Subject: [IGSREPORT-2091] Wk 0821 JPL Analysis Report
From: D C Jefferson
Date: Tue, 17 Oct 1995 14:45:36 PDT

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IGS Electronic Report    Tue Oct 17 14:45:36 PDT 1995      Message Number 2091
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Author: D C Jefferson
Subject: Wk 0821 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0821 (DAYS 274-280, DATES 1995 Oct 01 - Oct 07)
******************************************************************************

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/0821.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08217.sum         This text file.
jpl08217.erp         Earth rotation parameters for GPS week 821.
jpl08217.snx         Ground station coordinates for GPS week 821, SINEX format.
jpl0821[0-6].sp3     GPS ephemerides for GPS week 821, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 20.6 cm

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)
AUCK (New Zealand):               -5105691.8339    461570.4541  -3782192.8866
KELY (Kellyville, Greenland):      1575568.2433  -1941836.5508   5848072.0110

Although used in our processing, we have elected to remove results for PRN17
from the orbit solution for day 276 (jpl08212.sp3) due to possible mismodeling.

Solutions for day 281 were not available at the time of the compilation of
this report, hence the single-digit precision in the orbit repeatability table 
below.

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 AREQ, DAV1, HBRK, HKLO, METS, OHIG, UPAD, VCIO, VNDP, WETT,           WSMN excluded day 274.
WARNING: Data from AREQ, CHIL, DAV1, HERS, KIRU, MATE, OHIG, SANT, WETT                  excluded day 275.
WARNING: Data from AREQ, CHIL, GRAZ, HERS, KIRU, MAS1, OHIG excluded day 276.            NLIB (not ALGO) used as reference clock this day.
WARNING: Data from FAIR, HERS, KIRU, TMGO, TROM excluded day 277.
WARNING: Data from FAIR, SANT, TMGO excluded day 278.  YELL used as reference            clock this day.
WARNING: Data from DAV1, KELY, SEY1, TMGO excluded day 279.  NLIB used as                reference clock this day.
WARNING: Data from FAIR, HERS, MAC1, NYAL, SEY1, TMGO, TROM excluded day 280.            NLIB used as reference clock this day.

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 821 (1995 Oct 01 - Oct 07)
     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
49991.50  13590  10492  -219821  2383    5    6    13     13 34 11 25 -342 -137 
49992.50  13216  10386  -222227  2429    5    6    13     13 34 11 25 -380 -118 
49993.50  12810  10328  -224633  2382    5    5    13     13 34 11 25 -400 -107 
49994.50  12403  10215  -226999  2350    4    5    13     13 34 11 25 -362 -102 
49995.50  12042  10139  -229333  2318    5    6    13     13 34 11 25 -372  -63 
49996.50  11633  10021  -231666  2349    5    5    13     13 34 13 25 -389 -103 
49997.50  11241   9842  -234044  2407    5    5    13     13 34 11 25 -364 -107 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 821:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 821 (1995 Oct 01 - Oct 07)
      95 10  1   95 10  2   95 10  3   95 10  4   95 10  5   95 10  6   95 10  7
prn   3d rss (m)
  1       0.15       0.17       0.28       0.27       0.26       0.16       0.2 
  2       0.11       0.17       0.10       0.11       0.18       0.26       0.3 
  4       0.10       0.11       0.12       0.20       0.15       0.28       0.4 
  5       0.15       0.12       0.21       0.21       0.21       0.21       0.2 
  6       0.29       0.32       0.24       0.16       0.19       0.16       0.1 
  7       0.12       0.14       0.11       0.09       0.14       0.14       0.1 
  9       0.12       0.26       0.23       0.15       0.18       0.16       0.1 
 12       0.42       0.41       0.47       0.59       0.46       0.39       0.3 
 14       0.14       0.16       0.11       0.14       0.10       0.14       0.1 
 15       0.16       0.19       0.19       0.17       0.13       0.14       0.1 
 16       0.10       0.18       0.14       0.08       0.17       0.19       0.2 
 17       0.29       0.49       0.92       0.44       0.48       0.38       0.2 
 18       0.14       0.13       0.14       0.15       0.13       0.13       0.2 
 19       0.19       0.22       0.19       0.24       0.22       0.33       0.4 
 20       0.25       0.18       0.29       0.29       0.24       0.19       0.1 
 21       0.10       0.14       0.25       0.35       0.35       0.16       0.2 
 22       0.18       0.20       0.15       0.09       0.12       0.07       0.1 
 23       0.39       0.30       0.28       0.15       0.32       0.23       0.2 
 24       0.15       0.14       0.17       0.16       0.14       0.13       0.2 
 25       0.10       0.18       0.20       0.25       0.17       0.24       0.2 
 26       0.73       0.24       0.18       0.26       0.17       0.20       0.2 
 27       0.16       0.14       0.14       0.16       0.16       0.25       0.2 
 28       0.12       0.25       0.32       0.27       0.21       0.19       0.2 
 29       0.11       0.18       0.17       0.09       0.12       0.12       0.0 
 31       0.24       0.23       0.27       0.11       0.15       0.12       0.1 
_______________________
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 821 (1995 Oct 01 - Oct 07)
 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*  5.8    900.        2.63        48.1        4.51        2.70    
AOA1   1.0    89.0        .905e-01    68.0        6.00        2.79    
AREQ   3.9    83.1        2.84        52.3        5.00        2.43    
AUCK   4.0    70.6        2.79        39.5        5.05        3.29    
BOR1   3.7    2.10        .911        34.0        3.76        2.79    
BRAZ   5.9    149.        2.47        77.9        6.52        2.31    
BRMU   1.0    113.        .989e-01    39.0        6.00        3.06    
CAS1   5.9    18.9        .115e+04    44.2        5.17        2.02    
CAT1   3.9    .140e+04    3.64        41.5        4.27        3.01    
CICE   2.0    58.7       -.307e-01    27.5        4.00        2.76    
DAV1    .7    49.4        496.        45.0        5.00        1.15    
FAI2   1.0    313.       -1.70        60.0        5.00        1.46    
FAIR*  3.9    .778        .497          .         5.32        1.83    
FORT   1.0    134.       -.943        53.0        6.00        2.93    
GOLD*  6.7    .140        1.82          .         3.65        2.45    
GRAS    .9    82.3        .745e-01    34.0        4.00        3.04    
GUAM   6.8    92.6        2.03        56.2        7.62        2.29    
HART*  6.8    809.        4.99          .         8.29        1.83    
HKLO    .8    .289e+06    503.        50.0        5.00        .789    
HOB2   1.7    .314       -.127e-01    44.6        5.61        2.89    
KELY   2.4    .160e+06    25.6        64.0        6.00        1.18    
KERG   6.9    158.       -52.9          .         5.16        2.52    
KIRU   1.0    2.60       -.381        54.0        7.00        1.55    
KIT3   5.6    .269e+04    2.32        69.2        5.17        2.97    
KOK2   6.2    9.18        2.27        50.7        5.97        2.54    
KOKB*  6.9    .160        3.13          .         6.20        2.63    
KOSG*  6.9    2.85        5.70          .         4.47        2.26    
KOUR   6.9    2.89        29.7          .         7.32        2.09    
LHAS   6.8    .106e+04    2.05        60.6        4.60        2.48    
LMNO   1.0    .287e+06    484.        54.0        4.00        1.16    
MAC1   4.9    41.3        2.95        37.9        4.61        1.84    
MADR*  6.5    .147        3.02          .         4.59        2.35    
MAS1   5.5    8.24        2.73        46.6        4.00        2.59    
MCM4   5.9    90.5        2.48          .         4.85        1.83    
METS    .9    .401       -10.7        68.0        3.00        2.23    
MOIN   1.8    92.8        4.13        82.3        5.58        2.04    
NLIB   2.9    .           .           40.4        4.69        2.81    
NYAL   1.0    .200        1.97          .         5.00        1.34    
OHIG   2.8    .315e+05    3.08        60.1        4.82        .962    
PAMA   6.9    12.7        3.06          .         11.9        1.06    
PERT   6.9    2.01        93.0        52.9        4.60        3.12    
POTS   1.0    106.        9.26        79.0        6.00        2.40    
RCM5   3.9    .928        1.59          .         6.13        3.01    
SANT*  3.6    .432        3.06          .         4.60        2.41    
SEY1   4.6    167.        2.55        233.        8.22        2.03    
SHAO   6.9    76.5        2.12        43.9        4.46        2.51    
STJO   3.9    15.9       -136.        52.3        4.25        2.75    
THU1   3.9    68.5        .917        51.3        5.00        2.58    
TID2   2.9    .123        1.17        45.7        4.69        3.36    
TIDB*  6.7    .191        1.85          .         5.03        2.72    
TROM*  4.9    5.42        460.          .         5.22        1.33    
TSKB   2.9    2.52       -13.3        49.7        5.00        3.02    
VILL   1.0    445.       -.722e-01    74.0        5.00        2.97    
WETT*  5.0    .197        .359          .         6.61        2.24    
YAR1*  6.9    144.        .745          .         4.00        2.57    
YELL*  5.8    .282       -8.19        48.5        5.19        1.14    
PRN01  6.5    86.2        609.        52.2        5.72        2.19    
PRN02  6.8    79.4       -195.        52.7        5.46        2.23    
PRN04  6.8    81.0        48.6        61.6        5.72        1.92    
PRN05  6.8    78.8        3.56        57.8        5.15        2.04    
PRN06  6.5    80.2        2.84        53.0        5.87        2.17    
PRN07  6.6    79.3        711.        59.4        5.89        2.00    
PRN09  6.8    78.0       -9.23        61.5        5.15        2.02    
PRN12  6.5    1.05        297.        68.8        4.16        2.17    
PRN14  6.8    80.7        13.2        51.3        5.30        2.32    
PRN15  6.8    4.07        231.        57.7        5.45        2.11    
PRN16  6.8    83.2       -125.        65.9        5.87        2.19    
PRN17  6.8    80.8       -92.3        65.2        5.45        2.24    
PRN18  6.7    80.2       -1.33        52.6        5.59        2.23    
PRN19  6.8    82.0        115.        57.4        5.59        2.29    
PRN20  6.8    81.9        18.1        54.8        5.31        2.34    
PRN21  6.8    82.5       -2.79        56.4        5.15        2.18    
PRN22  6.8    83.2        254.        58.9        6.00        2.06    
PRN23  6.8    81.4        4.14        54.0        5.30        1.96    
PRN24  6.8    82.3        271.        62.8        6.00        2.18    
PRN25  6.8    81.6        2.99        59.8        6.14        2.17    
PRN26  6.5    81.8       -38.8        63.2        6.00        2.02    
PRN27  6.8    82.3        6.94        63.2        5.44        2.19    
PRN28  6.4    2.44        41.8        66.5        5.00        2.48    
PRN29  6.7    82.9        3.42        54.4        5.47        2.34    
PRN31  6.5    81.0        619.        64.3        6.00        2.00    
_______________________
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  1   95 10  2   95 10  3   95 10  4   95 10  5   95 10  6   95 10  7
prn   3d rss (m)
  1       9.1        9.7       10.4        9.1        9.1        8.0        7.9 
  2       2.6        2.5        2.5        2.6        3.4        2.8        3.1 
  4       4.1        4.6        3.6        4.5        4.8        3.9        4.2 
  5       4.9        5.0        3.8        3.4        2.9        3.1        3.4 
  6      10.3       11.3        9.7        8.8        9.0       10.0        7.3 
  7       6.6        6.8        7.3        8.1        6.9        6.4        6.8 
  9       3.1        3.0        2.9        3.5        4.1        3.3        3.2 
 12       2.7        3.2        3.9        5.1        3.4        4.1        6.0 
 14       6.8        6.8        6.8        7.9        9.0        6.5       10.7 
 15       3.1        2.8        2.3        4.6        3.7        3.6        4.2 
 16       3.7        5.2        2.9        4.1        5.0        5.2        4.8 
 17       5.0        3.4        4.5        1.8        1.9        2.1        3.6 
 18       3.1        3.7        3.5        4.6        4.5        6.4        6.8 
 19       2.9        3.1        3.3        4.1        3.7        3.8        4.2 
 20       3.8        4.3        4.3        4.4        3.6        3.8        3.5 
 21      12.7        9.8       14.3        8.5       12.7       11.3       19.5 
 22       8.5        7.0        9.2        8.5        5.8        5.2        5.1 
 23      10.6        9.5        7.9        7.9        5.9        6.7        5.1 
 24       4.9        5.6        6.2        6.5        7.0        5.4        5.7 
 25       4.9        4.8        3.8        3.4        3.8        3.7        5.6 
 26       7.6        4.1        4.4        5.2        6.3        4.3        5.3 
 27       6.7        6.1        5.8        5.4        5.5        6.2        6.7 
 28       6.9        6.1        8.1        4.5        5.5        6.9        6.1 
 29       7.2        7.7        7.3        6.9        7.3        7.3        8.6 
 31       6.2        6.9        8.4        7.0        9.8        7.3        6.2 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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