Subject: [IGSREPORT-2360] Wk 0836 JPL Analysis Report
From: D C Jefferson
Date: Fri, 26 Jan 1996 12:21:17 PST

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IGS Electronic Report    Fri Jan 26 12:21:17 PST 1996      Message Number 2360
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Author: D C Jefferson
Subject: Wk 0836 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0836 (DAYS 14-20, DATES 1996 Jan 14 - Jan 20)
******************************************************************************

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/0836.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08367.sum         This text file.
jpl08367.erp         Earth rotation parameters for GPS week 836.
jpl08367.snx         Ground station coordinates for GPS week 836, SINEX format.
jpl0836[0-6].sp3     GPS ephemerides for GPS week 836, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 19.8 cm

According to the file nanu1996.mes obtained from the IGS CBIS, PRN20 was
unusable from days 015 to 017 for maintenance (no maneuver).  Data from this
satellite were used in our analyses of these days, and a clock reset was
detected at the following approximate time:

      PRN20 - clock reset day 016 at 01:35  UT

Satellite PRN12 is not well modeled on days 019 and 020.  Its data did not
meet our initial convergence criteria on these days, and were excluded from
the analyses accordingly.

Beginning this week, we include data from MALI (Malindi, Kenya).  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)
                4865366.0000   4110740.0000  -331122.0000

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 CHIL, FAIR, KOKB, LONG, MATE, MDVO, VCIO excluded day 014.
WARNING: Data from CHIL, FAIR, HART, KOKB, MATE, MCM4 excluded day 015.
WARNING: Data from HART, KOKB, NYAL, TROM excluded day 016.
WARNING: Data from CHIL, HART, MATE excluded day 017.
WARNING: Data from CHIL, HBRK excluded day 018.
WARNING: Data from PRN12, HOLP, LAMA, MDVO, PERT, TROM excluded day 019.
WARNING: Data from PRN12, HOLP, MATE, MDVO, PERT, TSKB excluded day 020.

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 836 (1996 Jan 14 - Jan 20)
     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
50096.50 -19813  23030   531602  1838    6    6    12     12 37 11 25 -156  317 
50097.50 -19989  23316   529766  1834    6    6    12     12 37 10 25 -146  285 
50098.50 -20079  23582   527922  1854    5    6    11     11 37 10 25 -144  306 
50099.50 -20218  23859   526089  1812    5    5    11     11 37 11 25 -132  298 
50100.50 -20338  24192   524312  1741    4    5    11     11 37 11 25 -131  336 
50101.50 -20486  24566   522577  1730    5    5    12     12 37 12 24 -162  369 
50102.50 -20642  24999   520858  1707    5    5    12     12 37 13 24 -149  331 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 836:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 836 (1996 Jan 14 - Jan 20)
      96  1 14   96  1 15   96  1 16   96  1 17   96  1 18   96  1 19   96  1 20
prn   3d rss (m)
  1       0.57       0.19       0.16       0.20       0.19       0.24       0.12
  2       0.19       0.21       0.28       0.26       0.19       0.11       0.13
  4       0.16       0.22       0.26       0.19       0.26       0.24       0.12
  5       0.18       0.17       0.20       0.16       0.13       0.11       0.21
  6       0.14       0.18       0.14       0.16       0.17       0.14       0.21
  7       0.15       0.26       0.16       0.11       0.12       0.10       0.10
  9       0.11       0.12       0.14       0.08       0.07       0.19       0.13
 12       0.29       0.21       0.25       0.13       0.1                       
 14       0.16       0.19       0.25       0.21       0.13       0.17       0.19
 15       0.14       0.20       0.20       0.23       0.28       0.25       0.22
 16       0.12       0.16       0.28       0.22       0.19       0.27       0.24
 17       0.23       0.22       0.23       0.21       0.15       0.18       0.19
 18       0.26       0.17       0.16       0.13       0.12       0.20       0.16
 19       0.20       0.19       0.17       0.20       0.19       0.17       0.13
 20       0.32       0.18       0.23       0.20       0.18       0.20       0.30
 21       0.33       0.15       0.16       0.12       0.14       0.22       0.19
 22       0.41       0.14       0.27       0.15       0.25       0.25       0.36
 23       0.17       0.22       0.26       0.11       0.21       0.29       0.22
 24       0.20       0.31       0.31       0.25       0.36       0.47       0.24
 25       0.27       0.21       0.20       0.17       0.23       0.23       0.09
 26       0.27       0.26       0.23       0.16       0.26       0.25       0.21
 27       0.12       0.12       0.16       0.14       0.16       0.12       0.06
 28       0.21       0.19       0.25       0.24       0.22       0.14       0.15
 29       0.14       0.17       0.15       0.14       0.20       0.16       0.17
 31       0.20       0.19       0.27       0.26       0.35       0.28       0.18
_______________________
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 836 (1996 Jan 14 - Jan 20)
 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)
 |     |      |           |           |           |           |
 |___  |__    |_______    |_______    |___        |___        |__
ALBH   5.0    2.61        51.6        38.2        3.64        2.42    
ALGO*  7.0    .           .           39.7        4.06        2.96    
ANKR   4.0    .151e+04   -.494        58.1        4.20        2.40    
AREQ   7.0    88.7       -.230        46.6        5.15        2.57    
AUCK   1.0    82.8       -.261        38.0        5.00        2.91    
BOR1   1.0    3.02       -1.19        39.0        3.00        3.27    
BRUS   7.0    .465        1.58        61.5        3.91        2.69    
CHAT   6.9    103.       -.231        84.2        5.62        2.78    
CRO1   7.0    138.       -.229        42.4        6.95        2.12    
FAI2   7.0    12.8       -.204        48.0        4.45        2.08    
FAIR*  5.0    61.1       -.261          .         4.21        1.95    
GODE   1.0    .775e+04    31.8        39.0        4.00        2.62    
GOL2   7.0    .261       -.457        49.9        4.45        3.05    
GOLD*  7.0    .278       -.387          .         3.31        2.27    
GUAM   7.0    97.0       -.235        46.4        7.66        2.60    
HART*  4.0    20.0       -9.52          .         8.00        1.69    
HARV   4.8    .858e+07    .144e+05    69.8        5.42        2.61    
IISC   6.9    163.       -.224        64.3        4.87        2.11    
IRKT   3.5    217.        1.60        48.5        5.00        2.48    
KERG   5.9    153.       -552.          .         5.86        2.58    
KIRU   1.0    2.83        12.1        55.0        8.00        1.86    
KIT3   2.5    108.       -.235        61.4        4.38        2.81    
KOKB*  3.9    8.98       -.134        42.3        6.91        2.35    
KOSG*  5.8    1.14        169.          .         3.20        2.07    
KOUR   1.0    2.95        2.43          .         10.0        2.07    
LPGS   7.0    .147e+04   -.344        54.9        5.46        3.02    
MADR*  6.8    .221       -1.25          .         4.16        2.33    
MALI   1.9    128.       -.615e+04      .         7.49        2.24    
MCM4   2.0    82.5       -.277        45.0        5.53        1.68    
MDO1   2.0    2.21       -.961        32.0        4.53        2.75    
METS   4.8    .180       -5.13        57.4        3.24        2.11    
NLIB   6.9    .215       -.728        37.1        3.61        2.65    
NOTO   6.9    .186       -1.49        39.1        4.04        3.13    
OHIG   4.9    .461e+05    .161        58.7        5.09        1.04    
ONSA   1.9    .324       -.739        38.5        3.00        2.06    
PAMA   2.6    .573e+04   -.864          .         11.1        1.86    
PERT   5.0    2.76       -3.44        50.8        4.00        3.45    
PIE1   4.7    124.       -1.46        36.3        4.00        2.60    
SANT*  7.0    .293        .256          .         5.15        2.60    
SHAO   7.0    86.9       -.228        73.7        4.16        2.44    
STJO   7.0    3.02        1.68        40.7        4.32        2.75    
THU1   4.8    71.8       -.216        46.8        4.45        2.70    
TID2   7.0    .249        .913        42.6        5.05        3.25    
TIDB*  7.0    .250        1.08          .         5.06        2.75    
TROM*  2.8    .173e+04    24.6          .         5.00        1.14    
TSKB   1.0    .400       -10.2        46.0        4.00        2.94    
USUD   7.0    255.        .709        35.0        4.49        2.61    
VILL   4.0    .119e+05   -52.2        64.3        4.00        2.75    
WETT*  7.0    .242        2.58          .         6.60        2.41    
YAR1*  7.0    3.42        .259          .         4.16        2.64    
YELL*  7.0    .231       -1.02        41.3        4.30        1.86    
ZWEN    .9    93.1       -.258        57.0        5.00        2.40    
PRN01  6.9    83.3        546.        51.9        5.30        2.45    
PRN02  6.9    80.9       -225.        51.5        4.74        2.52    
PRN04  7.0    79.8        6.37        47.5        5.45        2.14    
PRN05  7.0    80.7        19.6        49.5        4.87        2.68    
PRN06  7.0    80.6        5.02        53.0        5.15        2.43    
PRN07  6.9    81.2        714.        52.9        5.18        2.15    
PRN09  7.0    82.7       -8.53        54.8        4.87        2.24    
PRN12  4.9    .731       -182.        55.4        4.64        2.95    
PRN14  6.5    79.7        12.0        52.7        5.18        2.31    
PRN15  7.0    3.70        262.        54.5        5.03        2.29    
PRN16  6.8    82.4       -166.        55.0        5.45        2.09    
PRN17  7.0    84.8       -104.        49.4        4.89        2.46    
PRN18  7.0    79.8       -6.06        48.0        4.77        2.63    
PRN19  7.0    82.0        314.        44.9        4.31        2.44    
PRN20  6.6    .529e+04    23.3        52.6        4.65        2.44    
PRN21  6.6    82.6       -12.5        51.6        5.30        2.37    
PRN22  6.9    81.4        278.        52.0        5.59        2.16    
PRN23  6.7    81.9        5.74        48.8        5.46        2.14    
PRN24  7.0    80.7        196.        52.7        5.31        2.22    
PRN25  6.9    82.0       -.675        51.8        5.31        2.21    
PRN26  7.0    82.9       -138.        52.9        5.00        2.41    
PRN27  7.0    80.9        15.7        46.1        4.60        2.64    
PRN28  7.0    2.64        59.8        58.3        4.77        2.74    
PRN29  7.0    81.7        5.23        47.2        4.88        2.34    
PRN31  7.0    81.9        237.        49.4        4.90        2.66    
_______________________
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
      96  1 14   96  1 15   96  1 16   96  1 17   96  1 18   96  1 19   96  1 20
prn   3d rss (m)
  1       3.5        3.2        2.7        3.2        3.2        3.3        2.9 
  2       8.2        6.4        6.1        6.5        6.9        5.8        6.6 
  4       3.2        4.0        4.0        3.4        2.6        2.9        3.0 
  5       7.2        7.5        7.8        7.5        6.4        7.9        5.3 
  6       6.1        5.7        4.3        5.5        4.9        6.4        6.1 
  7       5.4        5.1        4.3        3.9        3.9        4.1        4.1 
  9       5.6        6.2        6.7        6.8        5.5        6.9        6.3 
 12       4.3        2.4       23.0       36.4        1.6                       
 14       5.4        6.0        5.1        5.0        5.2        5.5        5.4 
 15       4.7        5.4        4.8        4.1        4.9        4.2        3.8 
 16       5.5        5.5        5.5        5.7        7.0        7.3        5.3 
 17       5.0        4.6        4.4        4.5        5.1        4.8        4.3 
 18       4.6        3.0        3.4        3.0        3.5        3.4        3.1 
 19       7.8        5.8        7.6        6.7        4.4        6.7        4.7 
 20       6.1        6.0        5.5        4.6        5.4        5.2        5.0 
 21       6.7        5.8        6.3        5.3        6.2        5.2        5.5 
 22       5.4        4.1        6.8        6.4        4.8        7.1        5.1 
 23       2.6        4.0        4.6        6.2        6.8        2.2        4.3 
 24       2.8        3.0        2.8        3.0        3.2        3.6        3.3 
 25       6.9        6.7        6.6        6.2        6.8        8.0        7.4 
 26       5.4        4.5        3.9        4.0        4.9        5.2        4.3 
 27       6.2        5.1        4.0        4.3        4.4        5.0        3.8 
 28       3.9        2.8        2.8        3.6        4.2        4.2        3.1 
 29       2.2        2.7        2.6        3.2        2.8        2.8        3.2 
 31       3.3        2.4        2.6        3.0        3.0        2.9        3.0 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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