Subject: [IGSREPORT-4013] Wk 0916 JPL Analysis Report
From: D C Jefferson
Date: Wed, 6 Aug 1997 16:55:35 PDT

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IGS Electronic Report    Wed Aug  6 16:55:35 PDT 1997      Message Number 4013
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Author: D C Jefferson
Subject: Wk 0916 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0916 (DAYS 208-214, DATES 1997 Jul 27 - Aug 02)
******************************************************************************

Submitted by the JPL IGS/FLINN Analysis Team:

J F Zumberge, D C Jefferson, M B Heflin, M M Watkins, F H Webb

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 (128.149.70.41),
directory pub/jpligsac/0916.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09167.sum         This text file.
jpl09167.erp         Earth rotation parameters for GPS week 916.
jpl09167.snx         Ground station coordinates for GPS week 916, SINEX format.
jpl0916[0-6].sp3     GPS ephemerides for GPS week 916, sp3 format.
jpl0916[0-6].tro     Ground station troposphere estimates for GPS week 916.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 11.0 cm

Data from PRN01 were mismodeled on day 211 and have been excluded from this
day's analysis.  Also, data from PRN07 did not meet our initial convergence
criteria on days 211 and 212.  We have excluded this satellite from the
analyses of both days.

A large clock discontinuity of about 0.21 ms was detected for PRN26 at
approximately 20:55 UT on day 212. 

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 ALGO) used as reference clock days 208-210, 212, and 213.
WARNING: PIE1 (not ALGO) used as reference clock day 211.
WARNING: Data from MAC1, METS, POL2, QUIN, SANT excluded day 208.
WARNING: Data from CSN1, QUIN, TAEJ excluded day 210.
WARNING: Data from PRN01, PRN07, QUIN, RCM6 excluded day 211.
WARNING: Data from PRN07, SANT excluded day 212.
WARNING: Data from CSN1, DAM2 excluded day 213.
WARNING: Data from CSN1, WLPS excluded day 214.

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 916 (1997 Jul 27 - Aug 02)
     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
50656.50  11157  51913   498191  1617    4    5     7      7 37  8 25  292  -94 
50657.50  11368  51812   496546  1673    2    3     6      6 37  9 25  274 -125 
50658.50  11638  51649   494896  1628    2    2     6      6 37 10 24  265 -132 
50659.50  11904  51535   493302  1559    3    3     6      6 37  9 23  310 -118 
50660.50  12182  51411   491737  1571    3    3     6      6 37  9 24  277 -174 
50661.50  12492  51296   490154  1596    2    2     6      6 37 10 25  297 -141 
50662.50  12808  51143   488584  1544    3    3     6      6 37 10 25  316 -124 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 916:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 916 (1997 Jul 27 - Aug 02)
      97  7 27   97  7 28   97  7 29   97  7 30   97  7 31   97  8  1   97  8  2
prn   3d rss (cm)
  1      12          9          5                    19          8          8   
  2       6         10         10          6          9         15         11   
  3      10         14          8         10         21         13         24   
  4      13          7          9         16         20         34         38   
  5       7          8          7          7         17          7          5   
  6      22         17         27         26         26         20         25   
  7       9          7          6                               22         10   
  9       7          6          7          9         11          7         10   
 10       8          9          6          8          7         16          6   
 14       8         12                    18         17         12         14   
 15      13         12          7          6         10          9          9   
 16      17         30          9          7          6          7         10   
 17      12         13         11          9         21         12         12   
 18       6          9          9          6         39         26         14   
 19      32         22         10          9          9         26         29   
 21      22         13          8         15         18         20          7   
 22      19         16         13         20         19         24         17   
 23      24         14          6          8         18         11         10   
 24       8          8          8         13         12         24         10   
 25      16         18          8          8         12          8         12   
 26       6          9          6         10         22         15         14   
 27      12          8          9          8          6         11         13   
 29       9          8          8          4         13          8         13   
 30      11         10         12         10         13         18         26   
 31       8         12          7         11         13          9         16   
_______________________
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 916 (1997 Jul 27 - Aug 02)
 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)
 |     |      |           |           |           |           |
 |___  |__    |_______    |_______    |___        |___        |__
ALBH   1.0    5.49       -17.6        47.0        5.00        3.23    
ALGO*  7.0    74.3        .150        49.1        4.87        2.73    
ANKR   3.8    154.       -.107        54.5        5.05        2.65    
AREQ   4.0    94.7       -.671e-01    38.6        5.44        2.15    
ASC1   6.9    80.6       -.542e-01    73.9        5.62        1.47    
AUCK   1.0    .439e+07   -103.        39.0        4.00        2.69    
BAHR   7.0    .541        129.        55.4        5.32        3.70    
BRAZ   2.0    230.       -.173        52.9        5.00        2.65    
CAS1   4.8    .666e+06    .131e+04    45.0        5.82        1.99    
CASA   1.0    19.6        196.        40.0        6.00        2.74    
CHAT   6.0    108.       -.320e-01    78.5        5.20        2.52    
COCO   1.9    109.       -.234e+04      .         6.03        3.22    
CRO1   6.0    767.       -.375e-01    48.3        5.86        1.95    
DGAR   6.0    95.0       -.368e-01    57.1        5.38        1.78    
FAIR*  6.8    83.1        .777e-01    35.5        5.61        2.38    
FLIN   5.0    84.2       -.719e-01    47.1        5.05        2.28    
FORT   5.0    .173       -.575        48.2        6.72        3.47    
GODE   2.0    .150        5.73        42.5        5.08        2.79    
GOL2*  6.0    28.5       -.431        42.9        7.00        2.14    
GUAM   5.9    122.       -.423e-01    62.2        9.77        2.09    
HARK   6.0    24.3        4.65        47.0        4.82        2.78    
HKLO   1.0    .289e+06    523.        49.0        6.00        2.12    
IISC   4.9    82.8       -.103        66.9        5.91        2.33    
IRKT   2.9    .246       -.231        68.3        5.26        2.37    
KERG   6.9    139.       -1.55          .         5.26        2.47    
KIRU   3.0    4.42        1.28        57.6        6.64        2.11    
KIT3   1.0    140.       -.179        59.0        5.00        2.00    
KOKB*  6.5    154.       -.335e-01    68.7        6.72        1.85    
KOSG*  5.8    1.73       -6.70        46.1        5.19        2.46    
KOUR   2.0    .299e+04    16.2          .         7.61        1.54    
KWJ1   7.0    103.       -.563e-01    54.7        7.66        1.81    
MAC1   2.3    87.5        .207e-01    30.0        3.74        2.15    
MAD2   1.0    .933e-01    .827        100.        6.00        2.41    
MADR*  7.0    .256        .640          .         7.03        2.39    
MALI   7.0    806.       -120.          .         7.76        2.34    
MAS1   6.0    68.5       -.249        41.4        4.59        2.27    
MCM4   7.0    97.5       -.449e-01    31.6        4.32        2.03    
MKEA   6.0    20.8       -.237e-02    41.2        6.52        2.75    
NOTO   1.0    .828e-01   -6.37        34.0        4.00        2.75    
PERT   7.0    2.26       -6.95        54.4        5.24        2.85    
PIE1   1.9    .132       -.151        48.7        5.55        2.80    
REYK   7.0    89.0       -.571e-01    58.1        6.72        2.12    
SANT*  4.3    .163e+04   -1.02        36.3        5.18        1.50    
SELE   5.7    122.       -.431e-01    36.7        5.03        3.22    
SHAO   3.0    107.       -.690e-01    53.8        6.88        2.36    
SOFI   1.0    99.9        .166e-01    40.0        5.00        3.13    
STJO   5.0    315.        .588        42.5        4.80        2.73    
TAHI   5.9    123.       -.567e-01    75.5        5.86        2.47    
THU1   7.0    76.0       -.554e-01    46.9        6.51        2.73    
TID2*  6.8    38.7       -.722e-01    38.0        5.16        2.49    
TOUL   4.0    .647        .461e-01    47.5        6.25        2.77    
USNO   2.0    .323       -.605e-02    60.5        7.05        2.59    
USUD   5.0    1.17       -.649e-01    41.6        6.58        2.80    
WTZR*  6.0    .526       -.961        62.6        5.72        2.69    
WUHN   2.0    9.20       -.538e+04    45.5        6.00        2.70    
XIAN   1.0    100.       -.225        41.0        5.00        2.96    
YELL*  7.0    90.7       -.205        44.2        5.15        1.73    
PRN01  6.0    81.4        25.1        55.0        6.03        2.36    
PRN02  7.0    79.1       -388.        54.4        5.86        2.28    
PRN03  6.8    83.9        37.7        53.0        6.28        2.28    
PRN04  7.0    80.4        39.3        52.8        6.11        2.31    
PRN05  7.0    80.6        106.        50.2        5.46        2.52    
PRN06  6.6    80.6       -.253        51.3        6.54        2.21    
PRN07  4.7    81.9        751.        54.0        6.03        2.10    
PRN09  7.0    81.8       -6.15        49.8        5.75        2.33    
PRN10  7.0    82.4        11.0        53.3        6.00        2.23    
PRN14  6.0    81.1        20.9        50.9        5.67        2.36    
PRN15  7.0    3.33        452.        53.8        5.73        2.22    
PRN16  7.0    81.1        21.6        53.6        6.16        2.39    
PRN17  7.0    78.8       -155.        53.7        6.00        2.19    
PRN18  7.0    80.6        2.90        50.0        5.94        2.45    
PRN19  7.0    82.2        135.        51.0        5.72        2.32    
PRN21  7.0    83.7        70.5        52.0        6.42        2.38    
PRN22  7.0    78.5        6.84        49.9        5.82        2.40    
PRN23  7.0    82.0        2.03        52.1        6.16        2.49    
PRN24  7.0    81.2        681.        54.1        6.02        2.22    
PRN25  7.0    79.8       -5.73        48.4        6.17        2.25    
PRN26  6.7    .132e+05   -152.        48.8        5.73        2.12    
PRN27  7.0    81.9        37.6        52.2        5.72        2.37    
PRN29  7.0    81.7        246.        51.2        5.67        2.75    
PRN30  7.0    79.6       -71.6        53.9        5.61        2.56    
PRN31  6.8    80.0       -.217        51.5        6.14        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
      97  7 27   97  7 28   97  7 29   97  7 30   97  7 31   97  8  1   97  8  2
prn   3d rss (cm)
  1     247        295        256                   509        291        217   
  2     383        449        277        358        619        251        245   
  3     737        546        710        966        598        834        828   
  4     336        436        350        822        454        449        303   
  5     284        302        344        280        249        198        184   
  6     527        419        558        584        778        574        622   
  7     572        639        447                              264        362   
  9     206        354        153        218        168        264        400   
 10     565        491        556        747        589        225        303   
 14     613        703                   483        576        430        664   
 15     445        427        346        336        179        162        191   
 16    2378       2746        861        839        604        832        385   
 17     433        331        339        224        349        572        239   
 18     342        486        470        301        351        616        271   
 19     423        380        366        400        471        221        196   
 21     388        380        285        349        312        344        221   
 22     334        398        342        278        532        338        275   
 23     627        407        478        552        806       1368        385   
 24     409        405        440        524        456        636        834   
 25     617        527        385        427        782        654        292   
 26     366        362        342        439        455        234        376   
 27     746        708        636        592        492        487        418   
 29     801        578        467        498        482        542        877   
 30     269        244        216        265        313        240        232   
 31     566        208       1247        291        399        254        773   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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