Subject: [IGSREPORT-2135] Wk 0824 JPL Analysis Report
From: D C Jefferson
Date: Mon, 6 Nov 1995 11:24:46 PST

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IGS Electronic Report    Mon Nov  6 11:24:46 PST 1995      Message Number 2135
******************************************************************************

Author: D C Jefferson
Subject: Wk 0824 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0824 (DAYS 295-301, DATES 1995 Oct 22 - Oct 28)
******************************************************************************

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/0824.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08247.sum         This text file.
jpl08247.erp         Earth rotation parameters for GPS week 824.
jpl08247.snx         Ground station coordinates for GPS week 824, SINEX format.
jpl0824[0-6].sp3     GPS ephemerides for GPS week 824, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 18.9 cm

Beginning this week, we include data from a new site, TABL (Table Mountain
Observatory, CA USA).  As with most stations, this site is 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)
               -968332.9300   3794424.1200   5018164.8100

As mentioned in some of our previous IGS reports, we have been excluding
pseudorange data from several sites based on atypically high postfit residuals
from these stations.  In keeping with this practice, we now exclude P-code
data from LONG (Longdon yard, CA USA) and the aforementioned new site TABL.
Simultaneously, this week we also reinstate P-code from the following ground
sites which have had an apparent improvement in receiver performance: BOGT,
CASA, LAMA, MCM4, and RCM5.

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 DAV1, KELY, MAS1 excluded day 295.
WARNING: Data from DAV1, FAIR, LAMA, SEY1 excluded day 296.
WARNING: NLIB (not ALGO) used as reference clock on day 296.
WARNING: PIE1 (not ALGO) used as reference clock on days 297 and 298.
WARNING: Data from IISC, LAMA excluded day 297.
WARNING: Data from AREQ, IISC, LAMA, MCM4 excluded day 298.
WARNING: Data from AREQ, BRAZ, IISC, LAMA, MCM4, MOIN excluded day 299.
WARNING: Data from AREQ, IISC, MCM4 excluded day 300.
WARNING: Data from HOLC, IISC, KELY excluded day 301.

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 824 (1995 Oct 22 - Oct 28)
     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
50012.50   6043   8423  -268399  2189    4    4    11     11 34 13 25 -362   41 
50013.50   5695   8410  -270576  2164    4    5    11     11 34 12 25 -393    8 
50014.50   5311   8369  -272769  2222    4    4    11     11 34 12 25 -407    5 
50015.50   4885   8296  -275009  2258    4    5    11     11 34 13 25 -432   -9 
50016.50   4432   8240  -277275  2275    4    5    11     11 34 13 25 -410  -49 
50017.50   4014   8151  -279558  2291    4    4    11     11 34 13 25 -424  -32 
50018.50   3626   8078  -281864  2320    4    4    11     11 34 13 25 -393   16 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 824:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 824 (1995 Oct 22 - Oct 28)
      95 10 22   95 10 23   95 10 24   95 10 25   95 10 26   95 10 27   95 10 28
prn   3d rss (m)
  1       0.19       0.17       0.20       0.15       0.15       0.11       0.19
  2       0.26       0.21       0.22       0.23       0.21       0.15       0.13
  4       0.20       0.14       0.14       0.15       0.14       0.17       0.20
  5       0.16       0.21       0.12       0.16       0.13       0.10       0.13
  6       0.12       0.13       0.17       0.13       0.12       0.21       0.13
  7       0.18       0.11       0.10       0.14       0.16       0.14       0.12
  9       0.19       0.28       0.27       0.25       0.25       0.22       0.21
 12       0.34       0.33       0.39       0.49       0.40       0.29       0.36
 14       0.16       0.18       0.16       0.12       0.09       0.11       0.18
 15       0.28       0.27       0.26       0.22       0.13       0.16       0.21
 16       0.10       0.09       0.08       0.10       0.14       0.12       0.11
 17       0.21       0.16       0.16       0.19       0.20       0.20       0.13
 18       0.18       0.14       0.13       0.10       0.11       0.15       0.20
 19       0.17       0.25       0.27       0.28       0.19       0.27       0.32
 20       0.23       0.24       0.16       0.20       0.23       0.20       0.22
 21       0.28       0.22       0.17       0.19       0.24       0.32       0.32
 22       0.14       0.10       0.20       0.14       0.13       0.17       0.11
 23       0.39       0.31       0.33       0.42       0.22       0.41       0.14
 24       0.14       0.23       0.17       0.21       0.12       0.15       0.10
 25       0.18       0.17       0.19       0.14       0.18       0.13       0.22
 26       0.17       0.28       0.35       0.35       0.27       0.25       0.20
 27       0.11       0.10       0.10       0.15       0.15       0.19       0.22
 28       0.10       0.07       0.14       0.16       0.14       0.17       0.20
 29       0.12       0.17       0.19       0.14       0.15       0.14       0.17
 31       0.15       0.10       0.15       0.16       0.25       0.17       0.16
_______________________
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 824 (1995 Oct 22 - Oct 28)
 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    .849e-01    .419        29.3        3.31        3.34    
AREQ   4.0    66.2        .103        31.1        4.00        3.33    
AUCK   6.0    62.5        .146        30.0        3.85        3.27    
BOR1   6.0    194.       -.649        22.8        3.00        3.45    
CAS1   5.8    13.1        .151e+04    52.8        4.69        1.97    
CHAT   1.0    71.1       -.536e-01    81.0        4.00        2.95    
CICE   7.0    173.        .129        22.7        3.32        3.14    
CRO1   7.0    103.        .110        21.7        6.12        2.98    
FAIR*  5.9    346.       -.185          .         3.83        2.81    
FORT   4.9    .142       -.763e-01    28.8        5.20        2.99    
GOLD*  5.2    .224        5.37          .         3.17        3.47    
GUAM   7.0    74.6        .121        30.6        8.84        3.21    
HART*  7.0    48.3        10.8          .         4.60        3.20    
HOB2   1.9    .188        2.25        39.9        4.49        3.22    
IRKT   6.9    .124e+06    3.26        47.3        4.16        3.25    
KERG   7.0    141.       -148.          .         4.73        2.89    
KIRU   1.0    5.47       -.525        33.0        9.00        2.45    
KIT3   6.9    .209e+04   -.208e-01    84.3        4.46        3.51    
KOK2   7.0    .154        .991        28.9        5.73        3.38    
KOKB*  7.0    .951e-01    1.09          .         5.16        3.72    
KOSG*  6.9    .132e+05    6.30          .         3.18        2.83    
KOUR   1.0    3.72        33.7          .         5.00        3.05    
LHAS   6.9    79.4        .127        65.6        4.46        3.09    
MAC1   3.9    45.3        .168        21.5        3.00        2.32    
MADR*  6.9    .278e+05   -4.68          .         4.16        3.21    
MAS1   4.9    18.1        7.49        22.7        3.41        2.91    
MCM4   3.9    70.5        .106        32.3        3.29        1.65    
MOIN   1.7    57.5        .171        104.        6.00        2.76    
NLIB   1.0    .           .           29.0        5.00        3.11    
OHIG   6.1    .191e+07    136.        36.5        4.57        1.24    
PAMA   1.9    13.1       -.217          .         10.5        2.82    
PERT   6.3    .658e+04    65.4        32.2        3.80        3.33    
PIE1   2.0    .           .           25.0        4.00        3.54    
RCM5   1.0    .855        .331        23.0        6.00        3.60    
SANT*  7.0    .116        .335          .         3.89        3.49    
SEY1   5.9    .825e+07    .446e+04      .         11.9        1.90    
SHAO   7.0    70.3        .119        28.9        3.87        3.29    
STJO   3.0    10.2       -.872        42.0        3.70        3.31    
THU1   7.0    64.4        .122        42.9        4.00        2.56    
TID2   1.0    .104       -.917e-01    28.0        4.00        3.16    
TIDB*  7.0    .136        .177          .         5.06        3.29    
TROM*  6.1    .514e+04    32.7          .         3.74        1.72    
TSKB   1.0    25.5       -48.2        38.0        4.00        3.76    
VILL   1.0    1.68       -1.03        43.0        4.00        3.63    
WETT*  7.0    165.       -.612          .         3.91        3.27    
YAR1*  7.0    36.7        .395          .         3.46        3.38    
YELL*  6.9    607.       -4.58        25.5        3.00        1.84    
PRN01  7.0    80.4        607.        45.1        4.60        2.94    
PRN02  7.0    80.0       -202.        37.0        4.45        3.03    
PRN04  7.0    80.7        49.9        38.4        5.16        2.69    
PRN05  7.0    79.1        5.63        37.1        4.46        2.85    
PRN06  7.0    82.0        1.77        40.2        4.75        2.87    
PRN07  7.0    80.0        710.        36.7        5.02        2.70    
PRN09  6.9    83.3       -13.3        47.4        5.00        2.56    
PRN12  7.0    1.02        205.        44.7        4.48        2.38    
PRN14  7.0    80.4        11.5        37.7        4.73        2.94    
PRN15  7.0    3.48        236.        44.7        4.73        2.76    
PRN16  7.0    80.3       -134.        38.5        5.16        2.82    
PRN17  7.0    84.1       -96.0        46.6        5.15        2.84    
PRN18  7.0    82.2       -3.71        37.6        4.61        2.76    
PRN19  6.9    81.3        35.1        36.3        5.15        2.97    
PRN20  7.0    81.1        36.5        46.8        4.46        2.90    
PRN21  7.0    80.1       -5.80        45.8        4.60        2.71    
PRN22  7.0    81.4        258.        36.1        4.87        2.95    
PRN23  7.0    80.7        2.97        50.4        4.61        2.48    
PRN24  7.0    82.9        283.        37.1        5.00        2.82    
PRN25  6.9    79.7        .829        39.6        5.00        2.89    
PRN26  7.0    80.6       -103.        39.8        5.60        2.74    
PRN27  6.9    80.5        7.29        34.0        5.14        2.90    
PRN28  7.0    2.77        43.8        45.9        5.04        2.66    
PRN29  7.0    80.4        2.28        38.9        4.87        3.08    
PRN31  6.9    81.8        676.        43.8        5.18        2.88    
_______________________
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 22   95 10 23   95 10 24   95 10 25   95 10 26   95 10 27   95 10 28
prn   3d rss (m)
  1       6.9        7.7       12.6        9.2        8.9        7.8        7.8 
  2       2.9        3.2        3.6        2.4        3.7        4.1        3.6 
  4       3.4        3.4        3.7        3.2        3.5        3.3        3.4 
  5       3.2        3.5        3.0        3.7        3.3        3.6        3.3 
  6       7.6        6.6        6.4        6.2        6.0        5.4        6.1 
  7       5.1        4.7        4.5        4.1        4.6        5.1        6.0 
  9       4.3        4.9        6.3        8.0        8.8        6.1        5.9 
 12       2.2        3.3        2.54       3.4        3.0        2.0        2.5 
 14       6.8        5.9        2.7        5.5        8.4       10.8        6.4 
 15       4.1        2.8        2.6        2.8        4.1        3.7        3.2 
 16       7.7        3.0       10.0       10.6        3.1        3.2        7.6 
 17       2.2        2.7        2.5        3.2        3.2        2.7        3.1 
 18       7.1        7.8        7.0        7.1        5.9        6.9        7.9 
 19       4.7        4.2        7.9        8.4        6.4        5.7        4.6 
 20       4.1        4.7        4.8        4.3        4.9        4.4        3.9 
 21       9.7        7.7       13.2        7.2       13.5        9.4        4.8 
 22       6.2        5.8        5.9        7.3       10.5        9.3        7.9 
 23       2.6        2.4        3.4        4.5        4.8        3.3        3.3 
 24       4.5        5.0        3.6        3.9        4.0        4.3        4.8 
 25       6.2        5.4        5.2        6.2        5.0        5.8        6.4 
 26       5.5        9.3        5.2        7.1        7.1        8.1        9.1 
 27       7.9        8.1       11.2       11.6        9.5        9.1        8.3 
 28       4.5        3.9        4.8        6.3        5.3        4.8        4.2 
 29       4.3        4.1        4.4        3.9        3.5        4.1        4.4 
 31       3.6        3.4        4.7        4.5        5.3        4.6        3.9 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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