Subject: [IGSREPORT-4067] Wk 0918 JPL Analysis Report
From: D C Jefferson
Date: Mon, 25 Aug 1997 13:35:27 PDT

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IGS Electronic Report    Mon Aug 25 13:35:27 PDT 1997      Message Number 4067
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Author: D C Jefferson
Subject: Wk 0918 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0918 (DAYS 222-228, DATES 1997 Aug 10 - Aug 16)
******************************************************************************

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/0918.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09187.sum         This text file.
jpl09187.erp         Earth rotation parameters for GPS week 918.
jpl09187.snx         Ground station coordinates for GPS week 918, SINEX format.
jpl0918[0-6].sp3     GPS ephemerides for GPS week 918, sp3 format.
jpl0918[0-6].tro     Ground station troposphere estimates for GPS week 918.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 11.0 cm

Data from PRN14 did not meet our initial orbit convergence criteria on days
223 and 224, and have been excluded from the analyses of both days 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: FAIR (not ALGO) used as reference clock days 227 and 228.
WARNING: Data from COCO, LAMA, QUIN, ZWEN excluded day 222.
WARNING: Data from COCO, SANT, TAIW, ZWEN excluded day 223.
WARNING: Data from DGAR, QUIN, TAIW, ZWEN excluded day 224.
WARNING: Data from TAIW, VCIO excluded day 225.
WARNING: Data from POTM, VCIO excluded day 226.
WARNING: Data from AUCK, AZU1, QUIN, SNI1, TID2 excluded day 227.
WARNING: Data from MONP, PIE1 excluded day 228.

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 918 (1997 Aug 10 - Aug 16)
     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
50670.50  14811  49936   476316  1500    3    3     6      6 37  9 25  233 -219 
50671.50  15023  49734   474819  1493    3    3     6      6 37  9 24  216 -249 
50672.50  15249  49510   473346  1454    3    3     6      6 37  9 24  248 -201 
50673.50  15448  49325   471920  1398    3    3     6      6 37 10 25  244 -200 
50674.50  15682  49087   470527  1387    3    3     7      7 37 10 25  243 -185 
50675.50  15860  48877   469173  1322    4    5     9      9 37  9 25  205 -202 
50676.50  16048  48667   467789  1445    4    4     7      7 37  9 25  248 -184 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 918:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 918 (1997 Aug 10 - Aug 16)
      97  8 10   97  8 11   97  8 12   97  8 13   97  8 14   97  8 15   97  8 16
prn   3d rss (cm)
  1       8          9         13         12          7         12          8   
  2      11         17         11         12         12         13         12   
  3      16         15         19         26         14         24         14   
  4       9          6         12         15         12          9         18   
  5      10          8          9          9          8          5          8   
  6      22         12         17         14         20         26         20   
  7       9          7          7          6         15         22         20   
  9       9          6          9          8          9          7         11   
 10      14          6          9          9         15         15         21   
 14       9                                7         10         14         27   
 15      16         13         13          7         10         11         12   
 16       8          7          7         10         16         17         13   
 17       9          7          9         27          9         20         55   
 18       8          5         10         12          9         14          8   
 19       8         10         34         41         11         13         19   
 21       9         15         16          8          7         15         16   
 22      19         21         15          8         15          9         22   
 23       7          7         10          6          7         20         23   
 24      16          6         14         20         14          8         24   
 25       9          7         10          8         10         12          7   
 26      10         12          9         13         12         29         52   
 27       9          8          9          7         10         20         11   
 29       6          6         10         11          8          8         16   
 30      10         24          9         11          9          6         14   
 31      12          7         11         10         16         23         24   
_______________________
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 918 (1997 Aug 10 - Aug 16)
 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   2.0    6.96        9.07        41.0        4.00        3.01    
ALGO*  7.0    314.        .742        50.7        5.62        2.99    
ANKR   3.8    136.       -.991        54.8        5.00        3.03    
AREQ   3.9    96.3       -.711        39.5        5.52        2.51    
ASC1   1.0    89.1       -.181        74.0        5.00        1.58    
BAHR   7.0    .562        128.        60.8        5.19        4.08    
BRUS   1.0    .342        5.07        60.0        5.00        2.87    
CAS1   4.7    13.4        370.        45.1        5.00        2.07    
CASA   1.9    17.4        452.        37.0        5.49        3.03    
CHAT   7.0    108.       -.729        77.9        5.00        2.70    
CHUR   1.0    200.        .606        36.0        5.00        1.77    
COCO   3.8    112.       -.403e+04      .         5.28        3.08    
CRO1   7.0    308.       -.725        48.7        7.12        2.21    
DAV1    .9    41.4        148.        31.0        5.00        1.77    
DGAR   4.0    119.       -.548        61.7        5.89        1.71    
FAIR*  6.9    15.6       -.893        35.0        5.00        2.37    
FLIN   4.0    82.8       -.952        47.4        6.26        2.56    
FORT   7.0    3.17       -1.33        48.3        6.18        3.15    
GODE   1.0    184.       -.151        43.0        6.00        2.80    
GOL2*  7.0    130.       -1.05        46.5        5.65        2.34    
GUAM   6.9    122.       -.736        56.7        9.67        2.27    
HARK   5.8    20.4        7.27        50.2        4.53        3.15    
HKLO   3.0    .288e+06    499.        51.3        7.35        2.75    
HOB2   1.9    82.8       -.163        49.2        5.49        3.01    
IISC   2.6    291.       -.673        68.7        6.00        2.11    
IRKT   4.8    .219       -.630        64.7        5.82        2.62    
KERG   5.9    131.        7.17          .         4.84        2.56    
KIRU   5.0    45.5       -4.27        54.4        7.21        2.33    
KIT3   1.9    140.       -.927        58.9        5.00        2.63    
KOKB*  6.4    84.2       -.616        71.9        6.44        1.76    
KOSG*  7.0    2.20       -16.1        45.0        5.22        2.56    
KOUR   2.0    2.91       -1.38          .         8.00        2.23    
KWJ1   7.0    338.       -.729        58.5        8.52        1.77    
MAC1   2.8    87.6       -.874        30.0        4.00        2.61    
MAD2   3.0    552.       -.115        99.7        6.69        2.29    
MADR*  6.6    .187        .927e-01      .         6.88        2.56    
MALI   4.9    126.       -194.          .         8.80        2.51    
MAS1   4.0    2.64       -.109        46.5        4.77        2.33    
MCM4   6.7    95.8       -.752        34.0        4.62        1.92    
MKEA   6.0    .165       -.891        41.9        6.18        2.64    
NOTO   1.0    .111        3.12        43.0        7.00        2.81    
ONSA   1.0    .204       -2.90        40.0        4.00        2.19    
PERT   7.0    2.52       -9.17        55.0        5.31        2.83    
RCM6   2.0    133.       -.588        63.1        7.52        2.58    
REYK   7.0    83.0       -.728        58.3        6.15        2.15    
SANT*  4.3    649.       -.968        36.3        5.72        1.32    
SELE   4.7    114.       -.653        36.9        5.00        3.14    
STJO   5.9    71.2       -.525        37.7        5.68        3.11    
TAHI   3.8    118.       -.911        74.5        7.02        2.70    
THU1   5.9    75.3       -.822        47.3        5.85        2.52    
TID2*  5.0    5.81       -.950        39.2        6.21        2.77    
TOUL   1.9    .454       -.920        53.5        6.00        2.81    
TSKB    .9    1.38       -.216        44.0        6.00        3.15    
USUD   5.8    .816       -.844        41.2        6.97        2.76    
WES2   1.0    .547       -1.07        56.0        5.00        3.10    
WTZR*  5.4    85.8       -1.85        64.5        5.58        2.80    
WUHN   4.9    9.23       -.551e+04    46.2        7.63        2.98    
XIAN    .9    98.0       -.154        35.0        4.00        2.83    
YELL*  6.8    .397       -.833        44.2        5.03        1.65    
PRN01  7.0    84.4        25.4        55.8        6.02        2.53    
PRN02  7.0    79.7       -393.        55.9        6.30        2.41    
PRN03  6.8    82.5        41.5        54.3        6.04        2.28    
PRN04  7.0    80.8        40.9        53.6        6.16        2.28    
PRN05  7.0    83.1        107.        51.4        5.60        2.61    
PRN06  6.6    80.6       -.976        54.0        6.46        2.29    
PRN07  6.6    82.1        751.        51.6        6.74        2.32    
PRN09  7.0    81.9       -8.40        52.3        5.87        2.46    
PRN10  7.0    80.9        10.8        53.2        6.31        2.34    
PRN14  5.0    82.7        20.7        47.3        6.04        2.41    
PRN15  7.0    3.66        456.        52.8        6.00        2.29    
PRN16  7.0    79.6        22.8        51.8        6.18        2.50    
PRN17  6.9    80.2       -157.        53.9        5.92        2.35    
PRN18  6.9    81.3        2.76        50.5        6.00        2.54    
PRN19  7.0    79.7        162.        52.2        5.88        2.53    
PRN21  7.0    81.0        72.9        51.5        5.73        2.52    
PRN22  7.0    81.8        9.52        50.3        5.87        2.60    
PRN23  7.0    84.8        1.93        54.0        5.88        2.54    
PRN24  7.0    81.3        707.        52.2        6.15        2.45    
PRN25  6.9    80.6       -6.43        48.7        6.15        2.25    
PRN26  6.9    82.0       -4.97        50.3        6.31        2.39    
PRN27  7.0    80.2        38.5        52.6        6.15        2.43    
PRN29  6.9    78.8        268.        51.6        5.86        2.70    
PRN30  7.0    81.1       -75.2        55.6        5.15        2.79    
PRN31  6.8    80.5       -1.03        52.1        6.48        2.41    
_______________________
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  8 10   97  8 11   97  8 12   97  8 13   97  8 14   97  8 15   97  8 16
prn   3d rss (cm)
  1     587        349        422        426        249        434        241   
  2     212        177        224        153        235        126        155   
  3     467        685        355        324        343        377        290   
  4     323        251        358        190        271        218        240   
  5     232        326        383        276        301        250        396   
  6     991        547        628        641        683        631        710   
  7     286        274        305        431        304        294        316   
  9     234        392        397        538        232        353        230   
 10     278        270        466        351        456        227        301   
 14     570                              293        578        570        505   
 15     364        284        283        261        314        294        199   
 16     625        624       2263        532       1009       1408       2270   
 17     291        254        173        136        147        336        150   
 18     411        577        508        499        532        500        546   
 19     799       1503        784        251        310        332        476   
 21     195        260        266        172        305        205        354   
 22     733        566        552        314        313        310        494   
 23     448        533       1116        510        383        344        406   
 24     561        428        480        368        393        324        323   
 25     374        357        303        453        440        307        331   
 26     217        308        260        257        285        350        388   
 27     396        377        341        378        361        374        362   
 29     404        412        499        576        603        154        497   
 30     233        428        420        274        206        269        169   
 31     505        664        858        204        256        415        618   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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