Subject: [IGSREPORT-5593] Wk 0987 JPL Analysis Report
From: D C Jefferson
Date: Fri, 18 Dec 1998 17:02:14 PST

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IGS Electronic Report    Fri Dec 18 17:02:14 PST 1998      Message Number 5593
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Author: D C Jefferson
Subject: Wk 0987 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0987 (DAYS 340-346, DATES 1998 Dec 06 - Dec 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/0987.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09877.sum         This text file.
jpl09877.erp         Earth rotation parameters for GPS week 987.
jpl09877.snx         Ground station coordinates for GPS week 987, SINEX format.
jpl0987[0-6].sp3     GPS ephemerides for GPS week 987, sp3 format.
jpl0987[0-6].tro     Ground station troposphere estimates for GPS week 987.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 10.0 cm

Data from PRN05 and PRN22 were mismodeled on days 340 and 344 respectively,
and have been excluded from the corresponding days appropriately.

Beginning this week, we add a new candidate global station.  As with other
sites, this station is given the opportunity to participate in the orbit and
clock solution as the global site distribution varies.  The following nominal
coordinates were assumed:
                                       X (m)         Y (m)         Z (m)
KUNM (Kunming, Yunnan, China)    -1281255.5705  5640746.2094  2682880.1284

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 341.
WARNING: PIE1 (not USNO) used as reference clock day 345.
WARNING: Data from PRN05, BAHR, COCO, FORT, HARK, HOLB, HOLC, MDVO, MKEA, SANT,          UPAD excluded day 340.
WARNING: Data from COCO, FORT, HARK, HOLB excluded day 341.
WARNING: Data from ASC1, COCO, HARK, HOLB, KOUR, KSTU, LPGS, MKEA, NSSP, NYAL            excluded day 342.
WARNING: Data from COCO, GOLD, HARK, HOLB, KSTU, LPGS, MKEA, NYAL excluded day           343.
WARNING: Data from PRN22, COCO, HARK, HNPT, HOLB, MKEA excluded day 344.
WARNING: Data from COCO, HARK, HOLB, HOLC excluded day 345.
WARNING: Data from COCO, CRO1, FORT, HARK, HOLB, MKEA, NICO, NYAL excluded day           346.

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 987 (1998 Dec 06 - Dec 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
51153.50  144680  332914  -2694166  12012  56  57  185  185 37  0 26 -1372 -1516
51154.50  143223  331887  -2706116  11888  49  52  178  178 37  0 27 -1069 -1594
51155.50  141883  330587  -2717752  11384  41  48  171  171 37  0 27 -1178 -1996
51156.50  140527  328951  -2728878  10868  47  50  173  173 37  0 27 -1261 -2087
51157.50  139333  326929  -2740004  11384  52  56  188  188 37  0 26  -814 -2111
51158.50  138511  324866  -2751254  11117  50  60  189  189 37  0 27  -494 -2551
51159.50  137762  322992  -2762476  11327  43  52  171  171 37  0 27  -594 -2273
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 987:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 987 (1998 Dec 06 - Dec 12)
      98 12  6   98 12  7   98 12  8   98 12  9   98 12 10   98 12 11   98 12 12
prn   3d rss (cm)
  1      11          7          5          9         12          9          8   
  2       9         10          8          8          8          8          9   
  3       8          6          5          4          5          6          6   
  4      20          9          5         10         11         14          8   
  5                  8         10         15         15         17         11   
  6      18         24         21         10         13          6          7   
  7      11          9          9          7         16         17          8   
  8      10         10          9         11         13         12         12   
  9       6          7          7         10         10          5          8   
 10       5         10         11         10         11          8         10   
 13      15         11         17         14          9         10         13   
 14      25         13         18         18         19          7         22   
 15      15         12         13          9         11         27         20   
 16      11         19         16         22          8          6          8   
 17      12          6          7          6          6         10          6   
 18      18         19         13         24         14         15         16   
 19       9         14          9         10          8         13          6   
 21       9          7          7          6          9         10          8   
 22      13         10          4         10                     7          7   
 23       9         14         12         12         16         14         12   
 24       6         11          9          9          4          8         11   
 25      11         11          7         16         23         17          9   
 26      11          9         12          8          9         10         14   
 27       8          9          5          6          6          7          8   
 29      12          7          9         10         10          8          7   
 30      16         11         13         13         10          9         10   
 31      11          7          6          4         10         11         12   
_______________________
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 987 (1998 Dec 06 - Dec 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    .107       -.737        58.4        4.00        2.81    
AOML    .9    106.        .128        65.0        6.00        2.61    
AREQ*  6.6    .117e+04   -.718        64.3        4.00        2.12    
ASC1   4.3    .352e+04   -.537          .         5.06        1.47    
AUCK   3.0    101.       -.658        56.4        5.06        2.49    
BAHR   4.5    .946        448.        39.1        4.00        2.85    
BOGT   1.8    209.       -.437        77.4        6.54        2.17    
CAS1   5.8    17.5        .125e+04    40.5        5.18        1.08    
CHAT   1.0    111.       -1.06        85.0        5.00        2.52    
CRO1   5.0    163.       -.847        52.2        5.81        2.04    
DAV1*  5.6    154.       -.649          .         4.67        1.24    
DGAR   4.2    455.       -.632        71.1        4.86        1.47    
EISL   7.0    141.       -.745        69.2        5.00        3.11    
FAIR*  7.0    11.7       -.850        59.7        4.45        1.98    
FORT*  3.9    60.4       -.674        85.0        6.27        1.45    
GALA   1.6    298.       -1.01        65.5        5.00        1.63    
GODE   1.0    .547e-01   -.312        54.0        5.00        2.48    
GOL2*  6.3    330.       -2.04        73.9        4.00        2.12    
GOUG   3.8    .289e+06    496.        62.8        5.00        2.79    
GUAM*  7.0    128.       -.775        83.5        7.15        2.16    
HOB2*  2.0    .930e-01   -2.10        51.0        6.05        2.73    
HRAO   4.8    .208        4.20        69.1        5.06        2.39    
IISC   6.0    102.       -.897        79.6        5.42        2.45    
IRKT*  6.9    .160        .150        49.7        4.88        2.52    
KOKB*  6.7    1.11        1.61        79.3        5.16        2.43    
KUNM   1.0    141.       -1.03        65.0        4.00        2.41    
KWJ1*  6.9    263.       -.729        88.5        6.58        1.93    
MAC1*  5.6    96.8       -.666        44.3        4.83        2.15    
MAD2*  6.9    185.       -.300        63.8        5.46        2.35    
MAG0   3.8    .290e+06    482.        31.3        4.52        2.37    
MALI*  7.0    .124e+04    2.67        90.1        6.46        2.12    
MATE*  6.0    .145       -2.20        46.6        4.00        2.89    
MCM4   2.0    89.9       -.463        49.5        4.53        .939    
METS   1.0    .400e-01   -6.53        40.0        3.00        2.46    
NANO   1.0    28.7        244.        48.0        4.00        2.97    
NSSP   1.0    104.       -1.05        61.0        4.00        2.49    
NTUS   6.0    108.       -.740        92.2        5.87        1.40    
NYA1   4.8    80.1       -.857        41.3        5.80        1.34    
ONSA*  6.7    197.       -2.93        38.9        3.60        2.24    
PIE1*  1.0    .           .           66.0        4.00        2.58    
POL2   6.0    84.3       -.683        66.6        4.00        2.53    
REYK   1.0    81.2       -1.05        63.0        7.00        2.05    
SANT*  3.6    580.       -1.65          .         3.17        2.42    
SUTH   2.0    100.       -.549        55.9        4.00        2.72    
THTI   4.9    .289e+06    503.        73.3        6.22        2.81    
THU1*  2.0    75.3       -.454        46.0        6.00        1.24    
TID2*  7.0    .800e-01   -.379        49.3        5.31        2.48    
TSKB*  6.9    1.61       -.382        49.0        4.16        3.02    
USNO   5.3    .           .           72.8        5.22        2.50    
USUD   6.0    246.       -3.32        45.3        4.19        2.66    
VESL   6.7    .289e+06    498.        60.8        4.98        2.08    
WTZR*  7.0    322.       -3.08        60.8        4.00        2.82    
WUHN   2.0    4.06       -554.        54.0        4.52        2.48    
YAR1*  7.0    941.       -.656        44.2        4.89        2.40    
YELL*  6.8    .293       -.728        52.4        4.42        1.60    
PRN01  7.0    79.1        67.1        58.8        5.00        2.18    
PRN02  7.0    81.7        .555        68.7        5.00        2.27    
PRN03  7.0    81.9        72.7        62.8        5.00        2.21    
PRN04  7.0    81.8        311.        56.7        5.00        1.97    
PRN05  5.9    81.0        174.        62.5        5.00        2.17    
PRN06  7.0    81.1       -1.20        60.3        5.00        2.00    
PRN07  7.0    79.0        801.        62.6        5.00        2.17    
PRN08  7.0    77.8        552.        57.6        5.00        2.11    
PRN09  7.0    82.6       -22.6        59.9        5.00        2.26    
PRN10  6.8    82.6        28.9        66.9        5.00        1.88    
PRN13  7.0    78.2       -387.        62.5        5.00        2.16    
PRN14  6.7    80.4        8.50        64.3        5.00        2.11    
PRN15  7.0    3.12        628.        62.3        5.16        2.25    
PRN16  6.7    79.9        91.1        68.1        4.87        1.96    
PRN17  7.0    79.9       -198.        61.1        5.00        2.17    
PRN18  7.0    79.7        18.6        65.3        5.16        2.06    
PRN19  7.0    80.6       -84.3        60.5        4.59        2.11    
PRN21  6.6    82.0        69.0        61.6        5.00        1.97    
PRN22  6.0    80.4        445.        62.7        5.00        2.15    
PRN23  6.7    80.7        6.50        60.4        5.32        2.07    
PRN24  7.0    78.2        546.        59.7        5.00        2.10    
PRN25  7.0    82.7       -.777        57.7        5.00        2.12    
PRN26  7.0    81.3        700.        60.2        5.00        2.17    
PRN27  7.0    81.0        3.82        61.6        5.00        2.24    
PRN29  7.0    82.2        160.        62.6        4.73        2.08    
PRN30  6.8    .181e+04   -7.94        60.9        5.00        2.05    
PRN31  7.0    81.6        9.95        62.9        5.00        2.39    
_______________________
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  6   98 12  7   98 12  8   98 12  9   98 12 10   98 12 11   98 12 12
prn   3d rss (cm)
  1     657        516        546        288        318        344        751   
  2     752        571        624        580       1007        782        601   
  3     216        305        272        236        236        328        320   
  4     344        385        993        366        347        303        209   
  5                451        381        277        370        372        499   
  6     611        760        727        698        620        529        643   
  7     328        392        322        256        324        219        267   
  8     452        460        357        546        253        208        238   
  9     403        335        427        208        282        346        320   
 10     229        373        452        305        449        549        373   
 13     386        399        332        328        336        317        249   
 14    2345        672       1607        610        824        889        434   
 15     462       1064        419        230        263        180        258   
 16     474       1798        335        391        426        416        499   
 17     423        359        146        163        263        416        255   
 18     870        216        264        345        314        317        226   
 19     346        181        235        354        238        246        328   
 21     589        311        594        198        654        396        330   
 22     328        331        391       1112                   269        299   
 23     404       1335       1419        340        516        414        706   
 24     313        287        313        437        488        357        193   
 25     312        341        356        354        835        387        488   
 26     387        525        187        246        278        303        311   
 27    1126        446        325        338        498        612        412   
 29    1319        231       1270        362        220        221        281   
 30     399        237        223        290        692        887        268   
 31     751        542        521        279        169        236        733   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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