Subject: [IGSREPORT-2123] Wk 0823 JPL Analysis Report
From: D C Jefferson
Date: Tue, 31 Oct 1995 10:01:58 PST

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IGS Electronic Report    Tue Oct 31 10:01:58 PST 1995      Message Number 2123
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Author: D C Jefferson
Subject: Wk 0823 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0823 (DAYS 288-294, DATES 1995 Oct 15 - Oct 21)
******************************************************************************

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/0823.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08237.sum         This text file.
jpl08237.erp         Earth rotation parameters for GPS week 823.
jpl08237.snx         Ground station coordinates for GPS week 823, SINEX format.
jpl0823[0-6].sp3     GPS ephemerides for GPS week 823, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 16.7 cm

According to the file nanu1995.mes obtained from the IGS CBIS, PRN19 and PRN26
were unusable on days 289 and 290 respectively for maintenance (no maneuvers).
Data from these satellites were used in our analyses of these days, and clock
resets were detected at the following approximate times:

      PRN19 - clock reset day 289 at 21:10  UT
      PRN26 - clock reset day 290 at 17:10  UT

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: YELL (not ALGO) used as reference clock on day 290.
WARNING: NLIB (not ALGO) used as reference clock on days 291-293.
WARNING: Data from HART, JPLM, KELY, NYAL, TROM, ZIMM excluded day 288.
WARNING: Data from HART, HERS, KOK2, KOKB, LAMA, OHIG, UPAD excluded day 289.
WARNING: Data from CHIL, HART, JPLM, LAMA, SIO3, TROM excluded day 290.
WARNING: Data from DAV1, FAIR, GRAZ, MCM4 excluded day 292.
WARNING: Data from DAV1, FAIR, KELY, MCM4, SEY1 excluded day 293.
WARNING: Data from DAV1, KELY, MAS1 excluded day 294.

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 823 (1995 Oct 15 - Oct 21)
     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
50005.50   8272   8868  -252841  2252    5    5    11     11 34 10 25 -357  -48 
50006.50   7875   8782  -255087  2241    5    5    11     11 34 10 25 -392  -50 
50007.50   7462   8693  -257342  2268    5    5    12     12 33 11 25 -343  -77 
50008.50   7080   8595  -259607  2263    4    5    12     12 33 12 25 -405  -42 
50009.50   6757   8502  -261823  2168    4    5    12     12 34 12 25 -336  -74 
50010.50   6511   8436  -264006  2199    4    5    11     11 34 12 25 -301  -20 
50011.50   6319   8415  -266205  2199    4    4    11     11 34 13 25 -323    7 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 823:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 823 (1995 Oct 15 - Oct 21)
      95 10 15   95 10 16   95 10 17   95 10 18   95 10 19   95 10 20   95 10 21
prn   3d rss (m)
  1       0.14       0.17       0.16       0.14       0.07       0.07       0.15
  2       0.07       0.10       0.09       0.10       0.07       0.08       0.18
  4       0.12       0.15       0.15       0.15       0.18       0.19       0.22
  5       0.13       0.15       0.16       0.19       0.18       0.22       0.14
  6       0.11       0.15       0.27       0.16       0.11       0.15       0.12
  7       0.09       0.09       0.15       0.11       0.12       0.17       0.14
  9       0.15       0.11       0.17       0.20       0.22       0.20       0.17
 12       0.22       0.26       0.35       0.33       0.35       0.43       0.36
 14       0.17       0.19       0.17       0.17       0.15       0.16       0.13
 15       0.14       0.12       0.09       0.15       0.17       0.11       0.17
 16       0.24       0.19       0.16       0.14       0.06       0.13       0.12
 17       0.32       0.34       0.24       0.28       0.24       0.32       0.24
 18       0.17       0.15       0.13       0.07       0.11       0.14       0.22
 19       0.14       0.40       0.21       0.24       0.21       0.17       0.16
 20       0.18       0.19       0.18       0.13       0.13       0.23       0.24
 21       0.08       0.10       0.15       0.15       0.11       0.09       0.13
 22       0.09       0.09       0.18       0.15       0.14       0.10       0.13
 23       0.21       0.27       0.26       0.34       0.25       0.34       0.36
 24       0.12       0.22       0.12       0.08       0.19       0.17       0.19
 25       0.14       0.13       0.24       0.19       0.13       0.14       0.13
 26       0.22       0.14       0.30       0.35       0.25       0.25       0.14
 27       0.12       0.12       0.12       0.12       0.12       0.15       0.10
 28       0.14       0.12       0.11       0.13       0.08       0.10       0.16
 29       0.18       0.10       0.13       0.17       0.12       0.10       0.16
 31       0.13       0.07       0.10       0.11       0.08       0.08       0.13
_______________________
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 823 (1995 Oct 15 - Oct 21)
 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*  7.1    451.        2.17        28.3        3.74        3.11    
ANKR   2.0    69.5       -.245e-01    50.0        3.00        3.15    
AREQ   7.0    65.4        1.34        31.0        4.31        3.18    
AUCK   7.0    64.7        1.34        29.3        4.00        3.26    
BOR1   4.9    2.63        1.36        22.2        3.23        3.45    
BRMU   4.0    65.4       -.122e-01    25.8        5.36        3.23    
CAS1   7.0    17.4        .139e+04    50.0        5.00        1.87    
CICE   7.0    186.        1.35        22.3        3.00        3.09    
CRO1   1.0    97.6        .214e-01    20.0        6.00        2.80    
FAIR*  5.0    .135        1.05          .         3.44        2.46    
FORT   1.0    .116       -.152        29.0        6.00        3.63    
GOLD*  7.0    .122        .819          .         3.00        3.97    
GRAS   1.0    67.1        .258e-01    17.0        3.00        3.31    
GUAM   7.0    76.1        1.34        31.1        7.48        3.26    
HART*  4.0    43.3        8.01          .         4.28        3.40    
HOB2   7.0    .685        3.02        44.2        5.08        2.99    
IRKT   5.9    81.6        1.58        48.1        4.36        3.38    
KERG   6.9    145.       -116.          .         4.87        2.77    
KIRU   1.0    2.29       -.456        29.0        7.00        2.09    
KIT3   3.9    116.        2.40        75.6        4.52        3.44    
KOK2   5.0    25.1        2.27        27.8        5.81        3.33    
KOKB*  5.0    25.1        2.36          .         5.02        3.68    
KOSG*  7.0    1.52        2.81          .         3.31        2.84    
KOUR   6.0    3.67        33.0          .         5.72        2.79    
LHAS   5.8    107.        1.61        60.5        4.00        2.71    
MADR*  6.9    372.        3.35          .         4.00        3.15    
MAS1   4.9    .114e+07    9.14        22.3        2.74        2.73    
MCM4   3.0    76.2        3.11          .         3.37        1.73    
MOIN   6.0    68.8        1.11        69.1        6.13        2.75    
NLIB   2.9    .           .           28.4        4.00        2.99    
NYAL   3.0    .581        2.91          .         3.00        1.63    
OHIG   4.4    .528e+05   -2.80        37.4        3.78        1.13    
PAMA   7.0    11.2        1.52          .         9.73        2.75    
PERT   7.0    2.10        91.6        35.6        4.86        3.73    
SANT*  7.0    .149        1.46          .         3.60        2.94    
SEY1    .9    .622e+05   -985.          .         12.0        2.55    
SHAO   7.0    68.0        1.34        28.5        3.46        3.29    
STJO   6.0    13.7       -.798        40.8        4.04        3.33    
THU1   5.0    62.2       -.749e-03    40.6        4.00        2.14    
TIDB*  7.0    .292        1.32          .         4.47        3.29    
TROM*  2.5    2.80        7.67          .         3.44        1.95    
TSKB   3.0    2.30       -34.6        33.2        4.36        3.57    
VILL   1.0    4.09       -5.11        46.0        4.00        3.42    
WETT*  7.0    .170       -.664          .         4.00        3.63    
YAR1*  6.9    .240e+06    18.0          .         4.31        3.31    
YELL*  7.0    .201       -9.36        24.5        3.17        1.77    
ZWEN   1.0    99.2       -.741e-01    32.0        4.00        2.83    
PRN01  7.0    81.3        609.        39.1        4.87        2.98    
PRN02  7.0    79.9       -199.        40.2        4.73        3.15    
PRN04  7.0    79.0        50.1        39.0        5.00        2.68    
PRN05  7.0    79.5        5.49        37.1        4.61        2.68    
PRN06  6.8    83.1        2.67        38.1        4.89        2.74    
PRN07  7.0    79.7        711.        38.2        4.74        2.66    
PRN09  7.0    80.9       -11.4        43.7        4.46        2.66    
PRN12  6.9    70.3        237.        45.8        4.00        2.37    
PRN14  7.0    81.5        12.6        34.6        5.00        2.90    
PRN15  7.0    3.39        235.        40.7        4.60        2.69    
PRN16  7.0    80.4       -130.        39.3        4.86        2.91    
PRN17  6.9    78.8       -94.2        43.9        4.31        2.94    
PRN18  7.0    80.0       -2.36        36.6        4.61        2.86    
PRN19  6.8    .503e+04    27.1        36.9        4.58        3.01    
PRN20  7.0    82.8        31.3        42.0        4.31        2.90    
PRN21  7.0    78.5       -4.18        40.6        4.61        2.87    
PRN22  7.0    80.6        257.        35.9        4.60        2.80    
PRN23  7.0    81.6        3.93        46.3        4.31        2.42    
PRN24  7.0    79.5        281.        36.8        4.87        2.75    
PRN25  7.0    82.1        2.10        36.9        4.87        3.03    
PRN26  6.6    .472e+04   -76.0        39.4        4.95        2.72    
PRN27  7.0    80.5        7.75        37.3        4.75        2.98    
PRN28  6.9    2.30        43.7        42.3        5.00        2.66    
PRN29  7.0    80.3        3.24        38.2        5.00        2.93    
PRN31  7.0    82.6        658.        40.0        5.00        2.91    
_______________________
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 15   95 10 16   95 10 17   95 10 18   95 10 19   95 10 20   95 10 21
prn   3d rss (m)
  1       8.6        8.6        7.5        9.1        7.4        6.8        6.1 
  2       2.8        3.0        2.9        2.5        2.9        2.7        3.4 
  4       3.0        3.2        3.2        3.4        3.4        3.3        3.3 
  5       4.8        3.6        3.4        3.7        3.8        3.1        3.2 
  6       9.5       10.9       10.7       10.3        8.7        7.7        8.0 
  7       7.7        6.8        5.7        5.8        4.9        4.9        4.7 
  9       4.7        3.9        4.0        3.7        3.7        4.2        4.6 
 12       4.6        2.4        2.5        4.0        2.7        4.4        4.2 
 14       5.4        4.4        5.2        8.1        6.8        7.7        6.9 
 15       2.9        2.3        2.6        2.4        3.1        3.2        3.0 
 16       8.4        4.0        3.9        4.2        3.7       15.3       17.0 
 17       2.5        2.2        2.2        2.1        3.7        2.3        3.6 
 18       7.3        6.1        7.1        7.9        9.8        7.2        6.6 
 19       4.3        4.0        4.4        3.9        4.1        4.0        4.4 
 20       4.3        4.4        4.3        3.6        4.0        4.2        3.9 
 21      10.0       12.0        9.9        4.9        5.9        8.4       10.5 
 22       9.0        8.6        5.8        6.2        7.1        7.1        6.7 
 23       3.0        3.1        3.1        2.8        2.8        2.6        2.4 
 24       4.4        4.9        4.9        4.7        5.1        4.3        4.6 
 25       6.7        5.0        6.1        5.6        6.3        6.0        5.5 
 26      14.9        3.2        4.8       12.7        2.4        3.4        4.9 
 27       7.6        8.2        7.3        8.3        8.3        9.4        8.7 
 28       5.2        5.3        4.9        4.9        3.9        3.7        5.0 
 29       5.0        4.8        5.3        4.4        5.0        4.5        5.2 
 31       3.6        3.1        3.2        3.3        3.3        3.6        3.8 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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