Subject: [IGSREPORT-4264] Wk 0927 JPL Analysis Report
From: D C Jefferson
Date: Fri, 24 Oct 1997 17:48:38 PDT

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IGS Electronic Report    Fri Oct 24 17:48:38 PDT 1997      Message Number 4264
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Author: D C Jefferson
Subject: Wk 0927 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0927 (DAYS 285-291, DATES 1997 Oct 12 - Oct 18)
******************************************************************************

Submitted by the JPL IGS/FLINN Analysis Team:

D C Jefferson, Y E Bar-Sever, M B Heflin, M M Watkins, F H Webb, J F Zumberge

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/0927.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09277.sum         This text file.
jpl09277.erp         Earth rotation parameters for GPS week 927.
jpl09277.snx         Ground station coordinates for GPS week 927, SINEX format.
jpl0927[0-6].sp3     GPS ephemerides for GPS week 927, sp3 format.
jpl0927[0-6].tro     Ground station troposphere estimates for GPS week 927.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 10.0 cm

We continue to deweight data from PRN13 this week.  Also, data from PRN09 did
not meet our initial orbit criteria on days 288-290.  We have excluded this
satellite from these days' analyses accordingly.

Due to potential problems, data from stations mentioned below were not
considered for use in the global solution for the day indicated.  (For
geographical reasons, they may not have been used in any case.)

WARNING: MKEA (not ALGO) used as reference clock day 290.
WARNING: Data from PRN13 deweighted the entire GPS week 927.
WARNING: Data from CAT1, CICE excluded day 286.
WARNING: Data from CAT1, CHUR, MAS1, SNI1, YAR1 excluded day 287.
WARNING: Data from PRN09, CAT1, IRKT, LMNO, MAS1, MEDI, ROCK, SELE, SNI1                 excluded day 288.
WARNING: Data from PRN09, CSN1, MAS1 excluded day 289.
WARNING: Data from PRN09, LONG, SANT excluded day 290.
WARNING: Data from CSN1, SANT excluded day 291.

In the following table, UT1R-UTC are the integrated values based on estimated
LODR values in the adjacent column.  See IGS Report No. 1498 (jpl07827.sum)
for details:

JPL ERP TABLE                                GPS week 927 (1997 Oct 12 - Oct 18)
     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
50733.50  22356  34832   364473  2172    3    4     9      9 37 10 26   94 -273 
50734.50  22447  34591   362299  2175    3    4     9      9 37  9 26   59 -281 
50735.50  22458  34326   360177  2070    4    4    10     10 37 10 26   74 -312 
50736.50  22515  34099   358106  2072    3    3    10     10 37 11 25   58 -313 
50737.50  22557  33819   356017  2106    3    4    10     10 37  8 25   30 -305 
50738.50  22572  33543   353881  2165    3    4    10     10 37 10 25   20 -314 
50739.50  22585  33222   351723  2152    3    4     9      9 37 10 26   66 -335 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 927:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 927 (1997 Oct 12 - Oct 18)
      97 10 12   97 10 13   97 10 14   97 10 15   97 10 16   97 10 17   97 10 18
prn   3d rss (cm)
  1       8         14         15          7         13         10         13   
  2       9         10         12         10         10          6          9   
  3      11         25         18         23         28         15         18   
  4       8          8         13         12          7          8          7   
  5       8          7         12         15         10          9          4   
  6      11          9         10         17         14          6          6   
  7       8          8         18          8         13          9         10   
  9      11          6          8                                           8   
 10       7         12         18         13          9         11          7   
 13      36         44         44         37         28         41         34   
 14      11         11         18         16          4         13         18   
 15      10         12         14         15         20         15         14   
 16       8          5         10          5          6          8          6   
 17      18         28         20          8          6          8          8   
 18       6          9          7         12          6          4          7   
 19      12         11         12         11         12         10         10   
 21      19         17         22         17         15          9         17   
 22       6         12         18         12          7          6          8   
 23      25         27         12         18         18         18         14   
 24       8          8         14         12          6          8          4   
 25       8         10         17         16         10          7         14   
 26       6         11         12         10          8          5         12   
 27       7          8         10          9         10          7         10   
 29       9         16         15          8          9          7          8   
 30       9          8          9         14         12          8         12   
 31      16         13         14         18         11         15         10   
_______________________
END ORBIT REPEATABILITY TABLE

The following table statistically summarizes this week's "engineering data", as
described in IGS Report No. 1528:

JPL ENGINEERING DATA SUMMARY TABLE           GPS week 927 (1997 Oct 12 - Oct 18)
 receiver/transmitter (dot means point positioned, * means fiducial site)
 |     days analyzed
 |     |      rms clock noise (ns)
 |     |      |           average clock solution (us)
 |     |      |           |           rms pseudorange (cm)
 |     |      |           |           |   (dot means pcode not analyzed)
 |     |      |           |           |           rms phase (mm)
 |     |      |           |           |           |           average arc (hr)
 |     |      |           |           |           |           |
 |___  |__    |_______    |_______    |___        |___        |__
ALBH   1.0    43.5        1.13        38.0        4.00        2.20    
ALGO*  7.0    .897e-01    1.72        43.9        4.04        2.99    
ANKR    .9    166.       -1.42        49.0        5.00        3.19    
AREQ   3.0    94.0       -.944        50.0        4.00        1.91    
ASC1   6.8    378.       -1.06        79.1        4.74        1.70    
BAHR   7.0    2.49        741.        60.9        5.87        2.90    
BRAZ    .9    162.       -1.66        67.0        6.00        2.30    
BRUS   1.0    .828e-01   -1.19        63.0        4.00        2.59    
CAS1   3.7    18.0        160.        54.9        5.74        1.42    
CHAT   7.0    103.       -1.07        80.6        5.16        2.32    
COCO   5.8    83.8       -.210e+04    44.7        5.00        2.60    
CRO1   7.0    .105e+04   -1.07        47.7        6.30        2.08    
DGAR   5.7    746.       -1.06        74.3        6.38        1.49    
FAIR*  7.0    .197       -1.06        34.9        4.31        2.13    
FLIN   6.0    117.       -1.05        51.7        4.00        2.74    
FORT   7.0    24.9       -1.15        69.7        6.00        1.57    
GALA   4.0    92.2       -1.03        74.6        5.00        1.65    
GOL2*  7.0    .243       -.291        43.4        4.34        1.85    
GUAM   6.9    133.       -1.06        63.7        8.16        2.02    
HKLO   2.0    .287e+06    494.        50.5        6.52        2.47    
IISC   3.9    94.7       -1.24        75.6        5.28        1.44    
IRKT   3.8    .197e+05    89.4        56.5        4.78        1.99    
KERG   7.0    .103e+04    790.          .         5.31        2.31    
KIRU   3.0    4.19       -.777        53.4        6.05        2.36    
KIT3   4.9    115.      -1.000        67.8        5.12        2.60    
KOKB*  6.5    118.       -.880        96.6        5.55        1.71    
KOSG*  7.0    1.67       -24.4        45.2        4.20        2.42    
KWJ1   6.0    103.       -1.28        68.2        6.00        1.58    
LHAS   1.9    95.4       -1.06        53.9        5.00        1.92    
LPGS    .9    156.       -1.38        63.0        5.00        2.30    
MAC1   5.8    81.3       -.990        35.6        4.00        2.13    
MADR*  7.0    2.41       -1.48          .         6.46        1.90    
MALI   7.0    80.7       -38.1          .         7.74        2.03    
MAS1   4.0    2.50       -.750        46.1        4.77        2.18    
MCM4   7.0    99.1       -1.06        40.9        4.74        1.43    
MDVO    .9    .297        918.        68.0        6.00        1.90    
MKEA   5.0    .163       -1.45        56.3        4.63        2.48    
NOTO   3.0    1.86       -2.59        39.6        6.36        2.54    
ONSA   1.0    .185       -1.08        40.0        4.00        2.01    
PERT   6.0    2.28       -2.39        51.7        4.69        2.33    
PIE1   1.0    .400       -.671        47.0        5.00        2.47    
POL2   1.0    77.0       -1.01        40.0        3.00        2.59    
REYK   7.0    74.0       -1.07        58.9        6.38        2.01    
SANT*  4.1    .104e+04   -1.24        47.2        4.87        1.25    
SELE    .9    132.       -1.41        36.0        3.00        3.11    
SFER   1.0    1.18        10.7        67.0        5.00        2.63    
SHAO   2.9    109.       -1.18        64.6        4.69        2.34    
STJO   6.0    2.23       -.388        40.4        4.78        2.87    
TAHI   6.6    303.       -1.04        82.4        5.61        2.09    
THU1   6.7    78.4       -1.09        46.5        6.14        2.16    
TID2*  7.0    10.6       -1.11        36.4        5.16        2.49    
TOUL   2.0    .542       -1.48        56.9        5.00        2.44    
TSKB   1.0    1.73       -1.76        43.0        5.00        2.78    
USUD   2.0    5.65        2.79        40.5        4.53        2.22    
WTZR*  6.0    .839       -1.04        61.7        4.69        2.39    
WUHN   3.0    8.46       -52.7        50.0        5.35        2.59    
YAR1*  3.0    87.4       -.903        38.0        4.00        2.11    
YELL*  5.0    2.67       -2.16        39.1        4.00        1.88    
PRN01  7.0    79.9        29.4        58.5        5.31        1.84    
PRN02  7.0    83.3       -414.        59.7        5.16        2.11    
PRN03  7.0    81.4        60.8        56.9        5.15        2.01    
PRN04  6.8    81.1        50.9        58.2        5.74        1.94    
PRN05  7.0    81.5        117.        54.8        5.00        2.32    
PRN06  7.0    81.7       -1.40        56.3        5.45        2.39    
PRN07  7.0    80.7        756.        54.6        5.15        2.00    
PRN09  3.8    83.1       -15.9        56.8        5.27        1.84    
PRN10  7.0    80.7        12.9        57.7        5.31        2.03    
PRN14  6.9    82.8        21.9        54.1        5.54        2.10    
PRN15  6.9    3.15        478.        62.2        5.31        1.96    
PRN16  7.0    81.2        30.8        58.3        5.31        2.30    
PRN17  7.0    79.8       -163.        61.5        5.45        2.33    
PRN18  7.0    79.4        4.71        54.4        5.15        2.30    
PRN19  6.7    80.3        266.        56.3        5.00        2.20    
PRN21  7.0    80.1        85.9        57.8        5.15        2.12    
PRN22  7.0    81.0        22.0        55.3        5.16        2.24    
PRN23  7.0    79.8        3.77        60.7        5.16        2.47    
PRN24  6.8    80.3        777.        57.2        5.46        2.03    
PRN25  6.6    80.3       -7.31        52.8        5.66        2.05    
PRN26  7.0    81.2       -28.8        55.0        5.45        2.44    
PRN27  6.7    80.3        3.16        55.4        5.16        2.21    
PRN29  7.0    81.2        254.        52.9        5.83        2.20    
PRN30  7.0    77.4       -5.30        54.4        5.00        2.49    
PRN31  7.0    81.4       -1.46        57.0        5.30        1.88    
_______________________
END ENGINEERING DATA SUMMARY 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
      97 10 12   97 10 13   97 10 14   97 10 15   97 10 16   97 10 17   97 10 18
prn   3d rss (cm)
  1     226        557        188        441        211        436        804   
  2     200        247        278        365        487        402        352   
  3     307        156        216        337        159        171        371   
  4     322        377        419        409        863        847        593   
  5     271        359        591        590        320        538        247   
  6     406        353        344        463        855        361        397   
  7     373        472        255        290        276        288        317   
  9     205        263        315                                         195   
 10     442        213        298        445        597        828        262   
 13   10601      12636      14857      17273      19725      22657      24976   
 14     384        789        432        676        609        816        458   
 15     165        328        186        493        179        293        259   
 16     491        228        220       1248       1657        357        812   
 17     218        266        206        228        264        258        161   
 18     852        557        465       1626       1270        462        409   
 19     324        271        412        697       1092        898        297   
 21     195        210        377        279        300        275        266   
 22     466        284        439       1215        381        320        569   
 23     399        346        695        557        408        403        227   
 24     347        481        508        519        409        488        416   
 25     288        227        349        266        231        330        324   
 26     254        207        166        378        277        193        355   
 27     656        313        509        375        474        542        394   
 29     132        577        443       1325        193        834        832   
 30     351        326        322        603        259        224        150   
 31     150        355        142        733        206        387        327   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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