Subject: [IGSREPORT-4527] Wk 0939 JPL Analysis Report
From: D C Jefferson
Date: Wed, 21 Jan 1998 15:22:00 PST

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IGS Electronic Report    Wed Jan 21 15:22:00 PST 1998      Message Number 4527
******************************************************************************

Author: D C Jefferson
Subject: Wk 0939 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0939 (DAYS 4-10, DATES 1998 Jan 04 - Jan 10)
******************************************************************************

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 (137.78.60.30),
directory pub/jpligsac/0939.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09397.sum         This text file.
jpl09397.erp         Earth rotation parameters for GPS week 939.
jpl09397.snx         Ground station coordinates for GPS week 939, SINEX format.
jpl0939[0-6].sp3     GPS ephemerides for GPS week 939, sp3 format.
jpl0939[0-6].tro     Ground station troposphere estimates for GPS week 939.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 10.0 cm

We continue to deweight data from PRN08.  Data from this satellite exceeded
our intial orbit convergence criteria on days 009 and 010, and have been
excluded accordingly.  Also, we continue to exclude all data from PRN13
this week.

Data from PRN16 and PRN18 were mismodeled on days 006-007 and 005-006
respectively.  We have excluded data from these satellites on the
appropriate days accordingly.

Beginning this week we add a new candidate station.  As with other sites,
this station is given the opportunity to participate in the orbit and clock
solution as the global site distribution varies.  The following nominal
coordinates were assumed:
                               X (m)          Y (m)          Z (m)
SUWN (Suwon-shi, Korea)  -3062023.4734   4055449.1335   3841819.3277

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: TID2 (not NRC1) used as reference clock days 004-008.
WARNING: MKEA (not NRC1) used as reference clock days 009 and 010.
WARNING: Data from PRN16 excluded days 006 and 007.
WARNING: Data from PRN18 excluded days 005 and 006.
WARNING: Data from KOUR, SANT, SNI1 excluded day 004.
WARNING: Data from DAV1, IISC, JPLM, MALI, MEDI, USNA excluded day 005.
WARNING: Data from RCM6 excluded day 006.
WARNING: Data from MOIN, SNI1 excluded day 007.
WARNING: Data from SNI1 excluded day 009.
WARNING: Data from POL2 excluded day 010.

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 939 (1998 Jan 04 - Jan 10)
     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
50817.50   9388  17249   206265  1680    3    3     8      8 37 10 26 -234  -75 
50818.50   9163  17203   204564  1721    3    3     8      8 37 11 25 -240  -73 
50819.50   8917  17164   202843  1722    3    3     9      9 37 11 24 -282  -82 
50820.50   8660  17108   201131  1702    3    3     8      8 37 11 25 -250  -93 
50821.50   8403  17032   199441  1677    3    3     8      8 37 10 26 -303  -99 
50822.50   8086  16946   197792  1622    3    3     8      8 37 11 25 -312  -89 
50823.50   7777  16870   196170  1622    2    3     8      8 37 11 25 -322  -52 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 939:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 939 (1998 Jan 04 - Jan 10)
      98  1  4   98  1  5   98  1  6   98  1  7   98  1  8   98  1  9   98  1 10
prn   3d rss (cm)
  1      30          9         13          9         12         10         16   
  2      10         10         13         16          9          8          7   
  3      20          8          8          6         12          8          9   
  4       9         11          9         12          6          5          8   
  5      14         10         14         12          6          6          9   
  6      16          7         11          6          4          5          7   
  7       7          9          7          9          6          5          8   
  8      16         30         18         21         18                         
  9      16          7          5          7          6          7          8   
 10      11         10         10          9          9          7          8   
 14      11         16         11         13         12         11         11   
 15       5          5          7          7          7          6          9   
 16      10         10                               12          9         14   
 17      12         14         12          5         15         16         10   
 18      18                               10          7          8         10   
 19      12         13         19         16          9          8          7   
 21      13          9          8         10         10         14         14   
 22      12         14         11         12         19         16         17   
 23      37         10         15         14         13         15         11   
 24       8          8          8          8         11         10          6   
 25      32         23         21         12         11         10         10   
 26      20          7          5          7          8          9          8   
 27       8          8          6          8          9          9          8   
 29      19         17         15         10         12         12         10   
 30      16         10         14          9          5          9         12   
 31      13         12         11         13         11         13         14   
_______________________
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 939 (1998 Jan 04 - Jan 10)
 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)
 |     |      |           |           |           |           |
 |___  |__    |_______    |_______    |___        |___        |__
ALGO*  7.0    .528        5.24        51.6        5.06        3.05    
ANKR   1.0    127.       -.571e-01    56.0        5.00        3.28    
AREQ   2.9    96.1        .209e-01    49.4        4.00        2.58    
ASC1   7.0    .188e+04    .145e-01    77.2        5.00        1.57    
BAHR   7.0    .524        234.        42.6        5.46        3.83    
BRUS   1.0    .215        2.98        63.0        4.00        2.74    
CAS1   6.8    .203e+06   -498.        38.0        5.72        1.31    
CASA   1.0    9.54        69.1        32.0        4.00        2.92    
CHAT   7.0    110.       -.822e-03    73.0        5.46        2.78    
COCO   4.6    88.8       -.418e+04    41.3        5.42        2.98    
CRO1   7.0    140.       -.159e-02    44.9        6.00        2.04    
DGAR   7.0    104.        .471e-02    70.5        6.75        1.55    
EISL   7.0    224.        .480e-02    51.3        5.58        2.66    
FAIR*  7.0    .109       -.513e-02    39.2        4.45        2.09    
FLIN   1.0    85.4       -.593e-01    39.0        4.00        2.58    
FORT   6.9    .221       -.286e-01    64.7        5.86        1.52    
GALA   7.0    86.2       -.499e-02    62.6        6.05        1.69    
GOL2*  7.0    .110       -.526        65.6        4.15        2.30    
GUAM   2.8    114.       -.697e-03    59.1        6.68        2.21    
HARK   1.8    43.0       -7.25        55.5        5.00        2.62    
IISC   3.7    104.       -.689e-01    65.8        5.28        2.24    
IRKT   4.0    .111       -.449        48.8        4.76        2.44    
KERG   2.9    399.        .121e+04      .         5.00        2.41    
KIRU   4.8    112.        .941        50.9        6.00        2.07    
KIT3   1.0    112.        .185        53.0        5.00        3.09    
KOKB*  7.0    .887e-01    .218        60.8        5.88        2.49    
KOSG*  6.6    6.52       -9.67        39.8        4.20        2.40    
KOUR   3.0    3.98       -.218        71.7        6.34        1.44    
KWJ1   7.0    118.        .265e-02    58.3        5.87        1.76    
LPGS   1.0    451.       -.819e-01    67.0        5.00        3.18    
MAC1   6.8    90.6        .157e-02    47.9        4.16        2.28    
MAD2*  6.8    .179e+04   -.419        57.2        5.47        2.16    
MALI   5.0    58.1       -26.7        73.0        7.02        2.27    
MCM4   6.9    122.        .136e-02    56.4        5.00        1.25    
MKEA   2.0    .           .           43.5        4.53        2.56    
NICO   2.7    81.1       -.580e-01    37.1        4.00        2.47    
OHIG   5.5    .161e+07    163.        55.4        4.00        .987    
PERT   1.0    3.48       -11.8        50.0        5.00        2.72    
PIE1   1.0    .703e-01   -.297        52.0        4.00        2.37    
POL2   4.9    84.2       -.552e-01    56.7        3.82        2.56    
RCM6   1.0    96.9       -.917e-01    59.0        6.00        2.78    
REYK   6.0    76.7        .206e-01    60.1        6.17        1.85    
SANT*  5.4    .127e+04   -.154        45.9        4.69        1.43    
SELE    .9    98.9        .199        33.0        4.00        2.95    
STJO   2.9    .166e+07    .148e+04    35.4        4.00        1.79    
TAHI   2.8    159.       -.718e-01    89.6        5.35        2.59    
THU1   7.0    103.        .627e-02    48.8        5.45        1.96    
TID2*  7.0    .790e-01    .262        39.1        5.73        2.75    
USUD   6.9    .107e+04   -6.87        39.9        4.00        2.90    
WES2   4.0    .228        2.71        58.0        4.77        2.66    
WTZR*  6.0    .145        1.15        65.3        5.84        2.75    
WUHN   4.9    6.55       -75.1        43.8        4.81        2.55    
XIAN   1.9    104.        .779e-01    58.1        4.00        3.00    
YAR1*  6.9    95.0        .907e-02    40.6        5.02        2.31    
YELL*  7.0    13.7       -3.38        42.9        4.44        1.74    
PRN01  7.0    79.6        36.5        53.0        5.31        2.20    
PRN02  7.0    82.1       -442.        58.2        5.31        2.27    
PRN03  6.8    78.3        87.4        54.1        5.46        2.12    
PRN04  7.0    79.6        5.07        53.3        5.00        1.91    
PRN05  7.0    81.1        130.        49.0        4.86        2.40    
PRN06  7.0    78.8       -.162        54.0        5.15        2.06    
PRN07  6.9    81.1        765.        57.1        5.16        2.14    
PRN09  7.0    79.6       -25.1        52.2        4.87        2.16    
PRN10  6.8    81.5        17.1        56.5        5.00        1.97    
PRN14  6.6    80.0        25.4        54.3        5.16        2.08    
PRN15  7.0    2.94        509.        57.0        5.00        2.26    
PRN16  4.8    82.6        43.8        58.3        5.00        2.12    
PRN17  7.0    82.2       -170.        56.9        5.00        2.09    
PRN18  5.0    79.1        9.59        56.0        5.00        2.02    
PRN19  7.0    79.6        354.        57.2        5.00        2.10    
PRN21  6.6    80.4        15.7        54.9        5.60        2.08    
PRN22  7.0    81.8        40.0        54.3        5.16        2.14    
PRN23  6.6    80.0        8.22        56.2        6.74        2.05    
PRN24  7.0    82.0        758.        52.3        5.00        2.22    
PRN25  6.9    82.2       -6.72        51.3        5.32        2.05    
PRN26  7.0    81.0       -68.7        53.3        5.00        2.05    
PRN27  7.0    80.8        13.9        56.9        5.00        2.27    
PRN29  7.0    80.4       -40.0        54.2        5.00        2.33    
PRN30  7.0    81.5       -19.2        51.1        5.00        2.22    
PRN31  6.9    81.2        .340        56.6        5.63        2.31    
_______________________
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
      98  1  4   98  1  5   98  1  6   98  1  7   98  1  8   98  1  9   98  1 10
prn   3d rss (cm)
  1     472        222        309        227        351        556        480   
  2     193        262        551        295        288        204        159   
  3     210        201        169        192        244        316        359   
  4     384        310        535        362        296        453        598   
  5     413        303        338        519        654        453        346   
  6     494        535        585        623        605        643        654   
  7     188        202        238        227        175        224        250   
  8     994        479        791        517        280                         
  9     250        222        148        158        160        153        387   
 10     651        522        425        316        412        252        390   
 14     792        568       1028        421        828       2128        542   
 15     319        200        207        213        302        281        322   
 16     240        260                             1439        807        439   
 17     374        391        496        613        734        626        695   
 18     630                              336        441        927        343   
 19     409        580        294        291        306        256        343   
 21     452        339        321        457        333        217        149   
 22     846        377        263        809        708        688        667   
 23     730        934        456        516        477        568        428   
 24     488        176        271        254        468        532        427   
 25     500        164        346        291        288        313        482   
 26     462        434        396        540        249        352        288   
 27     463        288        314        282        652        598        327   
 29     221        220        288        390        291        187        159   
 30     134        197        155        536        195        163        328   
 31     194        186        216        264        261        233        338   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   algo ankr areq asc1 bahr brus cas1 casa chat coco cro1 dgar eisl fair flin fort gala gol2 guam hark iisc irkt kerg kiru kit3 kokb kosg kour kwj1 lpgs mac1 mad2 mali mcm4 mkea nico ohig pert pie1 pol2 rcm6 reyk sant sele stjo tahi thu1 tid2 usud wes2 wtzr wuhn xian yar1 yell

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