Subject: [IGSREPORT-2592] Wk 0848 JPL Analysis Report
From: D C Jefferson
Date: Mon, 22 Apr 1996 15:36:41 PDT

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IGS Electronic Report    Mon Apr 22 15:36:41 PDT 1996      Message Number 2592
******************************************************************************

Author: D C Jefferson
Subject: Wk 0848 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0848 (DAYS 98-104, DATES 1996 Apr 07 - Apr 13)
******************************************************************************

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/0848.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08487.sum         This text file.
jpl08487.erp         Earth rotation parameters for GPS week 848.
jpl08487.snx         Ground station coordinates for GPS week 848, SINEX format.
jpl0848[0-6].sp3     GPS ephemerides for GPS week 848, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 23.5 cm 
  (excluding PRN03 on all days, and PRN16 on days 103 and 104.)

Data from PRN01 did not meet our initial convergence criteria on days 103 and
104, and have been consequently excluded from the analyses of these two days.

Beginning this week, our processing has included data from the newly-launched
satellite PRN03.  As the orbit repeatability table shows, this satellite was
not well modeled.  We have therefore chosen not to include this satellite
in our sp3 orbit products this week.

Lastly, according to the file nanu1996.mes obtained from the IGS CBIS, PRN16
was unusable on days 103 through 106.  Although this satellite was used in
our analyses on days 103 and 104, we are excluding this satellite from our sp3 
files for these two days because of difficulty modeling the attittude due
to the failure of its second reaction wheel.

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 GUAM, IISC, IRKT, KELY, LONG, MATE, SHAO, TAEJ, TAIW                  excluded day 098.
WARNING: Data from GUAM, IISC, IRKT, KELY, MATE, POL2, SFER, SHAO, TAEJ, TAIW,           ZIMM excluded day 099.
WARNING: Data from ANKR, CHAB, GUAM, IISC, IRKT, KIT3, MAS1, MATE, POL2, SFER,           SHAO, TAEJ, TAIW, ZIMM excluded day 100.
WARNING: Data from MATE, SFER, TABL excluded day 101.
WARNING: Data from MATE, SFER excluded day 102.
WARNING: Data from FAIR, KELY, MATE, TIBB, TROM, UPAD, USC1 excluded day 103.
WARNING: Data from DAV1, KOKB, MALI, MATE, SFER, TABL, TROM, USC1 excluded day           104.

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 848 (1996 Apr 07 - Apr 13)
     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
50180.50 -13967  52062   356174  2401    5    5    12     12 37 12 24  258  207 
50181.50 -13735  52232   353755  2437    5    5    12     12 37 12 25  305  228 
50182.50 -13436  52503   351367  2340    5    5    12     12 37 11 25  304  270 
50183.50 -13139  52794   349026  2341    5    5    12     12 37 11 25  295  270 
50184.50 -12878  53092   346702  2308    5    5    12     12 37 11 25  308  249 
50185.50 -12509  53475   344436  2224    6    6    13     13 37  9 24  325  271 
50186.50 -12318  53626   342177  2294    5    6    12     12 37 10 24  357  228 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 848:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 848 (1996 Apr 07 - Apr 13)
      96  4  7   96  4  8   96  4  9   96  4 10   96  4 11   96  4 12   96  4 13
prn   3d rss (m)
  1       0.13       0.17       0.17       0.16       0.1                       
  2       0.31       0.42       0.32       0.17       0.26       0.79       1.30
  3                 16.7        9.65      12.29       1.96       1.75       1.09
  4       0.19       0.17       0.11       0.08       0.15       0.20       0.37
  5       0.13       0.10       0.10       0.14       0.14       0.18       0.20
  6       0.13       0.10       0.17       0.18       0.13       0.46       0.35
  7       0.12       0.14       0.19       0.08       0.16       0.22       0.23
  9       0.10       0.15       0.12       0.14       0.18       0.26       0.36
 14       0.14       0.10       0.10       0.11       0.25       0.35       0.36
 15       0.24       0.20       0.31       0.29       0.29       0.36       0.37
 16       0.20       0.14       0.15       0.16       0.64       2.84       4.77
 17       0.12       0.13       0.18       0.20       0.09       0.35       0.22
 18       0.11       0.09       0.09       0.08       0.16       0.30       0.19
 19       0.34       0.36       0.31       0.43       0.50       0.44       0.39
 20       0.10       0.17       0.17       0.11       0.16       0.25       0.19
 21       0.22       0.20       0.27       0.13       0.10       0.19       0.22
 22       0.08       0.21       0.22       0.14       0.19       0.20       0.30
 23       0.37       0.21       0.28       0.28       0.27       0.27       0.21
 24       0.12       0.08       0.08       0.12       0.19       0.19       0.35
 25       0.13       0.15       0.17       0.13       0.24       0.18       0.26
 26       0.15       0.20       0.21       0.14       0.31       0.36       0.53
 27       0.21       0.23       0.24       0.24       0.17       0.36       0.41
 28       0.30       0.12       0.19       0.44       0.51       0.39       0.41
 29       0.14       0.12       0.19       0.21       0.21       0.25       0.42
 31       0.23       0.22       0.26       0.51       0.56       0.37       0.21
_______________________
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 848 (1996 Apr 07 - Apr 13)
 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   4.0    374.       -.414        41.6        4.00        2.90    
ALGO*  6.9    .           .           45.6        4.03        2.91    
ANKR   4.9    122.       -1.84        68.4        4.43        2.89    
AREQ   7.0    83.3       -1.84        41.9        5.61        2.45    
AUCK   6.0    74.3       -1.86        38.9        5.45        3.13    
BRMU   7.0    112.       -1.83        41.0        5.19        2.92    
BRUS   2.0    .267        .203        58.0        4.00        2.74    
CAS1   1.9    7.21        26.0        41.4        5.00        1.88    
CHAT   6.9    89.2       -1.84        83.2        5.17        2.92    
CRO1   5.9    142.       -1.84        47.5        5.87        2.36    
DRAO   3.0    1.01       -1.35        38.1        4.00        3.26    
EISL   2.9    .676e+07   -.148e+05    42.6        6.65        2.85    
FAI2   7.0    64.9       -2.20        79.4        4.79        2.38    
FAIR*  6.0    .100        .957          .         4.52        2.11    
FORT   5.9    .163       -.193e+04    48.2        7.26        3.78    
GOL2*  7.0    .688e-01   -1.40        47.2        4.15        3.62    
GRAS    .9    82.9       -1.87        33.0        3.00        2.98    
GUAM   4.0    101.       -1.88        59.8        7.04        2.44    
HOB2    .9    .285        2.87        51.0        4.00        2.97    
IRKT    .9    .186       -1.96        58.0        4.00        2.84    
JPLM   7.0    58.8        320.        28.9        4.07        3.03    
KELY   4.0    106.       -1.85        12.0        6.27        1.47    
KERG   7.0    143.       -659.          .         5.59        2.76    
KIRU   7.0    .655e+04   -33.0        51.2        6.87        1.95    
KIT3    .9    112.       -1.78        59.0        5.00        3.01    
KOKB*  6.0    .608e+05   -162.        62.3        6.05        2.52    
KOSG*  7.0    4.89       -1.84        41.6        3.00        2.49    
KWJ1   1.9    91.9       -1.82        55.1        7.00        1.94    
LPGS   3.6    .275e+04   -1.77        68.4        5.49        2.27    
MADR*  7.0    .880e-01    20.2          .         5.03        2.58    
MALI   3.9    150.        39.0          .         8.40        2.59    
MDO1   7.0    6.28       -.958        35.2        4.15        2.95    
METS    .9    .511       -3.97        79.0        4.00        2.54    
NLIB   7.0    .661e-01   -.622        45.3        4.03        2.99    
ONSA   4.0    .114        3.27        39.0        3.53        2.32    
PAMA   2.9    148.       -1.88          .         9.66        2.52    
PERT   7.0    1.95        38.0        48.3        4.65        3.43    
POL2   1.0    90.1       -1.92        52.0        5.00        2.90    
REYK   7.0    83.8       -1.84        54.4        6.02        2.15    
SANT*  6.9    .113       -5.64          .         5.59        2.74    
SHAO   3.9    99.0       -1.87        109.        4.63        2.40    
STJO   7.0    106.       -1.71        38.6        4.60        2.93    
THU1   7.0    71.4       -1.84        47.7        4.87        2.85    
TID2*  7.0    17.0       -1.37        44.2        5.02        3.28    
TIDB   1.0    .175       -1.45          .         4.00        2.81    
TMGO   4.0    106.       -1.83        51.3        4.27        3.14    
TROM*  5.0    5.54        106.          .         4.81        1.80    
TSKB   1.0    5.07        2.06        46.0        4.00        3.25    
USUD   6.0    3.96       -.992        36.2        4.34        2.83    
VILL   6.0    3.98       -26.1        65.3        4.35        3.02    
WETT   1.0    .655e-01   -.623          .         7.00        2.54    
WLPS   1.0    123.       -1.88        76.0        6.00        2.74    
WTZR*  2.8    .599e-01   -1.50        61.9        4.00        2.56    
YAR1*  7.0    .231e+06    32.1          .         4.50        2.53    
YELL*  7.0    121.       -1.12        48.5        4.87        1.93    
PRN01  5.0    82.8        31.8        52.8        5.00        2.49    
PRN02  6.9    81.3       -248.        51.2        5.00        2.81    
PRN03  3.5    75.8       -.625        50.4        4.83        2.84    
PRN04  7.0    80.2        18.5        48.9        5.15        2.43    
PRN05  7.0    80.1        32.6        50.2        5.30        2.77    
PRN06  7.0    79.3        6.06        51.1        5.15        2.64    
PRN07  7.0    81.7        717.        51.1        5.19        2.59    
PRN09  7.0    82.6       -19.5        53.3        5.00        2.57    
PRN14  7.0    79.4        11.5        49.0        4.87        2.50    
PRN15  6.9    3.68        288.        55.1        4.87        2.39    
PRN16  6.7    80.0        4.92        52.9        6.52        2.35    
PRN17  7.0    82.0       -114.        53.0        5.16        2.83    
PRN18  7.0    78.0       -9.99        53.0        5.00        2.69    
PRN19  6.8    82.1        448.        49.2        5.00        2.73    
PRN20  7.0    81.5        11.2        55.0        5.00        2.57    
PRN21  7.0    80.8       -20.8        52.6        5.00        2.91    
PRN22  7.0    80.6        297.        53.8        5.00        2.32    
PRN23  7.0    80.5        7.31        48.7        5.00        2.55    
PRN24  7.0    80.2       -123.        51.8        5.31        2.65    
PRN25  7.0    82.8       -3.45        53.2        5.00        2.46    
PRN26  6.9    79.7       -180.        51.2        5.31        2.65    
PRN27  6.9    79.3        23.4        49.3        5.00        2.60    
PRN28  7.0    2.12        74.3        81.6        4.60        3.40    
PRN29  7.0    81.8        6.77        48.2        5.15        2.59    
PRN31  6.9    78.4        424.        54.4        5.00        2.63    
_______________________
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  7   96  4  8   96  4  9   96  4 10   96  4 11   96  4 12   96  4 13
prn   3d rss (m)
  1       6.2        6.2        6.4        7.3        7.7                       
  2       3.6        4.7        5.5        4.2        3.9        4.0        3.6 
  3                  0.0       22.7       17.8       25.9        9.6        8.9 
  4       5.7        2.7        4.3        3.5        2.5        3.2        3.1 
  5       4.0        3.7        4.6        4.6        3.1        3.5        3.6 
  6       6.5        6.6        6.8        6.1        5.8        6.6        7.7 
  7       8.6        8.3        5.9        6.8        6.5        4.3        4.9 
  9       3.0        3.0        3.2        3.4        3.3        3.1        3.2 
 14       5.7        5.5        4.8        4.1        3.2        3.4        5.0 
 15       3.8        4.3        4.5        4.1        4.5        4.3        3.6 
 16       5.1        3.6        3.0        2.5        4.1        5.8      119.3 
 17       4.2        4.9        4.6        5.2        5.0        4.5        4.1 
 18       8.1        6.2        5.5        6.1        5.5        5.4        6.0 
 19       3.7        3.1        3.3        3.4        3.3        2.8        3.1 
 20       4.4        3.0        3.8        5.5        4.4        4.4        3.2 
 21       4.6        6.5        8.6        7.2        3.1        5.4        3.4 
 22       3.8        4.1        4.0        3.9        3.8        4.0        4.4 
 23       2.9        2.7        3.9        3.3        2.3        2.0        1.9 
 24       4.0        4.2        4.6        4.0        3.6        4.2        4.6 
 25       5.7        5.1        5.7        5.0        4.8        5.5        7.1 
 26       5.6        4.6        5.4        4.9        5.8        5.2        5.0 
 27       4.7        4.1        4.2        4.2        5.6        5.3        3.9 
 28       4.2        3.6        4.4        3.2        3.7        3.3        3.3 
 29       9.2        8.1        8.6        7.5        6.3        5.7        6.1 
 31       5.1        3.8        3.8        3.8        3.8        3.4        3.5 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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