Subject: [IGSREPORT-4471] Wk 0937 JPL Analysis Report
From: D C Jefferson
Date: Tue, 6 Jan 1998 11:24:38 PST

******************************************************************************
IGS Electronic Report    Tue Jan  6 11:24:38 PST 1998      Message Number 4471
******************************************************************************

Author: D C Jefferson
Subject: Wk 0937 JPL Analysis Report

******************************************************************************
JPL ANALYSIS REPORT   GPS-WEEK 0937 (DAYS 355-361, DATES 1997 Dec 21 - Dec 27)
******************************************************************************

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/0937.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09377.sum         This text file.
jpl09377.erp         Earth rotation parameters for GPS week 937.
jpl09377.snx         Ground station coordinates for GPS week 937, SINEX format.
jpl0937[0-6].sp3     GPS ephemerides for GPS week 937, sp3 format.
jpl0937[0-6].tro     Ground station troposphere estimates for GPS week 937.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 9.0 cm

NOTICE
-------
Please note that the IP address of the anonymous FTP server where the above
products are kept has changed.  The new address is 137.78.60.30.  The old
address (128.149.70.41) is still operational, but will be disabled at some
point in the indefinite future.  Users can and should use the new IP address
as soon as possible.  The name of the server, sideshow.jpl.nasa.gov, has not
changed.

GENERAL
-------
Data from PRN02 and PRN19 were mismodeled on days 355 and 356 respectively.
Data from PRN08 were similarly mismodeled the entire week.  These satellites
have been excluded from the corresponding days' analyses accordingly.

We continue to deweight data from PRN08.  Also, data from PRN13 were mismodeled
on days 355 and 356, and we have elected to exclude this satellite from all
analyses 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: TID2 (not NRC1) used as reference clock day 357.
WARNING: USNO (not NRC1) used as reference clock days 358 and 359.
WARNING: Data from PRN02 excluded day 355.
WARNING: Data from PRN08, PRN13 excluded the entire GPS week 937.
WARNING: Data from PRN19 excluded day 356.
WARNING: Data from FORT, SANT excluded day 355.
WARNING: Data from FORT, KOUR, TSKB excluded day 356.
WARNING: Data from RCM6, TSKB excluded day 357.
WARNING: Data from KOUR, RCM6, TSKB excluded day 358.
WARNING: Data from KOUR excluded day 359.

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 937 (1997 Dec 21 - Dec 27)
     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
50803.50  13089  18907   228704  1687    3    3     8      8 37 10 24 -261 -201 
50804.50  12825  18760   226969  1783    3    3     8      8 37 10 24 -240 -196 
50805.50  12533  18610   225209  1738    3    3     8      8 37  9 25 -285 -201 
50806.50  12206  18422   223498  1684    3    3     8      8 37 10 25 -266 -242 
50807.50  11937  18262   221788  1735    3    3     8      8 37 10 25 -298 -186 
50808.50  11669  18077   220146  1549    3    3     8      8 37 10 25 -229 -209 
50809.50  11430  17926   218588  1567    3    3     8      8 37 10 25 -234 -193 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 937:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 937 (1997 Dec 21 - Dec 27)
      97 12 21   97 12 22   97 12 23   97 12 24   97 12 25   97 12 26   97 12 27
prn   3d rss (cm)
  1       7          8          4          5          5          6          8   
  2                 14         10          9          9          9          5   
  3      10         14         11         11          6         10         19   
  4      11          5          9          9         11         10          7   
  5       5          7          6          7          8         11          6   
  6      10         11          7          8          8          9          8   
  7       6          7          7          8          9          8          9   
  9       5          4          7          7          9          8          9   
 10       8          8         15          8          8          9         10   
 14      11         12         12         13         17         13         15   
 15       9          5          6          9          8          7          7   
 16       8          9         11         16         14          8          9   
 17       8          8          4          7          7          8          8   
 18       9          9         13         17          9         14         22   
 19       8                    11         12         13          7         10   
 21      20          7         10          6          8         12          9   
 22      17         13          9          9         14         14         24   
 23       8         10         10         10         10         15         11   
 24       5         11          8         17         15         13         14   
 25      10         10         12         10          8          9         15   
 26       7         11         13         12          6          8         11   
 27       6          7         14          8          7          6          7   
 29       5          5         10          8          9         10          8   
 30       5          6          5          7          8          9          6   
 31       7          8          8         11          9         12         11   
_______________________
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 937 (1997 Dec 21 - Dec 27)
 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    .948e-01    3.55        46.3        4.00        3.21    
ANKR    .9    187.       -.268        57.0        4.00        3.01    
AREQ   7.0    98.3       -.199e-01    47.8        4.00        2.64    
ASC1   6.9    570.       -.233e-01    74.3        4.59        1.61    
BAHR   7.0    .596        234.        42.7        5.03        3.62    
BRAZ   3.0    111.        .308e-01    62.3        6.00        1.83    
CAS1   5.7    23.5        498.        37.4        5.55        1.55    
CHAT   7.0    111.       -.226e-01    75.6        5.31        2.97    
COCO   7.0    102.       -.214e+04    42.2        4.87        3.25    
CRO1   5.8    180.        .240e-01    43.5        5.52        2.03    
DAV1    .8    93.5        .108        39.0        4.00        1.46    
DGAR   6.9    123.       -.217e-01    72.5        6.17        1.51    
EISL   6.9    130.       -.127e-01    50.0        5.45        3.03    
FAIR*  7.0    .888e-01   -.210        38.6        4.00        2.50    
FLIN   2.0    80.6        .128        38.5        3.00        2.69    
FORT   2.9    .150       -.112        66.1        6.36        1.54    
GALA   1.0    75.0        .111        54.0        6.00        1.83    
GOL2*  6.7    918.        .950        68.9        4.17        1.87    
HARK   5.7    350.        1.33        58.5        5.35        2.70    
IISC   7.0    85.9       -.188e-01    68.0        5.16        2.52    
IRKT   4.8    .153       -.426        47.5        5.00        2.49    
KERG   6.6    .370e+04    959.          .         5.30        2.77    
KIRU   2.0    1.97        3.46        50.0        6.00        2.37    
KIT3   2.8    114.       -.709e-01    56.3        4.67        3.12    
KOKB*  7.0    .129        .101        54.9        5.60        2.56    
KOSG*  5.8    8.75       -1.36        40.5        4.76        2.49    
KOUR    .8    410.        1.86          .         3.00        1.91    
KWJ1   6.9    126.       -.277e-01    54.9        6.00        1.92    
LPGS   3.8    449.       -.770e-01    68.0        4.75        3.29    
MAC1   5.7    90.9       -.466e-01    47.3        4.00        2.75    
MAD2*  6.9    281.       -.769        66.1        5.77        2.04    
MCM4   6.9    103.       -.169e-01    63.9        5.00        1.43    
MDVO   1.9    .200        212.        76.5        6.00        1.98    
MKEA   5.0    68.0       -.444e-01    43.2        4.81        2.56    
MOIN   5.8    92.7       -.279e-01    62.7        5.84        1.80    
NRC1   3.9    .           .           53.7        3.55        3.38    
OHIG   3.7    .134e+07    20.2        51.5        4.00        1.11    
PERT   5.0    2.52       -10.3        52.0        4.62        2.84    
POL2    .9    83.8        .946e-01    58.0        4.00        2.71    
REYK   5.0    77.7        .278e-02    59.0        6.20        1.99    
SELE    .9    116.        .127        34.0        5.00        3.00    
STJO   1.0    1.61        .363        40.0        4.00        2.73    
TAHI   4.8    141.       -.686e-01    86.5        6.62        2.54    
THU1   7.0    136.       -.152e-01    53.0        5.00        2.59    
TID2*  7.0    13.3        .338e-01    41.0        5.73        2.90    
USNO   2.0    .           .           50.0        5.00        2.91    
USUD   7.0    .170e+04    4.51        41.5        4.00        3.10    
WES2   1.0    .110        2.21        58.0        4.00        2.91    
WTZR*  7.0    .263        1.01        60.5        4.60        2.75    
WUHN   5.9    7.85       -386.        44.5        4.53        2.69    
XIAN   1.0    90.2        .122        54.0        4.00        3.29    
YAR1*  7.0    94.7       -.116e-01    40.5        4.00        2.31    
YELL*  7.0    63.7       -1.65        39.2        4.00        2.33    
PRN01  7.0    82.7        35.5        55.2        5.00        2.12    
PRN02  6.0    80.0       -437.        56.7        5.00        2.26    
PRN03  7.0    83.9        83.0        55.2        5.00        2.46    
PRN04  6.9    81.0        2.57        51.3        5.00        2.14    
PRN05  7.0    79.3        127.        50.9        5.00        2.61    
PRN06  7.0    81.3       -.118        53.3        5.00        2.36    
PRN07  7.0    80.5        764.        56.2        5.00        2.45    
PRN09  7.0    81.5       -23.3        52.2        5.00        2.44    
PRN10  6.8    82.0        16.6        56.8        5.03        2.21    
PRN14  6.7    79.9        25.0        53.8        5.00        2.23    
PRN15  7.0    2.64        504.        55.3        5.00        2.52    
PRN16  6.8    81.5        41.8        60.1        5.15        2.19    
PRN17  7.0    80.0       -169.        56.2        5.00        2.16    
PRN18  7.0    80.2        8.94        55.0        5.16        2.45    
PRN19  6.0    78.6        344.        56.5        5.00        2.21    
PRN21  6.6    82.9        12.9        56.5        5.63        2.21    
PRN22  6.8    83.8        37.6        55.4        5.00        2.32    
PRN23  6.6    81.2        7.52        55.9        5.46        2.21    
PRN24  7.0    80.6        771.        55.0        5.47        2.34    
PRN25  7.0    79.6       -6.73        52.5        5.00        2.17    
PRN26  7.0    81.2       -60.1        52.6        5.00        2.29    
PRN27  7.0    80.2        12.4        53.2        4.86        2.64    
PRN29  6.9    82.8        29.4        55.9        5.00        2.54    
PRN30  7.0    81.7       -16.9        53.6        5.00        2.54    
PRN31  7.0    79.5        .541e-01    54.5        5.00        2.46    
_______________________
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 21   97 12 22   97 12 23   97 12 24   97 12 25   97 12 26   97 12 27
prn   3d rss (cm)
  1     435        326        244        182        181        347        516   
  2                159        459        439        199        221        327   
  3     327        334        454        357        360        249        243   
  4     433        408        660        562        356        394        486   
  5     346        439        352        334        325        430        329   
  6     540        557        645        628        654        800        759   
  7     292        304        296        434        244        194        238   
  9     267        238        395        328        210        415        491   
 10     498        217        660        846        433        376        391   
 14     465        679        703        617        755       2048        968   
 15     195        242        322        334        518        596        479   
 16    1422        541        480        520        692       1487        285   
 17     541        867        245        554        822        374        578   
 18     223        122        226        432        294        334        382   
 19    1372                   548        325        380        246        336   
 21     154        173        381        689        288        288        312   
 22     421        661        579        622        422        484        401   
 23     635        359        251        397        571        832        652   
 24     258        181        178        168        620       1877       2383   
 25     279        352        483        184        318        176        320   
 26     299        392        424        444        254        301        387   
 27     175        224        229        418        368        368        275   
 29     195        226        281        476        754        198        193   
 30     160        205        289        592        204        303        363   
 31     224        246        267        385        268        237        328   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   algo ankr areq asc1 bahr braz cas1 chat coco cro1 dav1 dgar eisl fair flin fort gala gol2 hark iisc irkt kerg kiru kit3 kokb kosg kour kwj1 lpgs mac1 mad2 mcm4 mdvo mkea moin nrc1 ohig pert pol2 reyk sele stjo tahi thu1 tid2 usno usud wes2 wtzr wuhn xian yar1 yell

[Mailed From: [email-masked]]