Subject: [IGSREPORT-2609] Wk 0849 JPL Analysis Report
From: D C Jefferson
Date: Tue, 30 Apr 1996 14:22:37 PDT

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IGS Electronic Report    Tue Apr 30 14:22:37 PDT 1996      Message Number 2609
******************************************************************************

Author: D C Jefferson
Subject: Wk 0849 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0849 (DAYS 105-111, DATES 1996 Apr 14 - Apr 20)
******************************************************************************

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/0849.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08497.sum         This text file.
jpl08497.erp         Earth rotation parameters for GPS week 849.
jpl08497.snx         Ground station coordinates for GPS week 849, SINEX format.
jpl0849[0-6].sp3     GPS ephemerides for GPS week 849, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 23.0 cm
  (excluding PRN03 on all days).

According to IGS Mail Message No. 1278, the Rogue receiver at FAIR was replaced
with the TurboRogue receiver used at FAI2 on day 107.  As FAIR is a fiducial 
site, we have deliberately excluded data from the receiver at this monument on
this and the following day, 108.

Beginning this week, we add a new station to our global network.  As with most
stations, this site is 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)
GALA (Galapagos Islands):     -33770.2804  -6377516.2565  -82093.9876

Although the newly launched satellite PRN03 was used in all of our analyses
this week, there was some mismodeling as shown by our orbit repeatability
table.  We have chosen to remove this satellite from our sp3 orbit products
for all days 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: Data from BRAN, FAIR, LPGS, MALI, MAS1, MATE, POTS, SFER, TABL, TIBB,           UPAD, USC1 excluded day 105.
WARNING: Data from BOGT, BRAN, FAIR, KELY, LPGS, MATE, NYAL, POTS, SFER, TABL,           TIBB, TRAK excluded day 106.
WARNING: Data from BRAN, FAI2, FAIR, KELY, LPGS, MAS1, MATE, NYAL, OHIG, POTS,           SFER excluded day 107.
WARNING: Data from FAI2, FAIR, IISC, KELY, MAS1, MATE, MCM4, SFER, VNDP                  excluded day 108.
WARNING: Data from FAIR, GOPE, KELY, LAMA, MATE, SHAO excluded day 109.
WARNING: Data from MATE, POTS, SFER, TRAK excluded day 110.
WARNING: Data from BOGT, POTS, SFER, SHAO excluded day 111.

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 849 (1996 Apr 14 - Apr 20)
     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
50187.50 -11894  53905   339927  2206    5    5    11     11 37 11 25  392  236 
50188.50 -11509  54184   337750  2147    5    5    12     12 37 11 25  371  221 
50189.50 -11152  54435   335585  2183    5    5    12     12 37 10 25  325  251 
50190.50 -10842  54678   333361  2265    5    5    12     12 37 11 25  326  238 
50191.50 -10579  54941   331164  2129    4    5    11     11 37 10 25  345  232 
50192.50 -10291  55145   329026  2148    5    5    11     11 37 11 25  347  200 
50193.50 -10004  55382   326878  2148    6    7    13     13 37 12 25  347  190 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 849:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 849 (1996 Apr 14 - Apr 20)
      96  4 14   96  4 15   96  4 16   96  4 17   96  4 18   96  4 19   96  4 20
prn   3d rss (m)
  1       0.1        0.11       0.13       0.14       0.18       0.15       0.26
  2       0.41       0.12       0.47       0.27       0.31       0.22       0.44
  3       1.08       1.48       1.15       0.87       0.49       0.50       0.47
  4       0.19       0.08       0.15       0.20       0.15       0.15       0.24
  5       0.21       0.12       0.05       0.23       0.16       0.13       0.17
  6       0.16       0.15       0.17       0.12       0.39       0.49       0.23
  7       0.14       0.12       0.25       0.25       0.27       0.19       0.35
  9       0.32       0.11       0.22       0.20       0.27       0.20       0.28
 14       0.17       0.18       0.17       0.15       0.17       0.14       0.15
 15       0.38       0.37       0.39       0.42       0.22       0.34       0.28
 16       0.44       0.32       0.26       0.38       0.77       0.57       0.57
 17       0.16       0.09       0.10       0.12       0.18       0.12       0.22
 18       0.12       0.12       0.10       0.10       0.10       0.24       1.21
 19       0.15       0.24       0.23       0.23       0.39       0.32       0.46
 20       0.14       0.12       0.11       0.12       0.17       0.24       0.20
 21       0.18       0.21       0.18       0.21       0.25       0.30       0.31
 22       0.14       0.14       0.21       0.21       0.24       0.14       0.17
 23       0.21       0.39       0.26       0.22       0.36       0.17       0.23
 24       0.22       0.07       0.09       0.08       0.18       0.12       0.12
 25       0.11       0.13       0.12       0.12       0.10       0.18       0.17
 26       0.16       0.23       0.28       0.23       0.35       0.19       0.21
 27       0.26       0.15       0.24       0.21       0.41       0.25       0.42
 28       0.46       0.32       0.17       0.13       0.31       0.51       0.28
 29       0.15       0.17       0.13       0.09       0.20       0.12       0.20
 31       0.28       0.20       0.34       0.16       0.17       0.26       0.53
_______________________
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 849 (1996 Apr 14 - Apr 20)
 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   5.0    28.5       -2.27        41.5        4.00        2.98    
ALGO*  6.3    .           .           45.0        4.17        2.63    
ANKR   4.0    234.       -2.02        68.3        4.27        2.88    
AREQ   6.0    87.2       -2.01        43.3        5.20        2.21    
AUCK   2.0    82.2       -2.05        38.0        4.53        2.81    
BOGT   1.0    105.       -2.05        71.0        8.00        .919    
BRMU   5.0    117.       -2.01        39.4        5.04        2.92    
BRUS   2.0    .226        1.12        59.0        4.00        2.89    
CAS1   1.9    .164e+05    63.1        41.5        4.51        1.98    
CHAT   5.9    94.9       -2.00        82.7        4.90        2.48    
CRO1   5.0    162.       -2.02        47.9        6.04        2.36    
DAV1   2.7    5.33        194.        30.6        5.00        .989    
FAI2   2.0    124.       -1.94        93.0        6.05        1.58    
FAIR*  2.0    .362       -2.15          .         5.00        2.10    
FORT   7.0    .145       -.193e+04    49.2        7.09        3.35    
GOL2*  7.0    .168       -1.47        50.0        4.75        2.88    
GUAM   6.0    99.3       -2.01        52.4        7.55        2.25    
HKLO   1.0    .289e+06    477.        48.0        4.00        .328    
IISC   2.0    73.7       -2.06        75.6        6.00        1.62    
IRKT   1.9    .601       -2.09        58.1        5.00        1.84    
JPLM   5.0    44.3        392.        27.7        4.06        2.81    
KERG   4.0    124.       -659.          .         5.73        2.52    
KIRU   3.0    3.15       -2.22        51.0        7.68        1.48    
KIT3   5.0    137.       -2.03        61.3        4.57        2.45    
KOKB*  7.0    .338e+05   -.226e+04    65.8        5.88        2.17    
KOSG*  7.0    4.16       -1.44        41.4        3.00        2.30    
KWJ1   2.9    86.6       -1.98        58.5        8.00        2.07    
LPGS   3.0    .215e+04   -2.48        55.1        6.58        2.07    
MAC1   2.8    74.5       -2.00        28.6        4.37        1.57    
MADR*  6.9    .643        20.0          .         5.02        2.36    
MALI   3.8    211.        48.2          .         8.13        2.03    
MAS1    .7    10.7       -4.10        55.0        4.00        .665    
MCM4   3.0    74.8       -1.98        34.2        4.61        1.70    
MDO1   5.0    .695       -1.05        33.2        4.22        3.00    
MDVO   1.0    .171        521.        71.0        5.00        .787    
METS   1.9    .543       -4.48        77.6        3.00        2.51    
NLIB   4.0    .300       -.747        46.6        4.92        2.83    
NOTO   5.0    .133       -11.6        34.5        4.35        2.76    
OHIG   2.7    .378e+04   -2.32        58.5        5.00        1.65    
PAMA   3.1    .670e+04   -2.30        117.        11.4        1.49    
PERT   6.0    2.21        37.3        51.1        4.92        2.96    
POL2    .9    81.9       -1.95        42.0        4.00        2.57    
RCM5   1.0    80.2       -2.03        70.0        4.00        .883    
REYK   6.0    82.3       -2.01        56.5        6.75        1.48    
SANT*  7.0    .106       -5.79          .         5.55        2.29    
SHAO   2.8    110.       -1.96        115.        4.00        2.38    
STJO   7.0    .101e+04   -3.02        38.1        5.00        2.67    
STRL   1.0    198.       -2.09        50.0        5.00        2.77    
TAEJ   1.0    .290e+06    520.        53.0        5.00        3.12    
THU1   7.0    73.8       -2.02        48.2        4.89        2.51    
TIBB   1.0    .293e+06    449.        60.0        8.00        3.02    
TID2*  7.0    34.4       -1.49        44.3        4.86        3.01    
TMGO   3.0    116.       -2.06        40.7        4.36        3.09    
TROM*  7.0    25.2        27.7          .         5.75        1.11    
TSKB   3.0    16.7       -1.96        49.7        4.36        2.75    
UCLP   1.0    99.7       -2.12        36.0        4.00        3.46    
UPAD   1.0    .291e+06    500.        79.0        7.00        2.83    
USNA   1.0    75.2       -2.10        55.0        4.00        2.60    
USUD   5.0    4.60       -1.16        38.0        4.26        2.40    
VCIO   1.0    .287e+06    516.        59.0        5.00        1.44    
VILL   6.0    .250e+04   -18.8        66.3        4.52        3.11    
VNDP   1.0    .289e+06    483.        28.0        3.00        3.78    
WEST   1.0    300.       -2.13        43.0        4.00        2.76    
WHI1   1.0    .211e+05   -1.13        67.0        4.00        3.11    
WINT   1.0    .288e+06    443.        62.0        6.00        3.06    
WLPS   1.0    129.       -2.09        73.0        5.00        3.12    
WLSN   1.0    106.       -2.09        70.0        8.00        2.81    
WSMN    .9    .289e+06    494.        59.0        5.00        .617    
WTZR*  3.8    2.16       -1.99        61.2        4.00        2.68    
YAR1*  6.6    816.        .957          .         4.20        2.28    
YELL*  6.9    568.        .200        46.5        5.71        1.38    
ZIMM   1.0    .288e+06    501.        63.0        5.00        2.66    
ZWEN    .9    98.3       -2.12        60.0        4.00        2.64    
PRN01  7.0    79.0        45.2        55.6        5.39        2.14    
PRN02  6.9    81.3       -250.        52.7        5.00        2.50    
PRN03  6.3    80.9        1.31        50.5        4.69        2.26    
PRN04  7.0    81.1        19.4        51.4        5.16        2.04    
PRN05  7.0    79.9        33.5        51.6        5.39        2.46    
PRN06  7.0    81.9        6.08        54.2        5.37        2.23    
PRN07  7.0    83.2        717.        54.1        5.00        2.20    
PRN09  6.8    80.9       -20.5        55.9        5.33        2.07    
PRN14  7.0    78.5        11.4        52.0        5.33        2.14    
PRN15  6.8    3.08        290.        57.3        5.00        2.02    
PRN16  7.0    81.4        5.63        50.4        6.87        2.22    
PRN17  7.0    81.9       -115.        52.3        5.18        2.24    
PRN18  7.0    81.0       -10.4        52.6        5.23        2.29    
PRN19  6.7    80.7        454.        49.2        4.96        2.25    
PRN20  7.0    80.6        12.0        54.9        5.06        2.25    
PRN21  7.0    82.1       -21.5        52.6        5.06        2.45    
PRN22  7.0    80.5        299.        55.2        5.04        2.01    
PRN23  7.0    78.9        7.42        51.1        5.00        2.03    
PRN24  7.0    81.1       -160.        54.7        5.55        2.19    
PRN25  6.8    81.9       -3.69        54.8        5.65        1.98    
PRN26  6.9    81.6       -183.        53.0        5.71        2.29    
PRN27  6.8    79.1        24.0        50.4        5.38        2.28    
PRN28  7.0    2.06        75.5        83.2        4.41        2.70    
PRN29  7.0    81.2        6.85        48.4        5.17        2.16    
PRN31  6.7    79.6        438.        55.0        5.22        2.18    
_______________________
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
      96  4 14   96  4 15   96  4 16   96  4 17   96  4 18   96  4 19   96  4 20
prn   3d rss (m)
  1       7.3        4.3        4.6        4.0        4.2        4.0        4.1 
  2       5.5        5.8        4.6        4.5        5.2        5.3        2.7 
  3       9.6        7.4        7.9        9.1       10.6       16.6       12.2 
  4       3.4        3.5        3.0        3.0        4.5        4.6        4.1 
  5       3.7        3.2        3.3        3.3        3.4        4.2        4.1 
  6       7.3        7.6        8.0        6.5        7.4        6.8        6.9 
  7       3.7        3.8        3.9        4.6        4.3        4.8        5.1 
  9       3.3        3.7        4.2        3.9        3.6        4.2        4.1 
 14       4.1        2.8        3.2        4.3        4.3        4.8        4.2 
 15       4.0        3.9        4.2        4.2        4.2        4.4        4.0 
 16      78.0       39.3       29.2       31.0       22.4       22.6       16.0 
 17       4.9        4.5        4.7        4.5        5.3        4.8        4.9 
 18       4.9        5.4        5.5        5.0        5.3        4.9        6.0 
 19       3.0        3.4        3.9        4.0        3.9        3.5        3.6 
 20       3.6        3.4        2.9        3.3        3.0        3.5        2.9 
 21       5.6        5.4        4.0        2.8        4.4        5.8        5.0 
 22       3.9        4.2        3.9        3.7        4.3        5.5        3.8 
 23       1.6        2.5        2.1        1.7        1.7        3.0        2.3 
 24       4.8        4.5        4.0        4.2        5.1        5.5        5.8 
 25       7.4        6.6        4.8        5.4        6.6        7.6        5.6 
 26       3.9        4.6        5.3        4.4        4.6        5.6        4.7 
 27       5.2        5.0        4.6        4.6        4.1        3.7        5.1 
 28       3.3        4.1        3.3        3.6        3.6        3.3        3.4 
 29       5.9        6.6        6.5        6.0        5.4        4.8        5.3 
 31       3.3        3.1        2.8        2.9        3.1        3.0        3.1 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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