Subject: [IGSREPORT-2074] Wk 0820 JPL Analysis Report
From: D C Jefferson
Date: Mon, 9 Oct 1995 14:26:31 PDT

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IGS Electronic Report    Mon Oct  9 14:26:31 PDT 1995      Message Number 2074
******************************************************************************

Author: D C Jefferson
Subject: Wk 0820 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0820 (DAYS 267-273, DATES 1995 Sep 24 - Sep 30)
******************************************************************************

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/0820.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08207.sum         This text file.
jpl08207.erp         Earth rotation parameters for GPS week 820.
jpl08207.snx         Ground station coordinates for GPS week 820, SINEX format.
jpl0820[0-6].sp3     GPS ephemerides for GPS week 820, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 20.8 cm

PRODUCTS UPDATE

We are pleased to announce the availability of JPL's weekly station coordinate
solutions in SINEX format.  Solutions have been submitted since GPS week 813.
Please note that these are loosely constrained free-network solutions.  The new
files can be obtained in the same manner as our sp3 orbit products as mentioned
above.  Comparisons of SINEX files submitted by Analysis Centers can be found
in a separate report.

GENERAL

According to the file nanu1995.mes obtained from the IGS CBIS, PRN28 was
unusable on day 270 for maintenance/repositioning.  Data from this satellite
did not meet our initial convergence criteria on this and the following day,
and have been excluded from our analyses accordingly.

Beginning this week, we include data from several 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)
ANKR (Ankara, Turkey):             4121949.7200   2652189.4686   4069024.5985
COSO (China Lake, CA USA):        -2411191.9800  -4571453.5100   3727489.5700
GOPE (Ondrejov, Czech Republic):   3979326.3751   1050321.5602   4857060.4141

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 AOA1, DAV1, HART, KERG, SEY1, VCIO, WSMN excluded day 267.            NLIB used as reference clock on this day only.
WARNING: Data from AOA1, DAV1, HART, LAMA, NYAL, PAMA, SEY1, WETT, WINT
         excluded day 268.  YELL used as reference clock on this day only.
WARNING: Data from PRN28 excluded days 270 and 271 due to a manuever.
WARNING: Data from COSO, DAV1, HBRK, MCM4, METS, TROM, VNDP, WETT excluded day
         273.

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 820 (1995 Sep 24 - Sep 30)
     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
49984.50  15648  11289  -203360  2334    5    6    14     14 33 12 25 -311 -148 
49985.50  15363  11150  -205714  2375    5    5    14     14 33 11 25 -326  -82 
49986.50  15096  11028  -208084  2365    5    5    14     14 34 13 25 -334 -167 
49987.50  14794  10913  -210444  2355    5    6    14     14 34 13 24 -301 -147 
49988.50  14529  10835  -212785  2327    5    5    14     14 34 13 24 -316 -158 
49989.50  14252  10715  -215130  2363    4    6    14     14 34 12 25 -315 -130 
49990.50  13968  10621  -217471  2318    4    6    13     13 34 10 25 -347  -88 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 820:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 820 (1995 Sep 24 - Sep 30)
      95  9 24   95  9 25   95  9 26   95  9 27   95  9 28   95  9 29   95  9 30
prn   3d rss (m)
  1       0.07       0.22       0.17       0.12       0.20       0.15       0.17
  2       0.20       0.13       0.06       0.15       0.11       0.16       0.08
  4       0.11       0.11       0.16       0.22       0.16       0.15       0.18
  5       0.14       0.13       0.17       0.14       0.21       0.18       0.20
  6       0.21       0.17       0.23       0.23       0.13       0.17       0.18
  7       0.23       0.18       0.17       0.21       0.15       0.19       0.13
  9       0.19       0.17       0.19       0.12       0.24       0.19       0.13
 12       0.58       0.38       0.42       0.48       0.42       0.38       0.28
 14       0.11       0.16       0.10       0.17       0.15       0.18       0.13
 15       0.18       0.16       0.19       0.21       0.09       0.14       0.15
 16       0.13       0.20       0.21       0.10       0.20       0.30       0.26
 17       0.26       0.32       0.22       0.26       0.33       0.27       0.20
 18       0.15       0.14       0.14       0.06       0.12       0.11       0.10
 19       0.37       0.17       0.30       0.27       0.34       0.30       0.17
 20       0.27       0.26       0.22       0.14       0.15       0.26       0.35
 21       0.14       0.15       0.19       0.16       0.25       0.20       0.16
 22       0.17       0.30       0.25       0.23       0.20       0.28       0.17
 23       0.46       0.34       0.54       0.33       0.46       0.42       0.47
 24       0.28       0.46       0.45       0.27       0.31       0.16       0.27
 25       0.13       0.11       0.12       0.14       0.18       0.19       0.13
 26       0.26       0.29       0.26       0.22       0.17       0.32       0.28
 27       0.17       0.09       0.10       0.17       0.14       0.11       0.20
 28       0.12       0.11       0.2                              0.2        0.19
 29       0.15       0.19       0.23       0.17       0.08       0.14       0.10
 31       0.18       0.20       0.43       0.21       0.13       0.18       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 820 (1995 Sep 24 - Sep 30)
 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    .308        3.25        47.9        4.00        2.60    
AREQ   7.0    81.8        2.62        48.9        5.02        2.39    
BOGT   4.9    132.        3.02          .         6.39        2.18    
BOR1   4.0    2.81        2.61        33.3        3.78        3.10    
BRAZ   5.9    131.        2.77        76.8        5.68        2.23    
BRMU   1.0    97.2        1.78        40.0        8.00        2.99    
CAS1   6.9    17.6        .102e+04    41.6        5.03        1.95    
CAT1   7.0    245.        2.62        38.8        4.76        2.94    
FAIR*  6.3    135.        2.21          .         4.50        1.88    
FORT    .8    .139        .816        52.0        6.00        3.34    
GOLD*  7.0    .165        2.72          .         4.90        2.41    
GRAS   1.8    76.5        1.79        35.7        3.99        2.60    
GUAM   7.0    91.2        2.61        56.4        8.44        2.29    
HART*  4.9    54.0        8.48          .         8.21        1.69    
HKLO   2.0    .289e+06    509.        51.5        4.54        .756    
KERG   6.0    176.       -25.4          .         6.02        2.38    
KIT3   4.9    .399e+04    2.72        64.7        5.00        2.92    
KOK2   5.7    170.        3.96        47.0        6.61        2.38    
KOKB*  7.0    .190        3.40          .         7.08        2.65    
KOSG*  7.0    1.67        5.32          .         4.46        2.18    
KOUR   6.0    3.39        28.3          .         7.70        2.04    
LHAS   2.9    827.        1.89        66.0        4.37        2.55    
MAC1   6.9    39.7        2.59        36.4        4.44        2.12    
MADR*  7.0    .840        3.83          .         4.46        2.43    
MAS1   7.0    .972e+05    63.6        47.6        4.31        2.59    
MCM4   3.0    79.7        3.74          .         4.69        1.98    
METS   1.0    .516       -7.80        37.0        4.00        1.75    
MOIN   1.9    109.        1.79        73.8        5.55        1.98    
NLIB    .9    .           .           38.0        4.00        2.83    
OHIG   2.6    .120e+05    1.74        54.6        4.67        1.25    
PAMA   5.9    12.1        2.59          .         11.8        1.01    
PERT   7.0    10.1        93.9        51.0        4.16        3.25    
RCM5   4.9    .847        3.17          .         7.27        3.04    
SANT*  3.7    .229       -.215          .         4.93        2.34    
SEY1   5.0    834.        1.71        196.        8.79        2.05    
SHAO   7.0    79.3        2.62        43.2        4.61        2.55    
STJO   3.9    20.3       -137.        52.5        4.53        2.79    
THU1   7.0    69.4        2.62        50.0        4.74        2.55    
TID2   7.0    74.9        2.63        44.8        4.16        3.17    
TIDB*  6.8    103.        2.96          .         4.17        2.62    
TROM*  6.0    4.95        401.          .         4.52        1.56    
TSKB   2.0    2.59       -3.65        49.5        5.00        3.05    
WETT*  5.0    .221       -.385          .         7.23        2.27    
YAR1*  6.8    2.07        .837          .         4.33        2.68    
YELL*  6.9    .258       -7.77        51.4        4.45        1.39    
ZWEN   1.9    331.        1.73        59.5        4.50        2.39    
PRN01  6.6    81.8        588.        55.4        6.18        2.27    
PRN02  6.9    80.5       -193.        52.6        5.00        2.33    
PRN04  7.0    80.3        48.1        63.0        6.00        1.96    
PRN05  6.7    .785e+04    37.0        59.3        5.36        2.32    
PRN06  6.6    78.7        3.13        56.0        6.02        2.33    
PRN07  6.7    79.2        712.        61.6        5.87        2.06    
PRN09  6.9    81.8       -7.87        62.3        5.30        2.16    
PRN12  6.6    1.28        328.        61.5        4.61        2.16    
PRN14  7.0    83.9        13.7        50.3        5.31        2.36    
PRN15  7.0    3.20        230.        56.2        5.15        2.13    
PRN16  6.9    78.5       -121.        71.8        6.02        2.08    
PRN17  6.9    80.9       -91.0        64.9        5.74        2.28    
PRN18  6.7    81.4       -.584        53.4        5.29        2.36    
PRN19  7.0    80.0        143.        59.4        5.62        2.37    
PRN20  7.0    80.2        11.1        60.3        5.00        2.48    
PRN21  6.9    80.9       -1.78        54.8        5.30        2.29    
PRN22  6.9    81.5        253.        64.2        5.74        2.11    
PRN23  6.9    80.5        4.51        57.1        5.59        1.98    
PRN24  6.8    81.6        264.        66.2        5.92        2.15    
PRN25  7.0    79.8        3.66        59.5        6.02        2.38    
PRN26  6.3    80.9       -35.0        65.9        6.17        2.04    
PRN27  7.0    81.1        6.72        63.2        5.59        2.19    
PRN28  4.6    2.09        41.4        68.1        5.00        2.48    
PRN29  6.7    79.4        3.71        57.6        5.73        2.21    
PRN31  6.7    82.1        598.        67.6        6.00        2.11    
_______________________
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  9 24   95  9 25   95  9 26   95  9 27   95  9 28   95  9 29   95  9 30
prn   3d rss (m)
  1       7.0        6.2        7.6        7.4        8.8       10.8       10.0 
  2       3.0        3.2        3.0        3.8        4.0        2.5        3.1 
  4       4.4        5.1        4.0        4.2        4.8        5.2        4.3 
  5       3.7        4.2        3.1        3.4        4.5        5.0        4.5 
  6       7.3        6.7        7.1        9.2       12.2       14.3       12.8 
  7       7.6        7.9        8.5        8.1        7.5        8.1        6.2 
  9       2.7        3.5        3.4        2.9        3.0        3.1        3.3 
 12       3.36       3.1        5.3        3.9        4.1        4.2        4.3 
 14       7.4        7.7        6.0        7.9        9.1        9.9        9.3 
 15       5.3        3.8        6.5        8.1        6.8        4.0        2.5 
 16       5.6        5.4        7.0        7.3        5.1        6.6        4.0 
 17       4.1        3.2        2.7        3.2        5.5        7.9        7.2 
 18       8.9       11.1        9.1        9.2        8.9       13.8       16.1 
 19       2.9        2.8        3.8        4.3        3.9        3.1        3.3 
 20       2.9        3.3        3.8        3.6        5.1        6.4        4.7 
 21      11.3        9.6       15.2        7.0       11.6       12.7        8.6 
 22       6.2        4.2        5.5        7.6       11.8       15.8       11.8 
 23       7.2        8.7        7.6        8.8       12.8       12.1       11.9 
 24       4.7        4.8        5.3        5.9        6.6        5.5        5.9 
 25       4.2        4.0        4.9        4.2        4.9        6.4        6.1 
 26       4.7        4.9        3.1        4.8        5.1        6.1        8.2 
 27       4.9        5.7        5.8        6.3        6.4        6.5        7.5 
 28       4.9        4.0        5.6                             10.7        3.3 
 29       6.7        7.3        6.8        7.3        7.4        7.3        7.7 
 31       5.2        6.6        8.2       10.9        9.1        7.3        8.2 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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