Subject: [IGSREPORT-5678] Wk 0991 JPL Analysis Report
From: RETRO
Date: Tue, 19 Jan 1999 14:00:10 PST

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IGS Electronic Report    Tue Jan 19 14:00:10 PST 1999      Message Number 5678
******************************************************************************

Author: RETRO
Subject: Wk 0991 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0991 (DAYS 3-9, DATES 1999 Jan 03 - Jan 09)
******************************************************************************

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/0991.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09917.sum         This text file.
jpl09917.erp         Earth rotation parameters for GPS week 991.
jpl09917.snx         Ground station coordinates for GPS week 991, SINEX format.
jpl0991[0-6].sp3     GPS ephemerides for GPS week 991, sp3 format.
jpl0991[0-6].tro     Ground station troposphere estimates for GPS week 991.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 9.0 cm

Beginning this week, we add three new candidate global stations.  As with other
sites, these stations are 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)
GENO (Genova, Italy)           4507892.4757   707621.3856  4441603.4804
RIOP (Riobamba, Ecuador)       1255145.0273 -6253609.6002  -182569.8745
VENE (Venezia, Italy)          4379724.9130   957495.7955  4521605.1986

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 003, 007, and 008.
WARNING: FAIR (not USNO) used as reference clock day 006.
WARNING: Data from ASC1, LPGS, NICO, SANT excluded day 003.
WARNING: Data from COCO, LPGS, NYAL excluded day 004.
WARNING: Data from COCO, HNPT, LPGS excluded day 005.
WARNING: Data from COCO, KOSG, NICO excluded day 006.
WARNING: Data from COCO, NICO excluded day 007.
WARNING: Data from NYAL excluded day 008.
WARNING: Data from NICO, NYAL excluded day 009.

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 991 (1999 Jan 03 - Jan 09)
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
51181.50  137486  290998   7019464  10311  53  60  170  170 37  0 27  -561 -1379
51182.50  137200  289472   7009522   9573  53  62  171  171 37  0 27  -885 -1281
51183.50  136561  288286   7000261   8949  52  59  169  169 37  0 27  -301 -1213
51184.50  136574  287365   6990943   9687  53  58  170  170 37  0 27    77  -608
51185.50  136386  286830   6980898  10404  48  60  166  166 37  0 27  -243  -379
51186.50  136142  286252   6970731   9929  51  61  176  176 37  0 27  -462  -339
51187.50  135648  286144   6960710  10113  49  57  166  166 37  0 27 -1268   465
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 991:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 991 (1999 Jan 03 - Jan 09)
      99  1  3   99  1  4   99  1  5   99  1  6   99  1  7   99  1  8   99  1  9
prn   3d rss (cm)
  1       8          5          6         12         13          6          6   
  2      12          6          8          8          5         12         11   
  3       6          6          5          3          8          6         10   
  4       9          8         12         12          7          8         17   
  5      10         13         12          8          5          6          6   
  6      14         11          7          5         16         11         15   
  7      16         10          8         20          6         10         10   
  8       6         12          8          6         10          7          6   
  9       8         11          5          6          5          3          7   
 10      11         13          5          6          6          7          7   
 13      18         19          9         14         16         16         15   
 14       5         14         15         18          7         12          6   
 15       7         13         15          5          4          9          6   
 16      10         12         14         14         22         17         10   
 17      14         25          9          5          8          9         12   
 18      10         14          6         10         10          6         11   
 19      12         25         24         16         13         14         18   
 21       5         11          6         10          7          4          5   
 22      11         11         12         12         13         13         13   
 23      16         15         14          5          5         10         14   
 24       9         11          5          8          7         11          6   
 25       7         10          5          7         11         10         11   
 26      16         10         10         10          6          4          6   
 27      13          8         12          8          7         10         10   
 29       6          6          6          7          8          5          7   
 30      10          6          7          6          8          7          7   
 31       8          9         10          9          8          8          8   
_______________________
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 991 (1999 Jan 03 - Jan 09)
 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    19.6       -.565        54.0        4.00        2.65    
AREQ*  4.0    231.       -.745        65.8        4.00        2.34    
ASC1   3.6    .309e+05   -3.64          .         4.44        1.43    
AUCK   3.0    97.9       -.523        50.5        4.00        2.55    
BAHR   7.0    1.51        73.0        40.6        4.46        2.81    
BOGT    .9    226.       -.486        92.0        7.00        1.66    
CAS1   5.5    26.3        .222e+04    39.1        5.68        .906    
CASA   1.0    28.6        10.8        52.0        6.00        2.62    
CICE   1.9    88.7       -1.05        44.2        4.00        2.57    
CRO1   5.8    159.       -.668        49.6        5.84        1.73    
DAV1*  6.9    152.       -.625          .         5.30        1.26    
DGAR   6.3    616.       -.678        72.4        5.04        1.50    
EISL   6.9    139.       -.641        63.5        5.31        2.84    
FAIR*  7.0    27.2       -.718        57.0        4.15        2.12    
FORT*  4.5    1.25       -.723        82.4        6.00        1.40    
GALA   4.0    258.       -.619        65.3        4.23        1.68    
GODE    .9    .273        2.81        52.0        4.00        2.71    
GOL2*  7.0    354.       -3.34        70.7        3.91        2.17    
GUAM*  5.9    126.       -.614        85.5        6.33        2.23    
HOB2*  1.0    .127        10.6        52.0        4.00        2.74    
HRAO   4.0    5.18        1.03        58.0        5.77        2.81    
IRKT*  5.9    .236       -.639        48.1        4.35        2.59    
KELY    .9    95.1       -.435          .         5.00        1.60    
KERG*  5.9    .284e+04    762.          .         5.84        2.47    
KOKB*  6.9    .548       -.573        77.0        5.30        2.37    
KUNM   5.7    297.       -.686        65.8        4.34        2.55    
KWJ1*  6.8    .138e+04   -.601        74.1        6.62        2.00    
LPGS   1.0    195.       -.438        66.0        5.00        1.31    
MAC1*  6.9    96.4       -.642        43.3        4.31        2.28    
MAD2*  6.4    688.       -.610        75.7        5.98        2.16    
MAG0   3.9    .289e+06    478.        31.0        4.25        2.35    
MALI*  6.9    32.2        42.4        92.3        6.45        2.14    
MATE*  2.0    .169       -3.75        43.5        4.53        2.75    
MCM4   1.0    107.       -.425        52.0        5.00        1.34    
MDO1*  1.0    87.3       -1.35        51.0        4.00        2.66    
MDVO   2.8    .267        225.        66.6        5.70        2.17    
MEDI   1.0    .106       -3.02        33.0        3.00        2.64    
METS   1.0    .406        1.72        42.0        3.00        2.36    
NANO   1.0    2.21        397.        51.0        5.00        2.88    
NTUS   4.9    104.       -.535        93.8        5.43        1.47    
NYA1   2.9    .137       -1.10        43.0        5.69        1.34    
ONSA*  6.8    .937e-01   -5.00        40.6        3.74        2.13    
PIE1*  3.1    .           .           53.8        4.00        2.49    
POL2   2.0    72.9       -.735        55.0        3.00        2.56    
RIOP    .1    264.       -1.05        68.0        3.00        1.05    
SANT*  4.5    700.       -1.82        53.0        3.56        2.58    
SUTH   2.9    96.2       -.834        46.6        4.37        2.39    
THTI   3.9    .289e+06    489.        69.4        7.49        2.59    
THU1*  2.0    75.9       -.257        48.0        6.00        1.59    
TID2*  7.0    .128       -.913        47.8        5.73        2.52    
TOUL   1.0    .453       -.341        64.0        5.00        2.52    
TSKB*  7.0    1.54       -.505        46.4        4.00        2.99    
USNO   3.2    .           .           70.7        5.36        2.48    
USUD   6.0    .198        1.10        45.7        3.85        2.80    
VESL   5.1    .289e+06    501.        61.8        4.40        2.42    
WES2   1.7    .360       -.198e-01    54.5        4.00        2.79    
WTZR*  6.6    11.4       -3.66        66.9        4.63        2.60    
XIAN    .9    94.8       -.429        57.0        4.00        2.86    
YAKA   1.0    103.       -.434        59.0        4.00        2.72    
YAR1*  7.0    103.       -.645        42.8        4.31        2.45    
YELL*  7.0    .209       -.543        53.7        5.00        1.48    
PRN01  7.0    81.4        69.8        59.6        5.00        2.20    
PRN02  7.0    80.6       -10.1        63.6        5.00        2.23    
PRN03  6.6    80.8        81.3        63.5        5.15        2.04    
PRN04  7.0    79.9        394.        59.7        5.00        2.08    
PRN05  7.0    81.5        179.        57.2        5.00        2.44    
PRN06  6.8    81.0       -1.01        55.9        5.00        2.03    
PRN07  6.8    81.1        804.        64.6        5.31        2.19    
PRN08  7.0    81.2        650.        55.9        5.00        2.24    
PRN09  7.0    82.5       -26.2        56.8        5.00        2.29    
PRN10  6.9    83.1        30.1        62.7        5.00        2.07    
PRN13  7.0    80.4       -431.        61.5        5.00        2.18    
PRN14  6.8    82.1        10.6        59.1        5.17        2.19    
PRN15  7.0    3.26        638.        60.4        5.00        2.17    
PRN16  6.6    80.8        95.3        60.7        5.00        2.03    
PRN17  7.0    80.7       -200.        55.2        5.00        2.18    
PRN18  6.9    80.1        19.8        63.9        5.16        1.98    
PRN19  6.9    82.5       -94.3        61.8        5.00        2.03    
PRN21  6.9    81.1        2.02        57.7        5.15        2.01    
PRN22  7.0    82.5        603.        59.7        5.00        1.94    
PRN23  6.8    78.8        7.59        60.1        5.00        1.92    
PRN24  7.0    79.9        467.        61.1        5.00        2.11    
PRN25  7.0    78.7       -.480        56.1        5.00        2.10    
PRN26  7.0    79.4        745.        59.0        5.15        2.14    
PRN27  7.0    81.1        6.67        60.6        5.00        2.10    
PRN29  7.0    79.9        80.8        61.1        5.00        2.02    
PRN30  7.0    80.2       -4.03        55.8        5.00        2.09    
PRN31  6.6    81.5        11.3        63.9        5.16        2.05    
_______________________
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  1  3   99  1  4   99  1  5   99  1  6   99  1  7   99  1  8   99  1  9
prn   3d rss (cm)
  1     573        520        488        878        499        511        585   
  2     352        245        293        530        715        583        697   
  3     296        309        358        398        286        361        265   
  4     247        268        250        302        174        127        160   
  5     567        443        670        578        395        518        464   
  6     649        653        643        720        617        649        594   
  7     551        358        422        404        378        606        566   
  8     451        742        508        453        330        323        411   
  9     305        524        255        368        636        358        229   
 10     359        291        367        410        439        380        350   
 13     451        335        304        312        207        504        370   
 14     561        980       1642        520       1436        522       1665   
 15     299        186        201        288        224        251        406   
 16    1306        318        319        772        680        820        548   
 17     173        173        290        362        219        202        246   
 18     268        304        213        393       1123        944        304   
 19     280        453        287        317        190        136        142   
 21     411        320        524        622        267        303        337   
 22     392        422        300        478        686        273        270   
 23    1041       1266       1038       1381        952        426        448   
 24     162        231        210        198        197        201        216   
 25     623        225        393        383        575        466        273   
 26     523        253        216        353        353        447        514   
 27     165        274        342        238        315        416        397   
 29     337        421        298        632        443        433        263   
 30     217        276        221        199        173        307        316   
 31     220        393        981        649        280        324        644   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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