Subject: [IGSREPORT-2159] Wk 0825 JPL Analysis Report
From: D C Jefferson
Date: Tue, 14 Nov 1995 15:53:32 PST

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IGS Electronic Report    Tue Nov 14 15:53:32 PST 1995      Message Number 2159
******************************************************************************

Author: D C Jefferson
Subject: Wk 0825 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0825 (DAYS 302-308, DATES 1995 Oct 29 - Nov 04)
******************************************************************************

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/0825.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08257.sum         This text file.
jpl08257.erp         Earth rotation parameters for GPS week 825.
jpl08257.snx         Ground station coordinates for GPS week 825, SINEX format.
jpl0825[0-6].sp3     GPS ephemerides for GPS week 825, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 19.8 cm

Beginning this week, we have increased the number of stations regularly used
in our precise orbit computation from 34 to 37.  Additionally, we exclude data
from PRN12 from our analyses beginning day 305.

According to IGSMail Message No. 1104, the GPS antenna at GOLD was replaced on
day 304.  Because we analyze a 30-hour data interval, we have chosen not to use
GOLD as a fiducial (fixed) station on days 304 and 305.

Beginning this week, we include data from two new stations.  As with most
stations, these sites are 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)
   NOTO (Noto, Italy):        4934529.8301   1321262.3166   3806480.6209
   USNA (Annapolis, MD):      1160669.4791  -4826885.7609   3990865.9356

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 BRAZ, IISC excluded day 302.
WARNING: Data from CMP9, DAV1, IISC, KELY, SEY1, UPAD excluded day 303.
WARNING: Data from CHIL, HOLP, SANT excluded day 304.
WARNING: Data from PRN12 excluded days 305-308.
WARNING: Data from CHIL, CRFP, DAV1, FARB, GOLD, HART excluded day 305.
WARNING: Data from CHIL, DAV1, FAIR, GOLD, HART, KELY, LAMA, NOTO, SIO3, TABL,           WHI1 excluded day 306.
WARNING: Data from CHIL, CLAR, DAV1, GOLD, HART, HOLP, KELY, MATE, NOTO, SIO3,           TABL excluded day 307.
WARNING: Data from CLAR, GOLD, HOLP, KELY, KOKB, MATE, SIO3, TABL excluded day           308.

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 825 (1995 Oct 29 - Nov 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
50019.50   3277   8079  -284204  2360    4    4    11     11 37 13 25 -362   25 
50020.50   2946   8110  -286600  2432    4    4    11     11 37 13 25 -345   48 
50021.50   2633   8131  -289075  2519    4    5    11     11 36 11 25 -346    3 
50022.50   2307   8160  -291624  2579    5    5    12     12 36 11 24 -341   34 
50023.50   1995   8194  -294174  2520    5    5    12     12 37 10 24 -350   56 
50024.50   1638   8201  -296685  2503    5    5    12     12 37 11 24 -343   24 
50025.50   1279   8268  -299167  2460    5    5    12     12 37 11 24 -346   63 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 825:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 825 (1995 Oct 29 - Nov 04)
      95 10 29   95 10 30   95 10 31   95 11  1   95 11  2   95 11  3   95 11  4
prn   3d rss (m)
  1       0.18       0.17       0.17       0.20       0.28       0.23       0.19
  2       0.14       0.10       0.09       0.10       0.18       0.22       0.14
  4       0.17       0.14       0.12       0.17       0.20       0.21       0.18
  5       0.14       0.18       0.12       0.16       0.14       0.17       0.19
  6       0.14       0.11       0.14       0.32       0.19       0.17       0.21
  7       0.14       0.10       0.13       0.19       0.20       0.15       0.11
  9       0.19       0.11       0.09       0.25       0.37       0.29       0.67
 12       0.38       0.40       0.3                                             
 14       0.10       0.11       0.25       0.31       0.12       0.15       0.15
 15       0.26       0.16       0.20       0.22       0.15       0.17       0.17
 16       0.13       0.17       0.26       0.22       0.18       0.16       0.12
 17       0.18       0.27       0.49       0.39       0.27       0.12       0.18
 18       0.12       0.17       0.18       0.33       0.27       0.14       0.11
 19       0.27       0.17       0.20       0.32       0.12       0.20       0.24
 20       0.22       0.15       0.23       0.25       0.31       0.21       0.27
 21       0.18       0.15       0.14       0.23       0.38       0.27       0.22
 22       0.07       0.17       0.22       0.21       0.15       0.16       0.14
 23       0.20       0.34       0.21       0.28       0.58       0.59       0.24
 24       0.09       0.20       0.18       0.21       0.18       0.24       0.12
 25       0.15       0.14       0.18       0.19       0.18       0.23       0.15
 26       0.17       0.12       0.26       0.28       0.18       0.12       0.12
 27       0.16       0.12       0.10       0.18       0.15       0.08       0.14
 28       0.11       0.16       0.13       0.16       0.33       0.34       0.32
 29       0.06       0.18       0.13       0.21       0.17       0.14       0.21
 31       0.13       0.13       0.19       0.10       0.25       0.27       0.22
_______________________
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 825 (1995 Oct 29 - Nov 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)
 |     |      |           |           |           |           |
 |___  |__    |_______    |_______    |___        |___        |__
ALGO*  6.9    .           .           38.2        3.63        3.06    
ANKR   1.8    922.       -.689e-01    56.2        3.46        2.36    
AREQ   5.4    74.9       -.831e-01    39.9        5.20        2.74    
AUCK   5.8    68.4       -.839e-01    34.7        4.19        2.51    
BOR1   6.0    2.35       -2.21        31.1        3.37        3.28    
CAS1   7.0    .180e+06    .109e+04    51.9        4.90        1.61    
CICE   7.0    142.       -.731e-01    27.1        4.33        2.79    
CRO1   7.0    115.       -.816e-01    35.3        7.92        2.54    
FAIR*  6.0    11.3       -.149          .         4.70        2.01    
FORT   3.1    .462       -.167        32.0        5.41        3.10    
GOLD*  1.9    .524        7.50          .         3.00        3.54    
GUAM   7.0    91.7       -.863e-01    43.9        7.91        2.73    
HART*  4.0    75.4        11.3          .         5.38        2.79    
HOB2   6.0    .362        2.47        45.6        4.87        2.75    
IISC   4.5    .151e+04   -.158        65.2        5.62        2.00    
IRKT   6.6    .357e+06   -391.        50.1        4.60        2.76    
KERG   7.0    154.       -181.          .         5.30        2.31    
KIRU   1.0    3.23       -.575        50.0        7.00        1.92    
KIT3   4.8    .307e+04   -.197        89.4        4.42        2.84    
KOK2   7.0    156.        .972        44.4        6.59        2.70    
KOKB*  6.0    121.        1.19          .         6.18        2.81    
KOSG*  7.0    11.1        1.01          .         3.59        2.59    
KOUR   4.0    2.68        35.0          .         7.23        2.32    
LHAS   6.9    126.       -.763e-01    73.4        4.45        2.60    
LPGS   3.9    746.       -.971e-01    56.5        4.77        3.21    
MAC1   1.0    45.8       -.105        29.0        4.00        2.27    
MADR*  6.9    11.0       -.572          .         4.77        2.73    
MAS1   7.0    .116e+04    6.02        33.5        3.87        2.67    
MCM4   7.0    77.7       -.794e-01    39.8        4.35        1.58    
MOIN   6.7    .877e+05    7.75        102.        7.60        2.40    
NOTO   1.0    .145       -11.9        33.0        5.00        3.23    
OHIG   6.4    .317e+05   -1.75        45.7        4.62        1.28    
PAMA   4.0    9.03       -.132          .         12.2        1.11    
PERT   7.0    1.95        17.2        48.0        5.78        2.61    
SANT*  6.0    .337       -2.19          .         4.35        2.90    
SEY1   5.8    .899e+07    .951e+04      .         10.9        1.74    
SHAO   7.0    78.8       -.694e-01    112.        4.37        2.53    
STJO   6.9    .501e+05   -2.84        46.2        4.16        2.46    
THU1   4.9    68.2       -.763e-01    45.8        4.62        2.41    
TID2   1.0    .153       -.185e-01    46.0        5.00        3.00    
TIDB*  7.0    8.16        .916e-01      .         5.31        2.34    
TROM*  7.0    8.75        37.3          .         4.10        1.52    
TSKB   4.0    1.69       -51.5        41.1        4.28        2.96    
VILL   1.0    363.       -1.48        88.0        5.00        2.86    
WETT*  7.0    4.58       -.258          .         6.08        2.40    
YAR1*  6.9    .852e+05    13.2          .         4.44        2.61    
YELL*  7.0    .364       -2.80        38.1        4.36        1.60    
PRN01  6.9    81.4        605.        53.9        5.62        2.46    
PRN02  6.9    80.3       -205.        53.7        4.90        2.45    
PRN04  6.9    82.3        50.9        58.2        5.75        2.19    
PRN05  6.9    81.4        6.77        55.2        5.45        2.33    
PRN06  7.0    80.9        1.90        55.0        5.32        2.55    
PRN07  6.9    82.2        710.        58.1        5.44        1.96    
PRN09  6.2    .681e+05   -16.4        57.0        5.81        2.02    
PRN12  2.9    .777        183.        44.4        5.00        1.65    
PRN14  7.0    82.4        11.5        54.6        5.44        2.47    
PRN15  6.8    2.78        238.        55.4        5.17        2.18    
PRN16  6.9    79.7       -137.        57.2        5.73        2.34    
PRN17  6.8    82.6       -96.9        53.8        5.59        2.48    
PRN18  6.9    80.8       -4.01        52.6        5.04        2.42    
PRN19  6.5    82.3        64.5        49.8        5.15        2.20    
PRN20  7.0    81.4        42.3        55.0        5.31        2.51    
PRN21  6.8    81.3       -6.36        51.9        5.17        2.42    
PRN22  6.8    82.5        259.        46.6        5.57        2.43    
PRN23  6.9    81.9        3.01        57.9        5.32        2.08    
PRN24  6.9    80.6        284.        60.3        5.59        2.28    
PRN25  6.6    79.6        .551        52.0        6.03        2.31    
PRN26  6.8    81.8       -106.        52.2        5.44        2.26    
PRN27  6.7    80.3        7.79        50.1        5.15        2.37    
PRN28  7.0    2.24        44.9        74.2        5.02        2.50    
PRN29  7.0    81.0        2.34        52.7        5.31        2.57    
PRN31  6.8    82.6        693.        52.0        5.44        2.37    
_______________________
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
      95 10 29   95 10 30   95 10 31   95 11  1   95 11  2   95 11  3   95 11  4
prn   3d rss (m)
  1       7.7        9.2        6.2        6.3        6.2        7.5        6.7 
  2       3.6        2.5        2.8        2.7        4.0        4.3        2.9 
  4       3.5        3.5        4.8        4.9        4.3        3.5        3.9 
  5       3.6        3.7        4.6        3.6        3.7        4.4        3.3 
  6       6.8        6.1        4.9        5.2        4.5        5.5        5.3 
  7       4.6        4.7        4.7        4.5        4.8        5.3        5.3 
  9       6.0        4.5        5.0        4.7        5.5        7.2        6.2 
 12       1.8        2.0        2.9                                             
 14       4.2        4.4        5.2        4.5        4.0        3.2        6.3 
 15       2.9        3.3        3.3        2.6        3.5        4.0        4.6 
 16       8.2        3.7        5.2        5.6        5.2        7.0        4.4 
 17       5.3        3.0        3.6        5.6        2.7        4.3        2.9 
 18       7.7        6.5        5.6        5.9        5.8        6.5        5.7 
 19       5.4        4.0        6.0        6.2        5.6        6.6        6.3 
 20       3.7        4.2        3.8        3.8        4.6        4.2        4.0 
 21       7.6        8.4        4.6        4.8        7.8        9.0        7.5 
 22       5.0        6.0        5.3        5.3        5.2        5.7        6.3 
 23       4.3        3.1        2.3        2.4        2.7        3.1        3.8 
 24       5.9        4.6        4.2        4.1        4.5        4.5        4.3 
 25       7.8        7.1        7.1        6.8        6.8        7.3        7.4 
 26      12.5       10.5       10.9       12.4       11.5        8.4        9.1 
 27       8.9        9.7        8.7        9.5       10.5        8.5        8.0 
 28       4.9        3.1        3.3        4.3        5.3        4.3        5.4 
 29       4.6        3.9        5.0        3.8        3.4        3.9        3.7 
 31       3.9        3.0        3.6        2.8        3.3        3.0        2.6 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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