Subject: [IGSREPORT-4488] Wk 0938 JPL Analysis Report
From: D C Jefferson
Date: Tue, 13 Jan 1998 14:30:06 PST

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IGS Electronic Report    Tue Jan 13 14:30:06 PST 1998      Message Number 4488
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Author: D C Jefferson
Subject: Wk 0938 JPL Analysis Report

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JPL ANALYSIS REPORT GPS-WEEK 0938 (DYS 97.362-98.003, 1997 Dec 28 - 1998 Jan 03)
******************************************************************************

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/0938.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09387.sum         This text file.
jpl09387.erp         Earth rotation parameters for GPS week 938.
jpl09387.snx         Ground station coordinates for GPS week 938, SINEX format.
jpl0938[0-6].sp3     GPS ephemerides for GPS week 938, sp3 format.
jpl0938[0-6].tro     Ground station troposphere estimates for GPS week 938.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 10.0 cm

Data from PRN08 were mismodeled on days 97.362 through 97.365.  This
satellite's data have been excluded from the analyses of these days, and
subsequently deweighted for all other days this week.

Data from PRN14 were mismodeled on days 97.365 through 98.002, and have
been excluded from the analyses of these days.  Data from PRN18 were also
mismodeled on day 97.365 and have been excluded from this day's analysis
only.  Lastly, we continue to exlcude data from PRN13 this week.

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: MKEA (not NRC1) used as reference clock days 97.364-98.002. 
WARNING: Data from PRN08 excluded days 97.362-97.365, deweighted days                    98.001-98.003.
WARNING: Data from PRN13 excluded the entire GPS week 938.
WARNING: Data from PRN14 excluded days 97.365-98.002.
WARNING: Data from PRN18 excluded day 97.365.
WARNING: Data from MDVO, PIN1 excluded day 97.362.
WARNING: Data from CAGL, IISC, METS, WUHN excluded day 97.363.
WARNING: Data from METS, PIN1, QUIN excluded day 97.364.
WARNING: Data from PENC, SANT, SIO3 excluded day 97.365.
WARNING: Data from QUIN excluded day 98.002.
WARNING: Data from JPLM, NTUS excluded day 98.003.

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 938 (1997 Dec 28 - Jan 03)
     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
50810.50  11155  17812   217042  1526    3    3     8      8 37 10 25 -271 -184 
50811.50  10870  17700   215527  1503    3    3     8      8 37 11 25 -279 -167 
50812.50  10599  17614   213993  1566    3    3     9      9 37 11 25 -232 -165 
50813.50  10373  17518   212464  1491    3    4     9      9 37 10 23 -216 -163 
50814.50  10132  17430   210970  1498    3    3     9      9 37 11 25 -272 -167 
50815.50   9916  17358   209451  1539    3    3     9      9 37 11 25 -259 -130 
50816.50   9650  17286   207893  1577    3    3     9      9 37 11 26 -245 -135 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 938:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 938 (1997 Dec 28 - Jan 03)
      97 12 28   97 12 29   97 12 30   97 12 31   98  1  1   98  1  2   98  1  3
prn   3d rss (cm)
  1      11         10         13          4          4          8          8   
  2       6          8          7          8         10          8          7   
  3      13         13         19         14         10         12         13   
  4       6          8         11         16         10         12         13   
  5       8          4          8          9          9         10         12   
  6      10          8          8         10         25         23         12   
  7      10         13         13          7         12         12         10   
  8                                                  34         24         34   
  9       5          4          5         10         17         10         14   
 10      12          9         11         14         12         19         10   
 14      15         10         16                                          21   
 15      10          8          6          7          6          9          8   
 16       6          8         13         12         11         10         15   
 17       6         10          6          6         21         14         12   
 18      20         19         19                    12         20         26   
 19      14          7          5          7          9         10         11   
 21      11         11          9          7          6          6          8   
 22      20         13         13         22         11         17         12   
 23      13          7          7          8         12         12         35   
 24      18         11         10         16         12         13         15   
 25      12         14         12         16         16         14         15   
 26      11         13         10          7         16          8         13   
 27       8          7          5          8          7          7         11   
 29       6          9         12         22         16          7          8   
 30       5          3          8          9          8          8          8   
 31      11          9          9         12         10         10          7   
_______________________
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 938 (1997 Dec 28 - Jan 03)
 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    .393        4.31        52.6        4.00        3.01    
AREQ   6.0    101.       -.708e-01    49.4        4.69        2.63    
ASC1   4.3    .381e+04   -.114e-01    78.1        5.12        1.62    
BAHR   6.6    .557        234.        43.9        5.14        3.61    
CAS1   3.8    28.9        648.        36.8        5.53        1.47    
CASA   1.0    11.8        2.18        35.0        5.00        2.25    
CHAT   7.0    111.       -.112        76.3        5.16        2.79    
COCO   3.9    90.6       -.289e+04    42.8        5.00        3.28    
CRO1   7.0    170.       -.119        44.7        6.32        1.86    
DGAR   6.9    229.       -.105        77.0        6.63        1.48    
EISL   7.0    135.       -.101        55.2        5.32        2.72    
FAIR*  7.0    36.8       -.173        37.9        3.88        2.24    
FLIN   4.0    89.3       -.175        37.7        3.61        2.53    
FORT   7.0    .209       -.117        69.3        6.30        1.52    
GALA   3.0    97.0       -.127        70.0        6.69        1.67    
GODE   1.0    .181        .356        44.0        4.00        2.85    
GOL2*  7.0    .776e-01   -.495        50.1        4.31        2.32    
HARK   1.6    .198e+04   -1.11        58.4        5.00        2.68    
IISC   5.4    759.       -.234        65.6        5.20        2.16    
IRKT   3.9    .151       -.552        46.8        4.76        2.58    
KERG   5.5    .287e+04    .115e+04      .         5.17        2.70    
KIRU   5.0    2.50        3.16        50.4        6.20        2.16    
KOKB*  7.0    .137        .599e-01    60.9        5.30        2.47    
KOSG*  7.0    5.33       -5.20        42.0        4.00        2.43    
KOUR   2.1    .220e+04    .101e-01      .         4.00        1.96    
KWJ1   7.0    141.       -.109        59.3        6.00        1.85    
LPGS   2.8    529.       -.413e-01    67.8        5.36        3.20    
MAC1   1.7    .265e+04   -.469        47.4        4.00        2.19    
MAD2*  6.5    206.       -.175e-02    63.5        5.76        2.18    
MAS1   2.0    1.96        3.80        45.0        6.26        2.44    
MCM4   7.0    107.       -.103        58.8        5.00        1.28    
MDVO   1.0    .748e-01    212.        64.0        6.00        2.42    
MKEA   5.6    .528e-01    .430        50.2        4.69        2.44    
MOIN   3.9    95.3       -.855e-01    65.2        6.82        1.83    
NICO   1.3    82.8       -.155        40.0        4.00        2.45    
NOTO   2.0    .129       -6.51        32.5        4.00        2.86    
NRC1   3.0    .           .           59.4        3.37        3.12    
OHIG   2.9    87.9       -.693e-03    54.5        4.33        2.07    
PERT   5.0    2.27       -11.2        52.7        4.43        2.80    
POL2   2.9    86.0       -.153        59.8        4.00        2.67    
RCM6   2.0    95.8       -.648e-01    64.6        4.00        2.74    
REYK   7.0    77.9       -.101        61.4        6.29        1.90    
SANT*  3.8    .116e+04   -2.34        41.7        4.26        1.27    
SELE   3.8    106.       -.812e-01    33.8        3.53        2.75    
SHAO   1.0    84.0       -.277        47.0        4.00        2.52    
STJO   4.9    93.2        .111        46.0        4.86        2.35    
TAHI   3.8    166.       -.174        96.3        5.81        2.39    
THU1    .9    137.        .112        53.0        5.00        2.44    
TID2*  7.0    .903e-01   -.796e-01    40.6        6.16        2.85    
TSKB   1.0    2.55       -1.39        45.0        4.00        3.13    
USUD   6.0    .180e+04   -3.47        42.5        4.00        2.97    
WTZR*  7.0    .130        .970        64.9        4.31        2.68    
WUHN   2.7    5.00       -17.0        44.7        4.69        2.74    
XIAN   3.0    101.        .144        55.1        4.00        3.12    
YAR1*  7.0    98.1       -.105        40.4        4.00        2.33    
YELL*  7.0    7.40       -2.76        43.7        4.30        1.94    
PRN01  7.0    80.4        35.9        53.9        5.00        2.15    
PRN02  6.9    82.9       -440.        58.1        5.00        2.49    
PRN03  7.0    81.1        85.1        54.0        5.00        2.33    
PRN04  7.0    81.1        3.72        53.8        5.00        2.04    
PRN05  7.0    80.6        128.        49.0        4.74        2.65    
PRN06  7.0    83.0       -.239        51.2        5.00        2.30    
PRN07  7.0    81.3        765.        58.5        5.15        2.14    
PRN09  7.0    80.9       -24.3        53.1        5.00        2.35    
PRN10  6.8    80.1        16.8        58.9        5.00        2.20    
PRN14  3.8    79.5        25.2        53.9        5.00        2.35    
PRN15  7.0    3.74        507.        54.6        5.00        2.46    
PRN16  6.8    80.0        42.7        60.7        5.00        2.20    
PRN17  7.0    80.9       -169.        57.6        5.00        2.23    
PRN18  6.0    81.7        9.13        55.3        5.17        2.23    
PRN19  7.0    83.0        348.        56.4        5.00        2.17    
PRN21  6.6    80.6        14.2        56.7        5.73        1.99    
PRN22  6.9    83.2        38.7        55.9        5.15        2.13    
PRN23  6.6    79.8        7.77        56.0        6.15        2.22    
PRN24  7.0    82.6        765.        53.2        5.30        2.26    
PRN25  7.0    79.4       -6.82        49.9        5.00        2.13    
PRN26  7.0    80.5       -64.5        51.2        5.00        2.25    
PRN27  7.0    82.5        13.0        54.0        4.87        2.65    
PRN29  6.9    81.0       -4.33        53.5        5.00        2.41    
PRN30  7.0    80.1       -18.1        51.9        5.00        2.41    
PRN31  7.0    80.9        .102        57.0        5.00        2.61    
_______________________
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 12 28   97 12 29   97 12 30   97 12 31   98  1  1   98  1  2   98  1  3
prn   3d rss (cm)
  1     467        440        567        324        675        265        305   
  2     264        692        303        295        207        160        526   
  3     395        263        235        257        232        233        227   
  4     716        537        463        455        397        347        383   
  5     412        392        343        610        693        631        663   
  6     672        705        738        742        693        700        568   
  7     466        366        229        272        306        321        233   
  8                                                 551        448        411   
  9     257        207        237        194        256        292        186   
 10     486        578        619        462        304        372        491   
 14    1807        488        788                                         615   
 15     328        176        265        312        426        385        309   
 16     305        291        283        466        419        285        334   
 17     606        684        693        477        514        749        626   
 18     357        315        508                   297        320        216   
 19    2289        255        280        349        367        303        382   
 21     509        390        358        204        206        256        523   
 22     507        574       1108        609        810        404        712   
 23    1324        837       1171        906        901        981        405   
 24    1127        348        371        387       2182        442        728   
 25     572        524        280        240        403        470        283   
 26     271        426        252        197        244        411        473   
 27     392        328        199        365        236        220        431   
 29     278        382        130        132        311        159        143   
 30     227        282        249        320        243        192        171   
 31     493        264        211        217        244        290        180   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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