Subject: [IGSREPORT-5628] Wk 0989 JPL Analysis Report
From: D C Jefferson
Date: Tue, 5 Jan 1999 9:10:00 PST

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IGS Electronic Report    Tue Jan  5  9:10:00 PST 1999      Message Number 5628
******************************************************************************

Author: D C Jefferson
Subject: Wk 0989 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0989 (DAYS 354-360, DATES 1998 Dec 20 - Dec 26)
******************************************************************************

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/0989.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09897.sum         This text file.
jpl09897.erp         Earth rotation parameters for GPS week 989.
jpl09897.snx         Ground station coordinates for GPS week 989, SINEX format.
jpl0989[0-6].sp3     GPS ephemerides for GPS week 989, sp3 format.
jpl0989[0-6].tro     Ground station troposphere estimates for GPS week 989.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 11.0 cm

PRODUCTS UPDATE
---------------
Beginning this week, GPS satellite clock solutions in our sp3 files reflect
the use of the antenna phase center offset points agreed upon by the IGS.
These are designated as follows:

   Block II/IIA: 0.279 0.000 1.023  X, Y, Z in meters
   Block IIR   : 0.000 0.000 0.000  X, Y, Z in meters

Please note that only the Z (radial) component correction has been applied;
this is reflected via the appropriate comment on line 22 of each sp3 file.

GENERAL
-------
Data from PRN07 were mismodeled days 354 through 359 and have been excluded
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: PIE1 (not USNO) used as reference clock days 354 and 355.
WARNING: ALGO (not USNO) used as reference clock day 356.
WARNING: Data from PRN37 excluded days 354-359.
WARNING: Data from COCO, EPRT, HARK, HOLB, NICO excluded day 354.
WARNING: Data from COCO, HARK, NICO excluded day 355.
WARNING: Data from COCO, HARK, KSTU, MADR, NICO excluded day 356.
WARNING: Data from COCO, FLIN, HARK, HNPT, KSTU, NICO, NYAL excluded day 357.
WARNING: Data from BOR1, FLIN, HARK, NICO excluded day 358.
WARNING: Data from BOR1, FLIN, HARK, NICO excluded day 359.
WARNING: Data from HARK, NYAL excluded day 360.

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 989 (1998 Dec 20 - Dec 26)
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
51167.50  142162  312268  -2845723   9587  49  57  180  180 37  0 26   947 -1682
51168.50  142781  311052  -2855162   9291  50  52  174  174 37  0 26   618 -2202
51169.50  143102  309183  -2864277   8938  47  54  175  175 37  0 26   340 -2667
51170.50  143289  307403  -2873098   8704  52  54  180  180 37  0 26   -72 -1926
51171.50  143292  306068  -2882000   9101  47  55  177  177 37  0 26   -10 -2088
51172.50  143268  304521  -2891552  10002  50  56  175  175 37  0 26  -409 -1572
51173.50  142770  303061  -2901171   9237  53  62  177  177 37  0 27  -694 -1465
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 989:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 989 (1998 Dec 20 - Dec 26)
      98 12 20   98 12 21   98 12 22   98 12 23   98 12 24   98 12 25   98 12 26
prn   3d rss (cm)
  1      15         14         13         12          7         10          7   
  2      22         10         15         20         15         13         13   
  3       9          8          8         14          7          6          9   
  4       7          5          9         10         12          8         12   
  5      25         10         10          8         11         13         18   
  6      14         11         11         12          9         14          9   
  7                                                                        16   
  8       9          8         12         11          9         12         17   
  9       6         10          8          9          9         11         12   
 10      11         11         15         19          8         14         19   
 13      20         16         12         16         16         15         16   
 14       8         21          6         42         43         19         16   
 15      12         16          8          9          7         16         12   
 16       8         12          6         20         12         10         11   
 17       8         11          9         12          7         10          7   
 18      22         10         16          8         16         13         13   
 19      24          9         12         15         18         22         23   
 21       9         14         13         16         20         10          7   
 22      19         11          6         20         16         13          8   
 23       7          7         12         20         11         14         12   
 24       6         10         12          8         13         15         11   
 25       8          6          9         12         13          8          5   
 26      10          8          8         13         11          6         12   
 27      15          8         10         15         11         10         13   
 29      13         12         12         12          8         10          7   
 30      12         11         10         12          9          8          8   
 31      11         11          9         11          6         12         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 989 (1998 Dec 20 - Dec 26)
 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    .156       -.636        53.9        3.91        2.65    
AREQ*  1.0    158.        .135        62.0        4.00        2.60    
ASC1   4.6    .516e+04   -.626        73.0        4.00        1.42    
BAHR   7.0    1.24        73.5        39.4        4.31        2.98    
BOGT   1.7    297.       -.404        67.7        5.89        1.52    
CAS1   6.7    39.5        .172e+04    40.9        5.71        1.08    
CASA   1.0    44.4        57.5        44.0        6.00        2.73    
CRO1   4.0    165.       -.490        52.8        6.27        2.00    
DAV1*  6.9    150.       -.534          .         5.30        1.25    
DGAR   3.5    391.       -.760        73.2        6.00        1.60    
EISL   7.0    140.       -.564        67.6        5.00        2.76    
FAIR*  6.6    9.67       -.447        65.8        4.58        2.06    
FORT*  3.9    .379       -.500        82.9        6.35        1.50    
GALA   4.0    436.       -.640        62.9        4.00        1.63    
GOL2*  5.6    24.4       -1.84        85.4        3.67        2.34    
GOUG   5.9    .289e+06    500.        61.9        5.68        2.51    
GUAM*  3.0    128.       -.349        84.8        5.00        2.37    
HOB2*  1.0    .714e-01   -2.42        52.0        6.00        2.80    
HRAO   6.0    298.        .402        57.6        5.35        2.38    
IISC   3.9    97.2       -.210        73.8        5.00        2.31    
IRKT*  6.9    63.9        .413e-01    51.3        4.73        2.48    
KELY   2.0    89.7       -.461          .         6.00        1.29    
KERG*  5.8    .232e+04    325.          .         6.34        2.38    
KOKB*  6.4    278.       -.593        73.9        5.17        2.57    
KOUR*   .8    277.       -.229e-01    71.0        5.00        1.43    
KUNM   6.4    264.       -.576        67.5        4.16        2.47    
KWJ1*  7.0    .180e+05   -1.42        71.2        6.23        1.99    
LPGS   4.0    192.       -1.04        67.6        4.00        1.21    
MAC1*  6.9    96.0       -.551        46.0        4.59        2.14    
MAD2*  6.6    .226e+04   -.196        79.0        5.76        2.17    
MAG0   5.0    .289e+06    477.        30.8        4.47        2.57    
MALI*  6.9    801.        4.86        92.6        6.61        2.06    
MATE*  5.0    .211       -4.92        44.6        4.43        2.99    
MDVO   2.0    .157        226.        73.5        5.51        2.16    
MEDI   1.0    .188       -1.79        33.0        3.00        2.68    
NANO   1.0    5.74        343.        52.0        4.00        2.79    
NTUS   3.9    110.       -.861        98.4        6.01        1.45    
NYA1   2.9    .113       -.280        40.0        5.67        1.43    
ONSA*  7.0    .106       -3.07        42.5        3.87        2.23    
PETP    .9    125.        .141        65.0        5.00        2.56    
PIE1*  3.9    47.3       -.790        57.4        4.00        2.36    
POL2   3.0    78.3       -.301        58.0        3.00        2.33    
SANT*  4.8    446.       -1.59        49.0        3.64        2.66    
SUTH   1.0    97.5        .139        46.0        4.00        2.68    
THTI   4.8    .289e+06    502.        68.9        7.08        2.49    
TID2*  6.9    .127       -.526        50.1        5.44        2.44    
TSKB*  7.0    1.66       -.319        52.2        4.00        2.89    
USNO   4.1    .           .           79.1        5.00        2.56    
USUD   5.0    .106       -.362        45.2        4.00        2.85    
VESL   6.8    .289e+06    503.        63.0        5.00        2.12    
WES2   1.0    .171        2.06        49.0        4.00        2.75    
WTZR*  7.0    .115       -4.49        64.4        4.31        2.94    
YAR1*  7.0    97.0       -.555        47.8        4.16        2.44    
YELL*  7.0    .230       -.522        54.7        4.58        1.48    
PRN01  7.0    81.3        68.6        60.3        5.00        2.18    
PRN02  7.0    80.0       -4.66        66.8        4.78        2.38    
PRN03  6.9    81.5        77.1        63.1        5.00        1.99    
PRN04  7.0    80.7        355.        59.3        5.00        2.02    
PRN05  7.0    78.7        177.        60.5        5.00        2.28    
PRN06  6.9    82.2       -.957        59.2        5.16        2.04    
PRN07  1.0    84.2        802.        65.0        5.00        2.19    
PRN08  7.0    80.9        604.        57.1        4.60        2.25    
PRN09  7.0    81.6       -24.2        59.3        4.46        2.30    
PRN10  6.8    79.6        29.6        67.6        5.16        1.89    
PRN13  7.0    79.1       -409.        61.5        5.16        2.34    
PRN14  6.6    80.4        9.66        60.7        5.16        2.11    
PRN15  6.9    3.66        633.        62.3        5.00        2.08    
PRN16  6.7    81.1        93.3        62.3        5.00        2.02    
PRN17  7.0    81.2       -199.        58.3        5.00        2.07    
PRN18  7.0    80.9        19.4        68.9        5.16        2.14    
PRN19  7.0    81.0       -89.5        60.8        4.60        2.17    
PRN21  6.6    82.1        .226        61.7        5.31        1.87    
PRN22  7.0    81.5        528.        62.6        5.03        1.83    
PRN23  6.6    82.5        7.16        63.9        5.95        1.97    
PRN24  7.0    82.0        508.        59.9        5.00        1.99    
PRN25  7.0    81.5       -.495        58.3        5.15        2.13    
PRN26  7.0    81.9        726.        61.2        4.87        2.24    
PRN27  7.0    82.6        5.37        61.4        4.61        2.42    
PRN29  7.0    80.0        20.4        62.3        4.73        2.17    
PRN30  7.0    83.6       -2.37        58.0        4.73        2.26    
PRN31  6.9    80.8        10.8        61.2        5.00        2.07    
_______________________
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 12 20   98 12 21   98 12 22   98 12 23   98 12 24   98 12 25   98 12 26
prn   3d rss (cm)
  1     392        553        825        744        531        519        608   
  2     547        551        551        424        478        475        626   
  3     394        303        417        335        313        277        309   
  4     361        360        285        447        606        755        574   
  5     515        512        596        654        711        603        470   
  6     815        784        857        844        831        742        757   
  7                                                                       465   
  8     526        559        584        244        403        416        484   
  9     530        604        325        416        513        645        520   
 10     573        557        488        481        417        386        492   
 13     215        236        592        738        333        619        601   
 14    1106       1554        888       1533        767        812       1254   
 15     313        236        357        612        428        444        250   
 16     527        618        587        616        495        706        422   
 17     320        341        279        461        538        228        340   
 18     334        297        354        360        363        536        326   
 19     287        241        394        432        432        303        245   
 21     477        289        589        388        588        550        397   
 22     463        542        516        750        424        386        374   
 23    1760        423        776       1157        653       1270       1493   
 24     347        329        317        406        317        295        263   
 25     582        461        836        389        579       1042        459   
 26     398        530        833        633        434        474        538   
 27     462        399        480        410        553        470        499   
 29     320        260        327        448        520        392        459   
 30     329        459        484        448        345        384        405   
 31     353        321        485        602        463        420        653   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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