Subject: [IGSREPORT-3894] Wk 0910 JPL Analysis Report
From: D C Jefferson
Date: Tue, 1 Jul 1997 16:33:00 PDT

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IGS Electronic Report    Tue Jul  1 16:33:00 PDT 1997      Message Number 3894
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Author: D C Jefferson
Subject: Wk 0910 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0910 (DAYS 166-172, DATES 1997 Jun 15 - Jun 21)
******************************************************************************

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/0910.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09107.sum         This text file.
jpl09107.erp         Earth rotation parameters for GPS week 910.
jpl09107.snx         Ground station coordinates for GPS week 910, SINEX format.
jpl0910[0-6].sp3     GPS ephemerides for GPS week 910, sp3 format.
jpl0910[0-6].tro     Ground station troposphere estimates for GPS week 910.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 14.0 cm

According to the file nanu1997.mes obtained from the IGS CBIS, PRN25 was
unusable on day 171 for maintenance/repositioning.  Data from this satellite
did not meet our initial convergence criteria on this nor the previous day
(170), and have been excluded from the analyses of both days.

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 166.
WARNING: PIE1 (not ALGO) used as reference clock days 167.
WARNING: Data from PRN25 excluded days 170 and 171 due to a maneuver.
WARNING: Data from FORT, MADR, YAR1 excluded day 167.
WARNING: Data from KELY, PIN1, SPK1, TAIW excluded day 168.
WARNING: Data from FORT, MAD2, PIN1, SNI1, SPK1 excluded day 169.
WARNING: Data from LMNO, PIN1, SPK1 excluded day 170.
WARNING: Data from KELY, LAMA, SANT excluded day 171.

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 910 (1997 Jun 15 - Jun 21)
     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
50614.50  -4134  52781  -451215  1543    3    4     8      8 37 11 25  415  139 
50615.50  -3753  52834  -452729  1485    3    4     8      8 37  9 25  397  129 
50616.50  -3408  52947  -454181  1418    3    3     8      8 37 11 25  416  132 
50617.50  -3044  53019  -455561  1342    3    3     8      8 37 11 25  425  122 
50618.50  -2670  53106  -456883  1302    3    3     8      8 37 11 24  400  153 
50619.50  -2285  53200  -458130  1192    3    4     8      8 37 10 24  394  111 
50620.50  -1907  53259  -459293  1135    3    3     8      8 37 11 25  406  147 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 910:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 910 (1997 Jun 15 - Jun 21)
      97  6 15   97  6 16   97  6 17   97  6 18   97  6 19   97  6 20   97  6 21
prn   3d rss (cm)
  1      18         10         14         16         16         13         10   
  2      45         16         10         20         14         12          7   
  3      17         17         12         16         18         11         14   
  4      34         35         12          5         12          5          5   
  5      47         16         59         26         34         48         31   
  6      26         18         13         12         11         18         15   
  7      25         19         15         16         24         19         16   
  9      42         21         17         25         24         20         23   
 10      28         15         10         12         11          9          8   
 14      16          6         12         13         11         17         21   
 15       8          9          7         14         10          9          9   
 16      16          9          6          6          6         14         11   
 17      19         14         14          8         15         16         14   
 18      22          9          4          6         12          8          8   
 19      15         14         10         14         14         16          9   
 21      19          8          7         15         14         11         12   
 22      14          9         11         12         12         13         11   
 23      16         17         10         12         17         14         13   
 24      33         20         17         20         13         16         10   
 25      25         15         11          8                               16   
 26      10         11          7          9         10         14          8   
 27      26         14          6          8          7         12          6   
 29      68         11         14         11         10         14         15   
 30      60         10         16         14         68         54         18   
 31      13          9         10         11         10         11          9   
_______________________
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 910 (1997 Jun 15 - Jun 21)
 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   1.0    18.0       -51.0        34.0        5.00        3.29    
ALGO*  6.9    .213        .287e-01    46.7        4.77        2.93    
ANKR   1.9    121.       -.280        56.5        5.00        2.78    
AREQ   1.0    98.8       -.654        40.0        4.00        2.46    
ASC1   5.9    80.9       -.510        65.0        6.00        1.67    
AUCK   1.0    76.5       -.222        40.0        4.00        2.82    
BAHR   6.9    .766        129.        50.2        5.03        3.96    
BRAZ   3.0    97.3       -.384        53.7        5.35        2.25    
CAS1   6.9    13.8        .326e+04    46.2        6.62        1.93    
CHAT   6.0    101.       -.530        78.2        5.17        2.68    
COCO   6.9    126.       -.466e+04    38.8        6.20        3.18    
CRO1   7.0    242.       -.496        49.3        6.36        1.93    
FAIR*  7.0    .117       -.166        37.6        4.87        2.66    
FLIN   1.0    87.4       -.308        52.0        5.00        3.02    
FORT   4.0    .128       -106.        48.8        5.70        3.09    
GOL2*  6.9    17.5       -.489        48.7        4.89        2.70    
GUAM   7.0    114.       -.494        69.3        10.0        2.61    
HART*  2.8    21.4        13.0          .         4.66        3.06    
IISC   5.9    83.4       -.440        68.1        5.51        2.46    
IRKT   6.8    .252       -.571        67.7        4.87        3.06    
KERG   7.0    112.       -3.59          .         5.59        2.55    
KIT3   6.0    149.       -.491        57.7        5.35        2.79    
KOKB*  6.9    173.       -.297        69.0        6.32        1.88    
KOSG*  7.0    1.17       -17.8        44.0        4.63        2.55    
KWJ1   7.0    118.       -.488        58.5        8.62        1.78    
LHAS   6.9    161.       -.472        50.6        5.76        2.32    
MAC1   6.3    84.8       -.481        29.1        4.29        2.56    
MAD2   1.0    .122       -.305        96.0        6.00        2.14    
MADR*  5.5    647.       -1.18          .         6.00        2.22    
MALI   6.0    19.8       -357.          .         9.18        2.56    
MAS1   5.9    111.       -.322        43.9        4.36        2.24    
MCM4   6.6    89.8       -.481        32.2        4.16        2.01    
MKEA   7.0    .105       -.863        42.4        5.30        2.93    
MOIN   5.6    96.6       -.471        64.3        6.23        1.85    
PERT   6.0    2.32       -2.73        54.3        5.20        2.81    
PIE1   2.0    .116       -.806e-01    52.5        5.00        2.67    
REYK   3.9    80.7       -.462        57.1        6.00        2.23    
SANT*  5.2    493.       -.397        35.1        5.70        1.53    
STJO   2.0    3.43        .147e-01    39.5        5.71        2.87    
TAHI   4.7    284.       -.582        76.2        5.76        2.14    
THU1   6.7    135.       -.475        45.4        5.00        1.79    
TID2*  7.0    9.21       -.544        35.3        5.00        2.95    
TOUL   5.0    .448       -.558        48.0        5.22        2.79    
USUD   7.0    .910        .464        37.3        5.63        2.74    
WTZR*  6.9    .354       -.602        61.7        4.87        2.60    
WUHN   3.8    6.88       -.498e+04    50.3        6.28        2.87    
YAR1*  6.0    2.94        2.62          .         4.69        2.52    
YELL*  7.0    .191       -.652        43.2        5.03        1.85    
PRN01  7.0    82.4        21.6        54.0        5.31        2.21    
PRN02  6.7    81.5       -375.        54.7        5.30        2.39    
PRN03  7.0    80.3        23.8        53.6        6.15        2.43    
PRN04  6.9    83.0        32.2        50.7        6.03        2.10    
PRN05  6.5    82.6        99.9        52.8        5.46        2.27    
PRN06  7.0    81.3       -.558        51.1        5.86        2.58    
PRN07  7.0    79.7        747.        56.6        5.73        2.34    
PRN09  6.9    81.9       -1.54        53.1        5.73        2.23    
PRN10  6.9    79.9        8.91        53.9        5.87        2.25    
PRN14  7.0    82.1        19.0        54.0        5.73        2.36    
PRN15  7.0    3.45        437.        53.6        6.00        2.36    
PRN16  7.0    81.4        15.6        55.8        5.60        2.52    
PRN17  7.0    81.9       -152.        51.4        5.60        2.48    
PRN18  7.0    81.3        .674        47.0        5.60        2.46    
PRN19  7.0    79.4        38.3        51.7        6.00        2.26    
PRN21  7.0    81.5        60.8        52.7        5.86        2.46    
PRN22  6.8    81.4        398.        50.3        6.00        2.44    
PRN23  7.0    81.2        .175        52.7        5.59        2.59    
PRN24  6.9    82.0        578.        52.5        5.90        2.34    
PRN25  5.0    81.2       -5.93        50.6        6.00        2.34    
PRN26  7.0    80.5       -193.        50.6        5.59        2.51    
PRN27  7.0    83.3        31.9        48.6        5.73        2.52    
PRN29  7.0    80.1        116.        53.4        5.46        2.74    
PRN30  6.6    78.7       -62.9        51.8        5.60        2.42    
PRN31  7.0    82.4        432.        52.6        6.00        2.34    
_______________________
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  6 15   97  6 16   97  6 17   97  6 18   97  6 19   97  6 20   97  6 21
prn   3d rss (cm)
  1     316        254        359        391        439        553        566   
  2     310        722        184        321        189        301        630   
  3     299        633        463        281        758        659        540   
  4     686        715        235        585        258        606        402   
  5     572        851        412        713        510        778        637   
  6     550        480        792        856        520        795        692   
  7     467        202        409        212        286        615        519   
  9     337        282        559        357        247        261        405   
 10     465        355        377        792        560        340        564   
 14     331        350        257        537        541        518        435   
 15     194        284        477        503        594        660        408   
 16     282        187        195        208        406        635        392   
 17     297        316        352        254        280        286        316   
 18     260        264        290        577        831        763        584   
 19     221        601        301        512        435        300        177   
 21     196        269        480        190        219        352        538   
 22     353        538        725        326        570        830        631   
 23    1020        683        682        510        640        972       1020   
 24     472        285        554        351        358        721        461   
 25     441        517        344        493                              724   
 26     276        249        208        296        300        327        279   
 27     267        290        377        404        289        373        220   
 29     295        463        527        370        437        361        375   
 30     380        342        338        370        525        561        567   
 31     463        798        506        966        999        635        544   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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