Subject: [IGSREPORT-5331] Wk 0974 JPL Analysis Report
From: D C Jefferson
Date: Fri, 18 Sep 1998 15:48:25 PDT

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IGS Electronic Report    Fri Sep 18 15:48:25 PDT 1998      Message Number 5331
******************************************************************************

Author: D C Jefferson
Subject: Wk 0974 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0974 (DAYS 249-255, DATES 1998 Sep 06 - Sep 12)
******************************************************************************

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/0974.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09747.sum         This text file.
jpl09747.erp         Earth rotation parameters for GPS week 974.
jpl09747.snx         Ground station coordinates for GPS week 974, SINEX format.
jpl0974[0-6].sp3     GPS ephemerides for GPS week 974, sp3 format.
jpl0974[0-6].tro     Ground station troposphere estimates for GPS week 974.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 11.0 cm

According to the file nanu1998.mes obtained from the IGS CBIS, PRN23 was
unusable on day 251.  Data from this satellite were mismodeled on this and
the following day (252) as well.  Also, PRN04 was mismodeled on day 253.
These satellites have been excluded from our processing on the appropriate
days.

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: NRC1 (not USNO) used as reference clock days 249 and 251-254.
WARNING: Data from COCO, DAV1, HOB2 excluded day 249.
WARNING: Data from DAV1, KSTU, NOUM excluded day 250.
WARNING: Data from PRN23, HOB2, QUIN excluded day 251.
WARNING: Data from PRN23, CMP9, HOB2 excluded day 252.
WARNING: Data from PRN04 FAIR, KELY excluded day 253.
WARNING: Data from COCO, PENC excluded day 254.
WARNING: Data from COCO, HOB2, NYAL excluded day 255.

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 974 (1998 Sep 06 - Sep 12)
version 2           
     MJD   XPole   Ypole  UT1R-UTC   LODR Xsg Ysg UTsg LOsg Nr Nf Nt   Xrt   Yrt
         10**-6" 10**-6"      .1us .1us/d 10**-6" .1us .1us/d          10**-6"/d
51062.50   83875  469690  -1466622   9244  46  54  184  184 37  0 27  2064  -990
51063.50   86328  468641  -1475873   9259  49  52  184  184 37  0 27  2095  -865
51064.50   88574  468142  -1485285   9565  53  57  199  199 37  0 26  1807  -694
51065.50   90733  467431  -1494611   9087  50  59  197  197 37  0 26  1702  -652
51066.50   92564  467050  -1503947   9584  47  59  192  192 37  0 26  1407  -850
51067.50   94432  466347  -1513774  10070  49  57  193  193 37  0 27  2003  -492
51068.50   95999  465871  -1523694   9771  49  59  190  190 37  0 27  1780  -821
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 974:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 974 (1998 Sep 06 - Sep 12)
      98  9  6   98  9  7   98  9  8   98  9  9   98  9 10   98  9 11   98  9 12
prn   3d rss (cm)
  1       6          5          8         10         13         12          8   
  2      17         10         13         10         11          9          7   
  3      17         20         20         11          9         12         11   
  4      11         10          8          9                     8          9   
  5       8          8         14         10          6         12          8   
  6      17         17          9         13         13         11         11   
  7      15          8         13         10          5          4          4   
  8      13          8         10         15          9         13          8   
  9      13         12         10         11         12         11         11   
 10       6         14          8          7         12         11          6   
 13      16         18          9          9         11         12         12   
 14      35         19         13         15          6         11         13   
 15       6          9         11         11          6         11         12   
 16      12         10         11         10          7         18          8   
 17      15         11         14         12         16         12         17   
 18       9         14         17         10          6         11          7   
 19      34         20         16         23         12         14         12   
 21      20          8         14         16          9         13         16   
 22      14         14          8         10          8         11          8   
 23      13         18                               18         13         20   
 24       6         13         12         12         22         25         15   
 25       7          5         14         10          7          8         13   
 26      14         15          6          7         12         14         13   
 27      10         14         10          9         12          9          7   
 29       6          7          9         13          8          7         14   
 30       8          8          4          8          8          8         11   
 31      10          9          9          7          8          7          8   
_______________________
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 974 (1998 Sep 06 - Sep 12)
 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    .690e-01    .927e-01    64.0        4.31        2.72    
AREQ*  4.0    107.        .103        63.8        4.00        2.20    
ASC1   6.3    547.        .108        75.1        5.16        1.39    
AUCK   4.0    86.7        .102        45.5        5.00        2.69    
BAHR   2.8    .697        774.        45.3        6.32        2.24    
BARB    .8    98.0        .154e-01    31.0        7.00        3.24    
BRMU*  1.0    101.        .996e-01    46.0        7.00        2.53    
BRUS   1.0    .522        6.41        63.0        5.00        3.00    
CAS1   6.7    12.2        .180e+04    36.6        5.87        1.19    
CASA   2.0    .478e+05    49.9        48.5        6.51        2.66    
CHAT   2.0    99.5        .105        84.0        5.00        2.39    
CRO1   6.0    .142e+04    .986e-01    63.2        5.52        1.81    
DAV1*  3.8    135.        .122          .         5.00        1.52    
DGAR   2.1    .466e+04   -.238        73.8        5.00        1.70    
EISL   7.0    120.        .969e-01    61.0        5.00        2.58    
FAIR*  5.8    60.4        .197        67.2        4.67        2.30    
FORT*  6.9    .326        .137        78.3        5.00        1.63    
GALA   5.0    .245e+04    .114        65.8        4.51        1.35    
GOL2*  7.0    .128        1.35        55.2        5.75        2.29    
GUAM*  6.9    136.        .560e-01    79.4        6.71        1.94    
HARK*  1.0    12.9        31.4          .         4.00        3.03    
HRAO   2.9    55.4        .178e-01    48.7        4.00        2.44    
IISC   6.0    102.        .726e-01    71.5        5.18        1.80    
IRKT*  2.0    .141        75.5        65.5        4.53        2.51    
KELY    .9    100.        .102          .         5.00        1.60    
KERG*  2.0    .234e+04    .133e+04      .         5.00        2.32    
KIT3*  2.0    132.        .912e-01    78.1        4.53        1.35    
KOKB*  6.7    .730       -.474e-01    91.9        5.00        2.88    
KWJ1*  6.7    390.        .882e-01    79.6        6.18        1.74    
LHAS*  3.8    118.        .841e-01    77.0        4.78        2.13    
MAC1*  4.8    93.0        .983e-01    39.6        4.62        2.24    
MAD2*  4.0    .926e-01    2.47        57.8        5.77        2.46    
MAG0   2.0    .290e+06    482.        34.0        5.00        2.26    
MALI*  5.9    14.8       -155.        95.3        6.84        1.78    
MAS1*  1.0    1.46        1.40        63.0        4.00        2.46    
MCM4   5.0    144.        .112        55.8        5.23        1.40    
MDO1*  1.0    15.5       -5.45        50.0        6.00        2.68    
MDVO   1.0    .397        226.        64.0        6.00        1.88    
MKEA   6.0    943.       -5.24        66.3        4.18        2.85    
NANO   1.0    4.35        42.1        46.0        5.00        2.82    
NOTO   3.9    .629        996.        85.6        7.25        2.84    
NRC1   5.5    .           .           91.5        4.22        2.79    
NSSP   2.8    111.        .112        54.4        4.00        2.11    
NTUS   4.5    350.        .443e-01    91.6        6.26        1.45    
NYA1   3.4    .118       -.890        44.9        6.00        1.72    
OHIG*  5.8    87.6        .999e-01    53.5        4.84        2.16    
ONSA*  4.8    63.1        .204        40.6        4.00        2.23    
PETR   3.9    .290e+06    495.        43.1        4.49        2.51    
POL2   1.9    79.3        .121        52.4        4.00        2.50    
REYK   1.9    96.8        .994e-01    58.5        6.00        2.13    
SANT*  6.0    570.       -.454        50.3        4.35        1.47    
SELE   1.0    107.        .906e-01    43.0        4.00        3.52    
STJO   1.0    233.       -1.56        51.0        6.00        2.93    
SUTH   2.9    102.        .119        58.7        4.00        2.45    
THU1*  3.0    79.0        .112        47.0        6.00        1.82    
TID2*  7.0    .124        1.37        44.8        5.16        2.54    
TSKB*  2.0    1.40       -2.78        55.0        5.00        3.27    
USNO   2.2    .           .           61.0        6.00        2.73    
USUD   7.0    .169        .704        47.8        4.60        2.80    
WTZR*  5.7    350.        .156        66.5        4.73        2.31    
XIAN   3.0    102.        .119        49.7        5.04        2.81    
YAKA   3.9    104.        .113        57.0        4.77        2.45    
YAR1*  7.0    82.9        .101        41.4        4.00        2.52    
YELL*  7.0    19.5        .243e-01    53.6        5.00        1.73    
PRN01  7.0    80.6        58.6        60.7        5.00        1.92    
PRN02  7.0    81.3       -530.        60.6        5.00        2.29    
PRN03  7.0    79.9        46.5        62.1        5.00        2.00    
PRN04  6.0    81.9        47.4        61.2        5.19        2.08    
PRN05  7.0    80.4        163.        61.1        5.00        2.42    
PRN06  7.0    79.7       -.577        64.4        5.00        2.04    
PRN07  7.0    81.2        790.        58.5        5.00        2.16    
PRN08  7.0    80.6        36.2        63.2        5.00        1.90    
PRN09  7.0    80.7       -9.59        63.6        5.00        2.22    
PRN10  7.0    79.1        26.2        62.9        5.00        1.88    
PRN13  7.0    80.2       -261.        59.0        5.00        2.16    
PRN14  7.0    83.5        3.64        63.1        5.15        2.26    
PRN15  7.0    2.77        597.        64.0        5.15        2.09    
PRN16  7.0    81.2        78.7        68.1        5.00        2.18    
PRN17  7.0    81.7       -188.        66.0        5.00        1.97    
PRN18  7.0    82.5        16.5        60.7        5.00        2.05    
PRN19  7.0    81.7       -38.9        63.7        5.15        1.96    
PRN21  6.9    79.7        57.1        64.1        5.00        1.80    
PRN22  7.0    82.3        1.01        61.6        5.00        2.12    
PRN23  5.0    79.0        3.95        63.0        5.00        2.15    
PRN24  7.0    80.6        744.        60.8        5.16        2.13    
PRN25  7.0    81.2       -5.99        63.0        5.17        1.91    
PRN26  7.0    81.8        363.        60.1        5.00        2.15    
PRN27  7.0    80.1        40.9        61.9        5.00        2.06    
PRN29  7.0    82.5        451.        57.5        5.00        2.12    
PRN30  7.0    81.2       -8.43        58.0        5.00        2.15    
PRN31  7.0    82.4        6.75        59.6        5.15        2.03    
_______________________
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  9  6   98  9  7   98  9  8   98  9  9   98  9 10   98  9 11   98  9 12
prn   3d rss (cm)
  1     436        402        353        351        319        595        362   
  2     227        232        225        209        265        270        359   
  3     213        227        221        345        629        268        323   
  4     427        505        452        502                   431        300   
  5     239        230        280        208        194        173        223   
  6     423        682        493        390        542        540        638   
  7     230        410        337        472        260        252        215   
  8     601        393        493        383        396        245        222   
  9     254        267        572        296        260        464        812   
 10     280        325        215        317        227        368        313   
 13     357        281        297        251        277        374        668   
 14     866        691        592       1216        832        586       1147   
 15     274        350        662        417        201        300        536   
 16     216        332        634        376        278        314        685   
 17     364        205        206        212        712        346        214   
 18     538        472        996        985        920        351        387   
 19     241        830       1291        389        342        302        204   
 21     387        697        272        278        389        334        284   
 22     492        410        354        706        564        654        297   
 23     949        442                              739        750        934   
 24     749        706        450        861       1078        375        386   
 25     353        281        261        219        734        425        652   
 26     424        462        621        321        338        293        386   
 27     370        333        393        387        403        331        422   
 29     154        162        181        175        244        269        175   
 30     378        172        149        241        321        220        243   
 31     269        345        293        256        191        205        380   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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