Subject: [IGSREPORT-2576] Wk 0847 JPL Analysis Report
From: D C Jefferson
Date: Mon, 15 Apr 1996 16:18:00 PDT

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IGS Electronic Report    Mon Apr 15 16:18:00 PDT 1996      Message Number 2576
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Author: D C Jefferson
Subject: Wk 0847 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0847 (DAYS 91-97, DATES 1996 Mar 31 - Apr 06)
******************************************************************************

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/0847.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08477.sum         This text file.
jpl08477.erp         Earth rotation parameters for GPS week 847.
jpl08477.snx         Ground station coordinates for GPS week 847, SINEX format.
jpl0847[0-6].sp3     GPS ephemerides for GPS week 847, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 17.5 cm

Beginning day 091, we use TID2 and WTZR as fixed sites instead of TIDB and
WETB respectively.  As both of the new sites utilize Turbo-Rogue receivers, we 
analyze all pseudorange from both; these data were excluded when the older,
regular Rogues were used.  Since TID2 operates with the same Deep Space Network 
GPS antenna as TIDB, the constrained nominal coordinates have not changed.  
Nominal coordinates for WTZR, however, were obtained using the site tie 
information found in the file wtzr0196.log obtained from the IGS CBIS; note 
that they are slightly different from those mentioned in our AC summary 
jpl08447.sum (IGS Report No. 2518):

                        X (m)          Y (m)          Z (m)
                    4075580.6976    931853.6432   4801568.0256

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: ONSA (not ALGO) used as reference clock on day 094.
WARNING: Data from NOTO, NYAL, TABL, ZIMM, ZWEN excluded day 091.
WARNING: Data from FAI2, FORT, KELY, MAS1, TIBB, ZIMM, ZWEN excluded day 092.
WARNING: Data from FAI2, MATE, ZIMM excluded day 093.
WARNING: Data from DAM1, HOLC, MATE, TRAK excluded day 094.
WARNING: Data from HOLC, KELY, MADR, MAS1, MATE, TROM, ZIMM, ZWEN excluded day           095.
WARNING: Data from LONG, MAS1, MATE, ZIMM excluded day 096.
WARNING: Data from CHIL, MATE, TABL, ZIMM excluded day 097.

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 847 (1996 Mar 31 - Apr 06)
     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
50173.50 -15388  50478   372452  2245    4    4    12     12 37 12 24  290  288 
50174.50 -15098  50755   370197  2265    5    5    12     12 37 12 24  259  275 
50175.50 -14896  51071   367914  2302    4    5    12     12 37 10 24  221  260 
50176.50 -14716  51337   365616  2294    4    4    12     12 37 12 24  209  221 
50177.50 -14545  51548   363300  2338    4    4    11     11 37 10 24  255  201 
50178.50 -14355  51714   360950  2361    4    4    11     11 37 12 24  256  197 
50179.50 -14158  51890   358572  2395    4    4    12     12 37 12 24  259  215 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 847:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 847 (1996 Mar 31 - Apr 06)
      96  3 31   96  4  1   96  4  2   96  4  3   96  4  4   96  4  5   96  4  6
prn   3d rss (m)
  1       0.10       0.16       0.20       0.19       0.10       0.10       0.12
  2       0.17       0.27       0.12       0.20       0.18       0.19       0.24
  4       0.15       0.12       0.22       0.12       0.13       0.10       0.09
  5       0.14       0.07       0.06       0.13       0.12       0.09       0.14
  6       0.11       0.11       0.30       0.27       0.15       0.24       0.30
  7       0.16       0.23       0.21       0.19       0.15       0.17       0.15
  9       0.09       0.12       0.09       0.20       0.11       0.09       0.12
 14       0.14       0.12       0.14       0.16       0.07       0.12       0.17
 15       0.23       0.36       0.36       0.31       0.27       0.28       0.34
 16       0.17       0.13       0.17       0.12       0.08       0.24       0.34
 17       0.15       0.17       0.19       0.13       0.08       0.13       0.13
 18       0.23       0.25       0.16       0.07       0.14       0.13       0.10
 19       0.34       0.14       0.21       0.28       0.22       0.27       0.45
 20       0.25       0.14       0.08       0.09       0.16       0.10       0.10
 21       0.22       0.23       0.09       0.11       0.10       0.15       0.20
 22       0.10       0.18       0.19       0.17       0.16       0.10       0.16
 23       0.21       0.18       0.13       0.14       0.18       0.17       0.28
 24       0.13       0.12       0.20       0.13       0.12       0.12       0.13
 25       0.13       0.14       0.12       0.22       0.08       0.23       0.24
 26       0.16       0.23       0.21       0.19       0.23       0.22       0.19
 27       0.18       0.14       0.38       0.15       0.21       0.18       0.18
 28       0.27       0.17       0.15       0.19       0.31       0.41       0.34
 29       0.18       0.12       0.09       0.11       0.12       0.08       0.09
 31       0.36       0.14       0.23       0.20       0.23       0.23       0.25
_______________________
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 847 (1996 Mar 31 - Apr 06)
 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   3.0    6.94       -.134        41.5        4.33        3.06    
ALGO*  6.7    .122       -2.63        41.7        4.00        2.86    
ANKR   4.9    105.       -2.21        67.3        4.44        2.79    
AREQ   7.0    84.9       -2.06        42.6        4.47        2.44    
BRMU   3.0    108.       -1.67        39.6        5.00        2.65    
CAS1   2.9    10.5        467.        47.9        5.00        1.94    
CHAT   5.9    90.6       -2.11        84.6        5.70        2.97    
CRO1   7.0    134.       -2.06        46.6        6.12        2.20    
DAV1   3.8    4.72        479.        32.8        4.78        1.90    
EISL   6.8    .712e+07   -.139e+05    39.7        7.89        2.72    
FAI2   4.0    .438       -2.53        71.9        4.52        2.30    
FAIR*  7.0    .772e+06    167.          .         4.41        1.97    
FORT   4.7    .138       -.193e+04    48.2        8.25        3.40    
GODE   1.0    .358        .172e+05    48.0        5.00        2.89    
GOL2*  5.8    .714e-01   -1.75        46.1        4.39        3.38    
GUAM   7.0    97.8       -2.06        49.7        7.77        2.35    
IISC   7.0    71.7       -2.07        68.3        5.86        2.25    
IRKT   6.0    82.1       -2.14        55.0        4.51        2.75    
JPLM   7.0    50.9        249.        27.4        4.15        3.14    
KELY   1.6    .226e+04   -2.00        58.9        5.41        2.15    
KIRU   2.0    3.39       -70.4        56.1        7.51        2.04    
KIT3   5.9    117.       -2.07        61.5        4.19        2.83    
KOKB*  7.0    .135       -1.01        70.9        5.88        2.69    
KOSG*  7.0    1.94       -2.25        39.0        3.00        2.33    
KWJ1   3.8    88.6       -2.39        57.7        8.49        1.81    
LPGS   4.6    .103e+04   -2.23        55.8        5.19        2.01    
MAC1   3.6    71.2       -2.35        30.5        4.09        2.28    
MADR*  5.9    .219e+05    8.82          .         5.05        2.39    
MALI   6.9    163.        22.4          .         8.28        2.42    
MCM4   1.0    76.5       -1.75        38.0        4.00        2.21    
MDO1   1.0    2.13       -.882        32.0        4.00        2.97    
METS   1.9    .336       -3.21        67.8        3.00        2.15    
NOTO   2.8    .913e-01   -8.43        34.1        4.38        2.83    
ONSA   3.0    .882e-01    2.45        38.7        3.00        2.24    
PAMA   5.9    153.       -2.08          .         10.5        2.11    
PERT   7.0    2.07        38.3        47.4        4.75        3.15    
REYK   5.0    84.5       -1.68        57.7        5.85        2.13    
SANT*  6.9    .677e+05    13.8          .         5.17        2.61    
SHAO   6.0    87.9       -1.67        173.        4.69        2.04    
STJO   6.0    2.87       -3.20        39.6        4.35        2.76    
THU1   5.0    72.4       -2.19        48.8        4.83        2.94    
TID2*  7.0    .917e-01   -1.70        44.0        4.44        3.23    
TIDB   7.0    .124       -1.85          .         4.88        2.68    
TROM*  5.9    5.63        52.7          .         4.84        1.83    
USUD   7.0    5.95       -1.96        37.6        4.32        2.78    
VILL   6.0    .221e+04   -10.8        59.4        4.62        2.84    
WETT   5.8    .719e-01   -1.29          .         5.26        2.17    
WTZR*  2.0    .562e-01   -1.42        63.0        4.00        2.39    
YAR1*  7.0    1.92        3.53          .         4.59        2.55    
YELL*  7.0    .124       -1.27        46.4        5.15        2.05    
PRN01  7.0    80.4        20.7        65.7        5.59        2.41    
PRN02  7.0    81.3       -247.        59.7        5.46        2.69    
PRN04  7.0    80.8        17.1        53.6        5.59        2.41    
PRN05  7.0    82.5        31.2        54.4        5.31        2.54    
PRN06  6.9    78.8        5.64        56.1        5.72        2.38    
PRN07  7.0    81.1        716.        57.8        5.32        2.50    
PRN09  7.0    81.8       -18.9        57.1        5.31        2.31    
PRN14  7.0    80.3        11.2        58.7        5.16        2.48    
PRN15  7.0    3.54        285.        61.2        5.03        2.37    
PRN16  6.9    82.9        3.85        50.7        5.60        2.27    
PRN17  7.0    81.7       -113.        56.3        5.03        2.55    
PRN18  7.0    80.2       -10.1        54.5        5.60        2.55    
PRN19  6.9    79.5        441.        52.7        5.00        2.46    
PRN20  7.0    82.5        9.89        60.5        5.32        2.48    
PRN21  7.0    81.0       -20.5        61.4        5.31        2.56    
PRN22  7.0    81.9        295.        59.1        5.57        2.23    
PRN23  7.0    80.6        6.80        54.1        5.19        2.52    
PRN24  7.0    79.7       -87.3        54.6        5.71        2.57    
PRN25  7.0    79.5       -3.60        59.1        5.59        2.31    
PRN26  7.0    77.9       -176.        51.5        5.87        2.64    
PRN27  6.8    83.1        22.4        53.4        5.00        2.29    
PRN28  6.9    2.69        72.8        95.1        4.87        3.07    
PRN29  7.0    83.0        6.27        54.0        5.29        2.44    
PRN31  6.8    79.1        411.        61.3        5.61        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
      96  3 31   96  4  1   96  4  2   96  4  3   96  4  4   96  4  5   96  4  6
prn   3d rss (m)
  1       6.4        6.1        6.9        6.7        6.9        7.2        7.2 
  2       5.3        3.8        3.3        3.8        3.3        3.6        3.4 
  4       4.2        3.6        2.9        2.2        3.0        3.8        3.8 
  5       5.3        5.0        4.2        4.9        4.1        3.6        5.4 
  6       7.3        6.6        8.3        7.4        8.5        8.3        7.1 
  7       5.8        3.6        3.7        4.8        9.8        8.0        9.0 
  9       3.1        3.5        3.0        2.7        2.8        3.2        3.3 
 14       4.4        4.6        6.7        5.2        4.5        4.2        3.8 
 15       4.3        4.9        4.3        5.0        3.9        4.1        4.3 
 16       2.6        7.7        7.9        8.4        6.7        3.0        3.2 
 17       4.8        4.5        6.3        4.9        4.3        5.5        4.5 
 18       8.1        9.2        6.2        6.9        6.2        8.3       11.8 
 19       2.4        2.7        2.4        3.2        3.2        2.7        3.4 
 20       5.1        4.5        3.9        4.1        2.8        2.8        4.0 
 21       6.2        4.2        4.8        4.6        3.3        2.9        4.2 
 22       3.8        4.3        4.2        6.0        4.0        5.7        4.1 
 23       2.3        2.5        3.4        2.8        3.0        2.8        3.0 
 24       5.1        5.5        3.8        3.9        4.4        4.3        4.4 
 25       7.0        8.0        5.6        4.8        4.3        4.7        5.5 
 26       6.1        5.0        5.0        4.6        4.9        6.8        4.8 
 27       3.8        4.2        3.6        4.3        5.3        3.2        4.6 
 28       5.7        4.0        4.7        4.0        4.3        4.1        4.2 
 29       6.6        6.8        6.9        6.2        6.9        6.9        8.2 
 31       4.0        3.6        4.0        3.5        4.1        4.1        5.3 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   albh algo ankr areq brmu cas1 chat cro1 dav1 eisl fai2 fair fort gode gol2 guam iisc irkt jplm kely kiru kit3 kokb kosg kwj1 lpgs mac1 madr mali mcm4 mdo1 mets noto onsa pama pert reyk sant shao stjo thu1 tid2 tidb trom usud vill wett wtzr yar1 yell

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