246 -168 
49528.50  14719  22207  -220381  1146    9    8     0     10 43 12 24 -195 -100 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 754:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 754 (1994 Jun 19 - Jun 25)
      94  6 19   94  6 20   94  6 21   94  6 22   94  6 23   94  6 24   94  6 25
prn   3d rss (m)
  1                  1.0        0.78       0.89       1.01       0.93       1.03
  2       0.77       0.69       0.64       0.69       0.69       1.15       0.69
  4       0.68       0.78       0.75       1.39       1.77       1.70       1.23
  5       0.49       0.54       0.54       0.44       0.57       0.62       0.61
  6       0.68       0.33       0.43       0.72       0.86       0.41       0.29
  7       0.57       0.52       1.06       0.78       1.44       1.74       1.39
  9       1.0        1.17       1.19       0.71       0.56       0.85       0.78
 12       0.9        0.8                                                        
 14       0.65       0.63       0.64       0.83       1.74       1.23       1.16
 15       0.6        0.87       1.51       1.44       1.11       1.27       1.47
 16       0.27       0.47       0.42       0.27       0.59       0.80       0.83
 17       0.70       0.47       0.29       0.49       0.77       1.31       1.86
 18       0.62       0.57       1.05       0.62       1.19       1.07       0.88
 19       0.55       0.62       0.97       1.07       0.68       0.82       0.64
 20       0.58       0.57       0.69       0.61       0.72       0.68       0.79
 21                  1.0        0.53       0.32       0.45       0.66       0.69
 22       0.62       0.99       1.39       1.14       1.93       0.90       1.33
 23       0.34       0.50       0.52       0.43       0.49       0.46       0.21
 24       0.76       0.97       1.08       0.84       1.05       1.23       1.20
 25       1.06       0.74       1.11       0.88       0.87       0.56       1.55
 26       0.26       0.15       0.46       0.41       0.61       0.79       1.14
 27       0.32       0.43       0.57       0.82       0.48       0.91       0.48
 28       0.44       0.41       0.26       0.48       0.38       0.36       1.02
 29       0.26       0.26       0.52       0.73       0.91       0.72       0.57
 31       0.76       0.68       0.43       0.53       0.47       0.39       0.48
_______________________
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
      94  6 19   94  6 20   94  6 21   94  6 22   94  6 23   94  6 24   94  6 25
prn   3d rss (m)
  1                  7.9        7.8        7.9        8.6        8.6        7.6 
  2       3.6        3.4        4.0        5.4        5.7        4.4        4.2 
  4       8.2        8.5        7.8        9.3       11.0        8.3        9.9 
  5      11.2        8.4        8.9       11.5       11.6       10.1       10.6 
  6       5.6        5.5        7.3        6.6        6.9        6.0        6.1 
  7       9.5        8.9        8.7       10.6       11.2       11.8       10.1 
  9      13.0       13.2       11.8       14.9       13.2       10.5        8.0 
 12      60.5       38.3                                                        
 14       3.6        4.3        5.3        5.1        4.3        5.0        4.8 
 15       6.3        9.9       10.2        4.2        7.0        6.0        6.2 
 16      11.0        8.5       11.2       12.3       15.3       12.6       15.8 
 17      10.3        7.9        6.8        5.9        6.6        9.0        9.1 
 18       9.7        8.0        8.3        7.8        7.5        8.9        9.7 
 19      12.3       10.6       11.2       10.8        9.8       12.7       11.3 
 20       3.2        3.1        3.4        4.2       11.2        4.3        3.4 
 21                 10.9        8.3        5.6        7.4        5.0        4.6 
 22       4.1        6.8        5.2        4.4        6.0        7.3        4.1 
 23       6.2        6.3        4.3        4.3        4.1        4.0        4.5 
 24       9.4        8.6        9.5       11.8       16.1       12.4       11.2 
 25       6.8        6.8        6.6        7.0        9.1       10.2        9.6 
 26       5.9        8.2        5.5        5.4        5.5        5.9        5.7 
 27       9.0       10.1       10.9        9.9        9.8       11.7       10.4 
 28       9.7        8.9        9.5       10.5       10.4        8.2        9.6 
 29       4.9        4.0        4.6        4.9        5.2        5.1        6.6 
 31       7.6        8.0        8.4        7.2        6.3        6.8        9.3 
_______________________
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 754 (1994 Jun 19 - Jun 25)
      94  6 19   94  6 20   94  6 21   94  6 22   94  6 23   94  6 24   94  6 25
Fiducial 11.2       11.8       12.8       12.0       13.1       12.4       11.9
Total    38.1       39.7       41.5       35.6       19.1       18.3       26.5
END SITE SUMMARY TABLE

JPL GROUND STATION INCLUSION TABLE           GPS week 754 (1994 Jun 19 - Jun 25)
      94  6 19   94  6 20   94  6 21   94  6 22   94  6 23   94  6 24   94  6 25
site    % data
ALBH #    108        106        106          0          0          0        106
ALGO*#     85        104        103        104        104        105        104
AREQ #    111        108        107        108        108        108        107
BRMU #     90         87        106          0          0          0        103
CHTP #     96        100         95          0          0          0         93
DRAO #    109        106        108          0          0          0        102
EISL #      0          0        103          0          0          0          0
FAIR*      94        107        106        105        106        105         97
FORT #    103        102        101        102        103        100        103
GODE #    107        107        106          0          0          0        105
GOLD*      56         79         92         59         69         90         89
GRAZ      104         96         63          0          0          0        106
HART*     102        105        108        108        105        105        105
HARV #    106        107        109          0          0          0         86
HERS      103        103        104          0          0          0         91
HOBA #      0        101        102        100        104        103        102
JPLM #    110        109        109          0          0          0        109
KIRU #      0        101        101          0          0          0        104
KOKB*      88         99        109        110        109         29          0
KOSG*      95          0         92        104        103        103        104
KOUR      102        101        104          0          0          0        103
MADR*      89        103         66         70        103        103        103
MAS1 #      0        105         83          0          0          0        107
MASP      106        105        108          0          0          0        106
MATE        0        107          0          0          0          0        106
MCMU #      0        112        109        109        111        112        112
MDO1 #    108        106        102          0          0          0         98
METS      106        104        102          0          0          0        104
NYAL      115        113        115          0          0          0        115
ONSA #     94          0         92         87         69        100        101
PAMA       81         94        100        102        101         99         98
PIE1 #     98        104        104          0          0          0        106
QUIN #    101        101        104          0          0          0        103
RCM5 #    107        106        106          0          0          0        106
SANT*      79         94         93         23         78         68         60
STJO #    110        105        106          0          0          0        106
TAIW      106        106        109          0          0          0        110
TIDB*      94        105        106        106        107        106        107
TROM*      88         83         82         90        105        109        110
TSKB #     95          0          0          0          0          0          0
USUD #    102         97        103          0          0          0         96
WEST #    106        103        101          0          0          0        105
WETT*     105        103        105        105        105        103         97
YAR1*      38         86        108        108        107        107        107
YELL*#    110        107        105        107        106        105        104
_______________________
*Indicates fiducial site; #indicates TurboRogue psuedo-range used
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 754 (1994 Jun 19 - Jun 25)
      94  6 19   94  6 20   94  6 21   94  6 22   94  6 23   94  6 24   94  6 25
comp log10(rms/ps)
PRN01                3          2.8        3.0        2.7        2.9        3.9
PRN02     6.5        6.5        3.4        2.9        4.0        3.0        3.8
PRN04     6.5        6.5        3.2        3.1        3.1        2.8        3.1
PRN05     6.5        6.5        3.0        3.0        3.0        3.0        3.1
PRN06     6.5        6.5        3.1        3.2        2.9        3.2        3.4
PRN07     6.5        6.5        3.3        2.8        2.6        3.2        3.7
PRN09     7          6.5        3.3        3.2        3.1        3.7        4.0
PRN12     7          7                                                         
PRN14     6.5        6.5        3.2        2.9        3.5        3.2        3.6
PRN15     7          6.4        3.7        3.4        3.3        3.5        4.1
PRN16     6.5        6.5        2.9        2.9        2.8        3.0        3.0
PRN17     6.5        6.5        2.7        2.7        2.6        2.8        3.2
PRN18     6.5        6.5        3.2        3.2        3.9        3.5        3.6
PRN19     6.5        6.5        3.3        3.4        4.0        3.2        3.5
PRN20     6.5        6.5        3.2        3.3        3.1        3.2        3.3
PRN21                3          2.8        3.2        3.2        3.0        3.6
PRN22     6.5        6.5        4.4        3.8        3.0        2.9        3.5
PRN23     6.5        6.5        3.0        2.9        3.4        3.5        3.5
PRN24     6.5        6.5        3.2        3.1        3.1        2.7        3.1
PRN25     6.5        6.4        3.2        3.4        3.2        3.1        3.6
PRN26     6.5        6.5        2.6        2.8        3.0        3.0        3.1
PRN27     6.5        6.5        3.4        2.9        3.1        3.6        3.2
PRN28     6.5        6.5        2.6        3.2        3.1        3.0        3.9
PRN29     6.5        6.4        2.9        2.8        3.0        3.0        3.2
PRN31     6.5        6.5        3.2        3.4        3.2        3.1        3.9
ALBH      6.5        6.5        3                                              
AREQ      6.5        6.5        2.6        2.9        3.1        2.8        3.3
BRMU      7          6.5        2                                              
CHTP      6.5        6.5        3                                              
DRAO      6.5        6.5        3                                              
FAIR                 4          3.9        3.5        3.1        2.6        3.5
FORT      6.5        6.5        2.7        3.0        3.0        3.3        3.2
GODE      6.5        6.5        2                                              
GOLD      6          6.5        3.6        4          3          3.3        3.5
GRAZ      6.5        6.5                                                       
HART      6.5        6.5        3.8        3.5        3.8        3.5        3.8
HARV      6.5        6.5        2                                              
HERS      6.5        6.5        4                                              
HOBA                 2          2.5        3.2        2.8        2.9        3.6
JPLM      6.5        6.5        2                                              
KIRU                 3          2                                              
KOKB      6.5        6.5        4.1        3.1        3.5        3             
KOSG      3                     3          3.9        4.1        4.0        3.8
KOUR      6.5        6.5        4                                              
MADR      6.5        6.5        4          4          4.0        3.6        3.7
MAS1                 3          3                                              
MASP      6.5        6.5        4                                              
MCMU                 3          2.8        3.1        3.1        3.3        4.2
MDO1      6.5        6.5        3                                              
METS      6.5        6.5        3                                              
NYAL      7          6.5        3                                              
ONSA                            3          3          3          3.0        3.1
PAMA      6.5        6.5        3.5        3.8        3.8        3.4        3.5
PIE1      6.5        6.5        2                                              
QUIN      6.5        6.5        3                                              
RCM5      6.5        6.5        2                                              
SANT      6.5        6.5        4          3          3.7        3.7        3  
STJO      6.5        6.5        3                                              
TAIW      6.5        6.5        3                                              
TIDB      6.5        6.4        3.4        3.2        3.6        3.7        3.9
TROM      6.5        6.5        4.0        4.2        4.2        4.1        4.3
TSKB      2                                                                    
USUD      6.5        6.5        3                                              
WEST      6.5        6.5        2                                              
WETT      7          6.5        3.5        3.7        3.9        3.3        3.6
YAR1      4          6.4        3.8        3.3        3.4        3.1        3.7
YELL      6.5        6.5        2.3        2.9        2.7        3.0        3.0
_______________________
END CLOCK REPEATABILITY TABLE