Subject: [IGSREPORT-4229] Wk 0925 JPL Analysis Report
From: D C Jefferson
Date: Mon, 13 Oct 1997 16:06:47 PDT

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IGS Electronic Report    Mon Oct 13 16:06:47 PDT 1997      Message Number 4229
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Author: D C Jefferson
Subject: Wk 0925 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0925 (DAYS 271-277, DATES 1997 Sep 28 - Oct 04)
******************************************************************************

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 (128.149.70.41),
directory pub/jpligsac/0925.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09257.sum         This text file.
jpl09257.erp         Earth rotation parameters for GPS week 925.
jpl09257.snx         Ground station coordinates for GPS week 925, SINEX format.
jpl0925[0-6].sp3     GPS ephemerides for GPS week 925, sp3 format.
jpl0925[0-6].tro     Ground station troposphere estimates for GPS week 925.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 11.0 cm

The antenna height for YAR1 has been updated per IGSMail 1689 and we reinstate
it as a fiducial station beginning day 272.

We continue to deweight data from PRN13, and we have excluded its solution
from all of the orbit products for this week.  Additionally, PRN14 and PRN29
appear mismodeled on day 271.  The former has been excluded from this day's
processing entirely, and the latter has been removed from the corresponding
orbit product (jpl09250.sp3) only.

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 ALGO) used as reference clock day 271.
WARNING: MKEA (not ALGO) used as reference clock day 272.
WARNING: NLIB (not ALGO) used as reference clock days 273 and 274.
WARNING: Data from PRN13 deweighted the entire GPS week 925.
WARNING: Data from PRN14 excluded day 271.
WARNING: Solution from PRN29 removed day 271.
WARNING: Data from BRMU, CSN1, FLIN excluded day 271.
WARNING: Data from CSN1, DGAR, HOLC, VCIO excluded day 272.
WARNING: Data from BRMU, CASA, CSN1, DAM2, HOLC, TAIW excluded day 273.
WARNING: Data from TAIW excluded day 274.
WARNING: Data from ONSA, SNI1, TAIW excluded day 275.
WARNING: Data from DGAR, ONSA, TIDB excluded day 276.
WARNING: Data from MEDI, ONSA, TAIW excluded day 277.

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 925 (1997 Sep 28 - Oct 04)
     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
50719.50  22096  38649   394543  2120    3    4     8      8 37 10 25   28 -312 
50720.50  22113  38380   392430  2105    4    3     8      8 37 11 26   20 -271 
50721.50  22125  38086   390303  2149    3    3     8      8 37 11 26   -5 -295 
50722.50  22140  37810   388151  2156    3    3     8      8 37 11 26   30 -294 
50723.50  22192  37516   385986  2173    3    3     9      9 37 11 26   23 -326 
50724.50  22184  37193   383853  2094    3    3     9      9 37 11 26   35 -318 
50725.50  22200  36846   381748  2116    3    4     8      8 37 10 26   25 -302 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 925:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 925 (1997 Sep 28 - Oct 04)
      97  9 28   97  9 29   97  9 30   97 10  1   97 10  2   97 10  3   97 10  4
prn   3d rss (cm)
  1      18          9          6         15          6         10         12   
  2       5          9         12          9         15         12         12   
  3      28         16         23         13         16         16         13   
  4      11          6         11         11          7          7          9   
  5      12          6          6         11          9          6         14   
  6      15          9          9          7          7         10          6   
  7       7          7         12          7         11         11          9   
  9      13          5          8          6         11          8         14   
 10      12         10          9          8          7         10         12   
 13      40         52         51         56         72         65         28   
 14                  6         12          6         11         11         20   
 15      23         22         12         16         24         19         16   
 16      16          8          8          5          9          6         16   
 17      15          5         22         19          8          7         18   
 18      16          5         10         10         16         15         26   
 19      18          6          9          7         10         19         24   
 21      16         12         26         21         23         15         19   
 22      18          6         13          7         10         10         14   
 23      16          6         15         13         20         23         19   
 24      17          6          8         10         12         12         10   
 25      26          5         11         13          8         12         16   
 26       7          8         10         10         10         10          6   
 27       8          9         12         12         13          9         21   
 29      78          7          8          7          8          8         17   
 30       7          5          6          6          6          8         12   
 31      16         15         13         14         21         16         18   
_______________________
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 925 (1997 Sep 28 - Oct 04)
 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    22.2        138.        37.0        5.00        2.83    
ALGO*  7.0    29.7        .275        47.6        4.31        2.92    
AREQ   1.0    101.       -.254        55.0        5.00        1.61    
ASC1   6.9    228.        .929e-01    69.7        4.45        1.85    
BAHR   4.9    .667        743.        57.2        4.60        2.90    
BRAZ   1.0    97.7        .175e-01    70.0        4.00        2.05    
BRUS   2.0    677.        7.77        61.5        5.00        2.79    
CAS1   4.6    .391e+05    113.        56.4        6.05        1.46    
CHAT   7.0    104.        .916e-01    78.4        5.16        2.43    
COCO   3.8    80.9       -339.        44.6        4.75        2.65    
CRO1   7.0    164.        .913e-01    50.4        5.46        2.02    
DGAR   4.1    233.        .151        69.7        6.34        1.58    
FAIR*  6.9    .173e+07   -.411e+04    37.8        4.59        2.02    
FLIN   2.0    90.8       -.210        50.6        4.53        2.79    
FORT   6.0    .130        .167        68.5        5.69        1.71    
GOL2*  7.0    1.07        1.07        43.5        4.31        1.94    
GUAM   7.0    129.        .855e-01    62.8        7.45        2.10    
HARK   2.9    29.1        .731        58.0        4.37        2.91    
HKLO   1.0    .290e+06    497.        51.0        6.00        2.97    
IISC   6.8    .441e+07    .352e+04    76.0        5.86        2.10    
IRKT   5.9    .191        .879e-01    57.2        4.52        2.36    
KELY    .7    .341e+04   -.520        35.0        5.00        1.87    
KERG   7.0    .282e+04    519.          .         5.00        2.39    
KIRU   1.0    1.52       -.616e-01    54.0        6.00        2.68    
KIT3   2.0    122.       -.106        66.5        4.52        2.65    
KOKB*  6.2    239.        .247        86.3        6.13        1.61    
KOSG*  7.0    1.30       -14.5        44.7        4.16        2.56    
KOUR   1.0    3.32       -1.68          .         6.00        1.64    
KWJ1   7.0    109.        .876e-01    73.1        7.29        1.64    
LHAS   3.9    99.3        .569e-01    56.7        5.00        2.40    
LPGS   1.0    123.       -.205        56.0        5.00        3.18    
MAC1   4.7    82.1        .892e-01    34.2        4.00        2.23    
MADR*  6.4    .693       -.437          .         6.00        2.31    
MALI   7.0    68.5       -18.5          .         7.30        2.20    
MAS1   7.0    58.1        .666        47.2        4.77        2.32    
MCM4   7.0    102.        .904e-01    40.7        5.15        1.29    
MDVO   4.9    .374e+05    418.        73.7        6.00        1.97    
MKEA   6.0    .710e-01   -.231e-01    55.2        4.85        2.57    
NICO   2.0    91.6        .544e-01    33.0        5.00        2.63    
NLIB   2.0    .           .           49.0        4.53        2.47    
NOTO   2.0    .110       -.389        38.7        4.52        2.80    
PERT   7.0    2.99       -13.8        52.0        4.77        2.78    
PIE1    .9    .           .           48.0        4.00        2.44    
POL2   2.9    91.0        .191        48.7        3.69        2.45    
REYK   4.8    175.        .211e-01    59.0        6.18        1.95    
SANT*  5.6    218.        .296        50.4        4.69        2.24    
SELE    .6    107.       -.160        36.0        4.00        2.81    
SHAO   3.9    97.8        .270        47.5        4.28        2.84    
STJO   3.0    3.13        2.92        47.9        4.70        2.84    
TAEJ   1.9    .290e+06    500.        45.0        5.53        2.94    
TAHI   3.8    139.        .270e-02    84.8        5.55        2.32    
THU1   4.9    75.2        .141        47.2        5.62        2.07    
TID2*  7.0    52.5        .675e-01    37.4        5.31        2.73    
TOUL   2.0    .595       -2.09        53.5        5.00        2.88    
USUD   1.0    4.67        1.02        41.0        6.00        2.63    
WTZR*  6.9    .182        1.90        62.2        4.88        2.69    
WUHN   1.0    2.87       -29.8        49.0        5.00        2.55    
YAR1*  6.0    85.7        .105        37.3        4.18        2.16    
YELL*  6.8    303.       -1.10        57.6        5.32        1.81    
PRN01  7.0    83.0        29.6        56.9        5.15        2.04    
PRN02  7.0    82.6       -408.        61.0        5.00        2.47    
PRN03  7.0    80.0        57.7        58.1        5.30        2.07    
PRN04  7.0    80.8        49.7        58.3        5.59        2.12    
PRN05  7.0    81.3        116.        54.0        5.00        2.32    
PRN06  7.0    83.4       -.252        54.9        5.30        2.37    
PRN07  7.0    79.4        756.        55.0        5.00        2.18    
PRN09  6.9    79.4       -13.0        57.5        5.15        2.18    
PRN10  7.0    79.1        13.5        59.6        5.30        2.06    
PRN14  6.0    82.7        22.8        53.4        5.51        2.20    
PRN15  7.0    3.11        474.        60.5        5.31        2.10    
PRN16  7.0    81.4        30.1        59.1        5.45        2.58    
PRN17  7.0    81.5       -161.        59.3        5.15        2.06    
PRN18  7.0    80.5        5.24        56.6        5.45        2.40    
PRN19  6.9    78.5        247.        55.3        5.16        2.42    
PRN21  7.0    82.6        84.1        57.8        5.15        2.17    
PRN22  7.0    80.8        20.7        55.4        5.30        2.28    
PRN23  7.0    80.6        4.48        57.8        5.15        2.23    
PRN24  7.0    81.4        769.        57.4        5.45        2.15    
PRN25  6.9    79.9       -6.05        52.4        5.59        2.26    
PRN26  7.0    80.8       -22.3        55.2        5.15        2.22    
PRN27  6.9    79.0        2.59        57.3        5.00        2.58    
PRN29  7.0    81.3        274.        53.1        5.00        2.55    
PRN30  7.0    82.6       -1.48        53.3        5.00        2.43    
PRN31  7.0    81.2       -.363        56.6        5.31        2.10    
_______________________
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  9 28   97  9 29   97  9 30   97 10  1   97 10  2   97 10  3   97 10  4
prn   3d rss (cm)
  1     653        184        565        570        267        243        428   
  2     235        371        394        345        330        238        195   
  3     241        201        284        223        261        413        218   
  4     369        449        385        318        318        432        331   
  5     392        155        205        233        294        266        288   
  6     500        610        502        781        418        445        385   
  7     304        275        429        689        499        364        287   
  9     287        412        238        262        317        406        221   
 10     442        221        242        363        356        354        197   
 13     295        318        237        420        417        632       1133   
 14               1142        438        274        270        300        312   
 15     280        194        176        595        234        275        206   
 16     186        181        344        431        423        435        665   
 17     506        386        241        261        304        323        582   
 18     296        351        426        498        404        654        413   
 19     324        467        308        542        466        613        582   
 21     277        246        192        399        254        154        322   
 22     270        358        275        252        540        465        472   
 23     268        271        223        678        246        210        261   
 24     431        448        547        415        357        509        352   
 25     239        424        309        432        234        585        438   
 26     391        189        266        257        293        253        296   
 27     458        745        312        586        532        334        364   
 29     288        226        194        204        581        357        364   
 30     468        172        312        552        250        514        231   
 31     218        192        346        164        267        266        333   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   albh algo areq asc1 bahr braz brus cas1 chat coco cro1 dgar fair flin fort gol2 guam hark hklo iisc irkt kely kerg kiru kit3 kokb kosg kour kwj1 lhas lpgs mac1 madr mali mas1 mcm4 mdvo mkea nico nlib noto pert pie1 pol2 reyk sant sele shao stjo taej tahi thu1 tid2 toul usud wtzr wuhn yar1 yell

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