Subject: [IGSREPORT-6080] Wk 1008 JPL Analysis Report
From: D C Jefferson
Date: Tue, 18 May 1999 14:30:14 PDT

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IGS Electronic Report    Tue May 18 14:30:14 PDT 1999      Message Number 6080
******************************************************************************

Author: D C Jefferson
Subject: Wk 1008 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 1008 (DAYS 122-128, DATES 1999 May 02 - May 08)
******************************************************************************

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/1008.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl10087.sum         This text file.
jpl10087.erp         Earth rotation parameters for GPS week 1008.
jpl10087.snx         Ground station coordinates for GPS week 1008, SINEX format.
jpl1008[0-6].sp3     GPS ephemerides for GPS week 1008, sp3 format.
jpl1008[0-6].tro     Ground station troposphere estimates for GPS week 1008.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 11.0 cm

Data from PRN15 were mismodeled on day 125 and have been excluded accordingly.
Note that data from PRN27 were excluded from days 122 through 125 as a
residual effect of temporarily excluding this satellite due to recent Y2K
and week rollover testing; this satellite is not necessarily anomalous on
these days.

A large clock discontinuity (reset) of about 117 microseconds was detected
for PRN03 at approximately 21:50 on day 123.

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: FAIR (not USNO) used as reference clock day 124.
WARNING: Data from PRN18 excluded the entire GPS week 1008.
WARNING: Data from CSN1, SOL1 excluded day 122.
WARNING: Data from HERS, MAG0, SOL1 excluded day 123.
WARNING: Data from CSN1, MAG0, OAT2, TORP, WTZT excluded day 124.
WARNING: Data from PRN15, CSN1, MAG0, NTUS, WTZT excluded day 125.
WARNING: Data from CSN1, URUM excluded day 126.
WARNING: Data from KIT3, URUM excluded day 127.
WARNING: Data from KIT3, NYAL, TROM excluded day 128.

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 1008 (1999 May 02 - May 08)
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
51300.50  -10824  259139   5581091  14497  56  57  182  182 37  0 25 -1355   601
51301.50  -12310  259632   5566944  13797  61  63  186  186 37  0 25 -1045   899
51302.50  -14011  259972   5553537  13018  57  57  180  180 37  0 25  -951    57
51303.50  -15255  259931   5541254  11547  61  62  191  191 37  0 24  -574   565
51304.50  -15891  260650   5530055  10852  61  63  189  189 37  0 26  -713   886
51305.50  -16497  261473   5519212  10833  62  65  187  187 37  0 26  -784   679
51306.50  -17104  262328   5508478  10636  66  70  188  188 37  0 26  -713   433
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 1008:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE               GPS week 1008 (1999 May 02 - May 08)
      99  5  2   99  5  3   99  5  4   99  5  5   99  5  6   99  5  7   99  5  8
prn   3d rss (cm)
  1       9          9          6         10         11         10         13   
  2       7          7          5          8         12         12         10   
  3       5         18          9          8         11         12          6   
  4       8         11         10         10         11         12         10   
  5      15         18          8         11         12         20         13   
  6      19         14         19         23         10         12         14   
  7      15         14         14         16         11          8         10   
  8      10          6         12         12          5         11         13   
  9      21         16          8         11          6         12         17   
 10      11          9          9         15         18          7          5   
 13       9          8         10         10         14          7         18   
 14      16         18          8         13         11         35         22   
 15       8          9         12                     8         15         10   
 16       5         12         10          9          7         12         11   
 17       5         12         14          9          7          8         12   
 19      16         22         26         11         13          8         12   
 21       3          4          6         10          9          9         15   
 22       9         15         15         13         10         13         13   
 23      11         15         13         15         22         19          9   
 24      16         12          7         10         18         12         10   
 25       6          7          7         11          9          7          7   
 26      16         17          7         15         11         10         10   
 27                                                   5         17         22   
 29       7          7          6         10          8          9         13   
 30      11          7         10         12         13         21         26   
 31      13         16          9          7          8         11          6   
_______________________
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 1008 (1999 May 02 - May 08)
 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    .226       -.173e-01    86.1        4.32        2.52    
ANKR    .9    126.       -.365e-01    83.0        4.00        2.47    
AREQ*  2.0    177.       -.210e-01    65.5        4.00        2.50    
ASC1   2.2    .124e+04   -.271e-01    67.5        6.00        1.47    
AUCK   7.0    89.8       -.824e-02    48.0        4.45        2.67    
BAHR   7.0    .562        210.        38.8        4.31        2.09    
BARB   2.8    101.       -.835e-01    44.7        6.33        3.54    
BOGT   2.6    .444e+04    .784e-01    75.3        5.34        1.45    
CAS1   3.6    .165e+06    777.        38.1        5.00        1.09    
CRO1    .9    .364e+04    .464e-01    62.0        5.00        1.77    
DAV1*  5.7    133.        .234e-01      .         4.68        1.33    
DGAR    .6    309.       -.376e-01      .         4.00        1.38    
EISL   6.9    449.       -.413e-02    66.7        5.45        2.75    
FAIR*  6.9    6.17        .374e-01    57.8        4.31        2.26    
FORT*  5.8    .542       -.255        83.6        6.05        1.61    
GODE   1.0    .194       -.804e-01    54.0        4.00        2.91    
GOL2*  7.0    68.0       -.199        81.1        4.20        2.18    
GOUG   6.7    .289e+06    502.        57.0        5.02        2.48    
GUAM*  6.8    127.       -.585e-01    78.9        5.90        2.23    
HARK*  7.0    91.4       -.101e-01    63.9        4.31        2.52    
HOB2*  5.0    .170       -4.22        51.0        5.04        2.92    
HRAO   2.0    .103        .171        49.0        4.00        2.26    
IRKT*  7.0    .228        .666e-01    69.1        5.00        2.57    
KELY   3.9    .560e+05   -12.7        59.3        5.37        1.53    
KIT3*  4.8    109.        .805e-01    76.9        3.85        .721    
KOKB*  5.8    51.9        .218e-01    80.1        4.61        2.37    
KUNM   3.4    .129e+04    .758e-01    73.7        5.00        2.17    
KWJ1*  6.3    .104e+04   -.277e-01    94.9        6.01        1.66    
LPGS   1.0    289.        .350e-01    57.0        4.00        2.62    
MAC1*  6.8    90.3       -.594e-02    41.2        4.30        2.31    
MAD2*  6.8    .133e+04    4.02        88.4        6.16        2.24    
MAG0   4.0    .290e+06    484.        32.5        4.26        2.29    
MALI*  6.9    .613e+04   -30.2        94.1        6.87        1.57    
MCM4   4.6    126.       -.950e-03    50.8        4.42        1.04    
MDVO   1.0    .321        263.        76.0        7.00        2.39    
MKEA   3.9    337.       -.139        70.8        4.29        2.53    
NANO   1.0    8.53        547.        49.0        4.00        2.75    
NTUS   1.4    108.       -.472e-01    95.0        5.00        1.43    
NYA1   6.9    .122       -.221        42.2        5.00        1.77    
ONSA*  5.9    33.6       -.531e-01    48.0        3.84        2.27    
PETP    .7    152.        .401e-01    60.0        6.00        2.34    
PIE1*  1.0    .858e-01   -.461e-01    56.0        4.00        2.43    
PIMO   3.8    .205e+04    .151e-01    85.5        6.03        2.00    
SANT*  4.8    .141e+04   -.654        46.1        4.54        1.09    
SELE   2.0    131.       -.267e-01    60.0        4.00        2.77    
SEY1   1.0    111.       -.133e-01    96.0        6.00        1.37    
STJO   3.0    2.72       -.118        79.3        4.00        2.33    
TID2*  7.0    216.        1.14        45.2        4.63        2.37    
TIXI    .9    104.       -.516e-01    33.0        4.00        2.67    
TSKB*  7.0    1.72       -.742        60.4        4.44        2.89    
USNO   6.1    .           .           67.5        5.55        2.81    
USUD   6.0    .280       -2.60        52.3        4.53        2.96    
VESL   4.6    .289e+06    500.        38.1        4.21        2.42    
WTZR*  5.8    .126        .813        72.9        4.70        2.87    
YAR1*  6.9    92.4       -.756e-02    48.7        4.45        1.86    
YELL*  7.0    41.8        .378        66.8        4.45        1.77    
PRN01  7.0    81.2        83.0        58.3        4.74        2.43    
PRN02  6.1    81.6       -55.9        66.9        5.00        2.19    
PRN03  6.8    .100e+05    35.2        64.4        5.00        2.14    
PRN04  7.0    82.0        568.        65.7        5.00        1.98    
PRN05  6.4    81.2        198.        65.7        5.00        1.63    
PRN06  6.9    80.8        .339        61.5        5.00        1.86    
PRN07  7.0    82.5        364.        62.8        5.00        2.32    
PRN08  7.0    80.7        779.        62.0        5.00        1.79    
PRN09  7.0    81.5       -41.1        64.4        5.00        1.98    
PRN10  6.9    82.1        35.8        68.0        5.00        1.72    
PRN13  7.0    80.1       -151.        64.3        5.00        2.13    
PRN14  7.0    80.8        20.7        63.1        5.00        1.96    
PRN15  6.0    3.66        679.        64.0        4.54        2.06    
PRN16  7.0    82.7        114.        67.9        4.86        2.04    
PRN17  6.9    79.3       -210.        63.5        5.00        1.99    
PRN19  7.0    81.2       -4.35        63.5        4.73        2.08    
PRN21  7.0    79.6        16.6        64.7        4.87        2.16    
PRN22  6.8    78.4        388.        68.0        5.00        2.04    
PRN23  6.9    81.3        12.7        64.5        5.16        1.98    
PRN24  6.9    78.8        570.        67.9        5.00        2.03    
PRN25  7.0    82.5        .807        57.0        5.00        2.07    
PRN26  7.0    79.2        507.        63.1        5.15        2.08    
PRN27  2.9    81.1        19.5        64.7        4.00        2.23    
PRN29  7.0    80.8        429.        57.5        5.00        2.36    
PRN30  6.7    81.4       -17.0        62.9        5.00        1.66    
PRN31  7.0    80.1        17.9        60.8        5.00        2.27    
_______________________
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
      99  5  2   99  5  3   99  5  4   99  5  5   99  5  6   99  5  7   99  5  8
prn   3d rss (cm)
  1     371        204        233        180        256        259        189   
  2     219        255        230        338        272        319        408   
  3     254        297        262        270        422        386        293   
  4     390        400        395        564        308        778        226   
  5     424        515        497        626        554        469        616   
  6     816        592        404        395        716        546        513   
  7     368        271        281        454        235        345        358   
  8     344        373        352        158        276        286        215   
  9     247        287        491        544        308        344        533   
 10     320        482        388        579        616        476        423   
 13     198        377        358        362        331        388        288   
 14     447        982        955        416        372        458        526   
 15     283        431        418                   474        255        278   
 16     324        341        328        343        386        338        360   
 17     820        343        261        273        380        357        317   
 19     495        238        185        174        204        151        166   
 21     227        159        248        247        202        319        393   
 22     368        399        420        474        390        307        458   
 23     730        541        298        294        507        479        941   
 24     655        346        298        361        351        373        678   
 25     243        207        197        521        638        403        478   
 26     253        182        284        326        520        324        277   
 27                                                 389        406        413   
 29     309        294        272        324        377        299        584   
 30     195        254        250        248        267        287        282   
 31     245        220        129        273        417        309        336   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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