Subject: [IGSREPORT-4648] Wk 0945 JPL Analysis Report
From: D C Jefferson
Date: Thu, 26 Feb 1998 16:48:10 PST

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IGS Electronic Report    Thu Feb 26 16:48:10 PST 1998      Message Number 4648
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Author: D C Jefferson
Subject: Wk 0945 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0945 (DAYS 46-52, DATES 1998 Feb 15 - Feb 21)
******************************************************************************

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/0945.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09457.sum         This text file.
jpl09457.erp         Earth rotation parameters for GPS week 945.
jpl09457.snx         Ground station coordinates for GPS week 945, SINEX format.
jpl0945[0-6].sp3     GPS ephemerides for GPS week 945, sp3 format.
jpl0945[0-6].tro     Ground station troposphere estimates for GPS week 945.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 13.0 cm

We continue to exclude data from PRN13 and deweight all data from PRN08
this week.  Also, data from PRN29 were mismodeled on day 059, and have
been excluded on this day only.

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 NRC1) used as reference clock days 049 and 051.
WARNING: TID2 (not NRC1) used as reference clock day 050.
WARNING: Data from PRN29 excluded day 050.
WARNING: Data from KELY excluded day 047.
WARNING: Data from KELY excluded day 048.
WARNING: Data from KELY excluded day 049.
WARNING: Data from CRO1 excluded day 052.

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 945 (1998 Feb 15 - Feb 21)
     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
50859.50  -2766  17803   124207  2012    3    3    10     10 37 11 26 -178   30 
50860.50  -2949  17928   122189  2025    4    3    10     10 37 11 26 -165  102 
50861.50  -3103  18067   120151  2051    4    4    11     11 37 11 26 -188   88 
50862.50  -3304  18231   118110  2030    3    3    11     11 37 11 26 -291  109 
50863.50  -3617  18362   116099  1992    3    3    11     11 37 10 25 -305   61 
50864.50  -3932  18463   114082  2043    3    3    11     11 37 10 26 -309   74 
50865.50  -4279  18601   112028  2065    3    3    10     10 37 10 26 -389   63 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 945:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 945 (1998 Feb 15 - Feb 21)
      98  2 15   98  2 16   98  2 17   98  2 18   98  2 19   98  2 20   98  2 21
prn   3d rss (cm)
  1       9         10         14         18         13          7         11   
  2      16         12         25         19         15         14         13   
  3      16         12          7          4          6          8         12   
  4       9          8         19         14          8          7          8   
  5       7          7         11         11         16         16          8   
  6      16         19         22         21         18         14         15   
  7      12         10          9         17         16         13         10   
  8      16         39         44         44         30         55         35   
  9      13          8         11         15         19         20         11   
 10      14         17         26         30         18         13         13   
 14      15         10         10          9         14         15         14   
 15      10         12         13         10         11          8         13   
 16      10          7         11          9         16         13         11   
 17      12         12         19         14         11          6         11   
 18      18         13         32         26         23         17         55   
 19      13         15         33         20         27         18         19   
 21       9          6         12         13          7         14         18   
 22      16          9         11          9          8          5          5   
 23      12         17         19         16          8         20         19   
 24      13          8         21         31         22         16         15   
 25      12         10         10         11          8         10         14   
 26      18         20          9         17         11          9          9   
 27      19         11         19         23         18         17         12   
 29      10         20         20         36                     7         13   
 30       6          8         13         11         10          7          7   
 31      18         19         21         18          8          9         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 945 (1998 Feb 15 - Feb 21)
 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*  5.1    .840e-01    9.22        51.3        4.15        2.58    
AREQ   5.0    98.0       -.213        57.6        4.62        2.17    
ASC1   6.5    .563e+04   -.376        76.5        5.21        1.36    
BAHR   6.9    1.68        233.        46.4        5.59        3.24    
BRMU   1.1    93.2       -.165        39.0        5.84        2.60    
BRUS   1.0    .207        10.2        60.0        4.00        2.68    
CAS1   4.6    .641e+07   -.152e+05    37.6        5.77        1.28    
CASA   1.0    17.1       -5.19        67.0        7.00        1.89    
CHAT   7.0    105.       -.336        78.5        5.30        2.62    
COCO   3.7    114.       -.999e+04    45.2        5.48        2.92    
CRO1   6.0    148.       -.378        49.7        5.35        1.97    
DAV1    .9    145.        .139          .         5.00        .938    
DGAR   6.8    502.       -.355        74.1        6.03        1.59    
EISL   7.0    130.       -.333        57.0        5.44        2.74    
FAIR*  7.0    63.5       -.627        39.1        4.44        2.04    
FLIN   4.0    85.8       -.286        47.4        4.24        1.94    
FORT   6.9    .241       -.452        77.6        7.04        1.45    
GOL2*  6.9    355.       -.346        68.5        4.31        1.96    
GUAM   7.0    112.       -.338        65.9        5.87        2.06    
HRAO   7.0    74.9       -.337        49.6        5.00        2.71    
IISC    .4    187.       -1.34          .         6.00        1.28    
IRKT   3.9    .216        .209        51.0        4.76        2.57    
KERG   4.0    .317e+04    .132e+04      .         5.27        2.46    
KIRU   5.0    6.28        3.77        51.4        6.20        1.90    
KIT3   1.7    120.        .152        55.6        5.00        2.93    
KOKB*  7.0    .979e-01   -18.1        65.5        5.05        2.55    
KOSG*  3.9    5.44       -23.3        43.5        4.54        2.53    
KOUR   3.0    3.68        1.75        81.1        6.35        1.50    
KWJ1   6.9    797.       -.331        69.8        6.00        1.89    
LHAS   5.9    98.5       -.363        49.7        5.05        2.81    
MAC1   4.8    87.6       -.225        45.6        4.00        2.68    
MAD2*  6.9    476.       -.147        61.5        5.49        2.15    
MALI   5.8    35.2       -310.        81.2        7.34        1.96    
MAS1   1.9    11.0       -.245        44.2        4.00        2.11    
MDVO    .9    .613        234.        63.0        7.00        1.56    
MKEA   5.9    .438e-01    1.54        56.5        4.85        2.49    
NICO   2.0    76.9       -.670        46.7        4.54        2.27    
NRC1   4.1    .           .           70.3        3.77        2.79    
OHIG   2.3    .338e+05    1.87        54.0        4.31        1.07    
PERT   5.0    2.89       -1.17        49.6        4.62        2.47    
POL2   2.8    129.       -.421        47.6        3.70        2.37    
REYK   7.0    80.3       -.331        58.1        6.16        1.75    
SANT*  5.6    .128e+04   -.341        48.6        4.13        1.18    
STJO   2.2    2.26        .699e-01    43.3        3.92        2.43    
TAHI   3.4    327.       -.269        80.0        6.48        2.23    
TID2*  7.0    .869e-01   -.508        38.2        5.31        2.56    
USUD   7.0    .603       -1.79        45.1        4.59        2.94    
WES2    .2    .938e-01    .535e-01    65.0        4.00        1.45    
WTZR*  5.2    .886e-01    1.20        62.6        4.87        2.66    
WUHN   5.8    5.90       -535.        46.8        5.00        2.40    
YAR1*  6.8    91.2       -.350        39.2        4.00        2.13    
YELL*  5.2    .145e+04   -6.35        40.4        4.37        1.32    
ZWEN   1.9    85.8       -.607        57.6        5.00        2.59    
PRN01  6.6    80.3        39.6        53.7        5.90        2.02    
PRN02  6.9    81.0       -457.        61.0        5.00        2.18    
PRN03  6.9    79.6        100.        59.1        5.16        2.25    
PRN04  7.0    80.6        12.1        58.5        5.00        1.97    
PRN05  7.0    82.8        136.        54.9        5.00        2.41    
PRN06  6.8    82.4       -.742        56.4        5.18        2.01    
PRN07  6.9    83.4        769.        59.1        5.15        2.06    
PRN09  7.0    81.0       -30.8        57.8        5.00        2.34    
PRN10  7.0    81.5        18.4        57.8        5.15        2.02    
PRN14  7.0    81.2        26.6        51.7        5.15        2.34    
PRN15  7.0    3.23        524.        55.4        5.00        2.50    
PRN16  7.0    80.0        49.5        57.1        5.00        2.21    
PRN17  7.0    81.7       -174.        58.8        5.00        2.03    
PRN18  6.6    84.2        10.8        56.5        5.29        2.11    
PRN19  7.0    82.1        377.        61.7        5.00        2.11    
PRN21  7.0    80.5        23.5        55.3        5.00        2.20    
PRN22  7.0    81.7        47.0        57.0        5.00        2.25    
PRN23  7.0    78.5        9.68        53.8        5.29        2.22    
PRN24  7.0    82.8        785.        60.7        5.00        2.24    
PRN25  7.0    81.1       -7.16        53.4        5.15        2.05    
PRN26  6.8    82.3       -94.4        57.2        5.00        2.13    
PRN27  7.0    80.1        17.9        64.0        5.00        2.07    
PRN29  5.7    82.5        196.        56.2        5.89        2.35    
PRN30  7.0    81.4       -26.2        53.4        5.00        2.47    
PRN31  6.8    81.2        .974        58.7        5.44        2.11    
_______________________
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  2 15   98  2 16   98  2 17   98  2 18   98  2 19   98  2 20   98  2 21
prn   3d rss (cm)
  1     488        794        433        668        494        461        834   
  2     330        259        305        232        140        198        157   
  3     276        280        397        327        304        394        348   
  4     187        277        316        299        287        534        717   
  5     275        213        389        333        303        301        288   
  6     743        713        782        801        685        744        740   
  7     440        404        315        324        315        296        473   
  8     518        260        317        455        243        382        788   
  9     200        152        199        332        271        301        233   
 10     571        551        475        344        270        262        560   
 14     393        954        420        616        435        387        499   
 15     161        268        288        335        283        286        266   
 16     473        510        431        321        353        344        366   
 17     439        505        465        559        563        307        368   
 18     501        324        774        683       1350       1518        560   
 19     458        171        380        334        384        694        685   
 21     568        308        378        396        394        307        242   
 22     508        419        506        378        428        404        383   
 23     694       1257        384        505       1128       1393       1315   
 24     154        320        355        261        207        916        857   
 25     200        375        246        354        474        302        245   
 26     318        349        421        228        304        397        743   
 27     281        338        230        407        220        410        657   
 29     764        446        566        415                   592        747   
 30     388        246        306        202        236        454        616   
 31     271        488        290        369        336        482        467   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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