Subject: [IGSREPORT-2994] Wk 0870 JPL Analysis Report
From: D C Jefferson
Date: Mon, 23 Sep 1996 12:25:40 PDT

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IGS Electronic Report    Mon Sep 23 12:25:40 PDT 1996      Message Number 2994
******************************************************************************

Author: D C Jefferson
Subject: Wk 0870 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0870 (DAYS 252-258, DATES 1996 Sep 08 - Sep 14)
******************************************************************************

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/0870.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08707.sum         This text file.
jpl08707.erp         Earth rotation parameters for GPS week 870.
jpl08707.snx         Ground station coordinates for GPS week 870, SINEX format.
jpl0870[0-6].sp3     GPS ephemerides for GPS week 870, sp3 format.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 15.0 cm

Apparent mismodeling of recently-launched PRN10 seems to have had an adverse 
affect on LODR estimates over the past few weeks.  Beginning this week,
we have elected to indefinitely exclude data from this satellite from our 
analyses.  Some days in week 870 were processed prior to this decision, hence
the inclusion of PRN10 on these days.  PRN10 has been excluded, however, from
all final sp3 products for this week.

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: PIE1 (not ALGO) used as reference clock days 257 and 258.
WARNING: Data from PRN10 excluded days 254, 255, and 258.
WARNING: Data from HKLO excluded day 252.
WARNING: Data from DGAR excluded day 253.
WARNING: Data from DGAR, WUHN excluded day 254.
WARNING: Data from DGAR, POTM, WUHN, ZWEN excluded day 255.
WARNING: Data from DGAR, EISL, NYAL, ZWEN excluded day 256.
WARNING: Data from CLAR, DGAR excluded day 257.
WARNING: Data from DGAR, KRAK, WINT, WLPS excluded day 258.

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 870 (1996 Sep 08 - Sep 14)
     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
50334.50  29340  31257   104192  1320    3    3     8      8 37 11 25  -23 -398 
50335.50  29267  30897   102896  1271    3    4    10     10 37 11 25  -39 -343 
50336.50  29259  30501   101530  1461    3    3    10     10 37 12 24   -5 -370 
50337.50  29232  30160    99984  1632    3    3     9      9 37 12 24  -37 -346 
50338.50  29124  29775    98352  1631    3    3     9      9 37 12 25  -37 -365 
50339.50  29019  29423    96702  1669    3    3     9      9 37 13 25  -39 -399 
50340.50  28869  29049    94971  1794    3    3     9      9 37 12 24 -121 -376 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 870:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 870 (1996 Sep 08 - Sep 14)
      96  9  8   96  9  9   96  9 10   96  9 11   96  9 12   96  9 13   96  9 14
prn   3d rss (m)
  1       0.17       0.16       0.10       0.11       0.14       0.16       0.11
  2       0.08       0.15       0.13       0.07       0.12       0.10       0.10
  3       0.27       0.26       0.35       0.17       0.18       0.23       0.19
  4       0.17       0.18       0.22       0.15       0.06       0.10       0.08
  5       0.06       0.11       0.09       0.10       0.11       0.08       0.14
  6       0.23       0.14       0.34       0.31       0.23       0.17       0.13
  7       0.13       0.19       0.20       0.06       0.12       0.14       0.17
  9       0.08       0.17       0.15       0.14       0.07       0.13       0.10
 10       0.69       0.7                              0.7        0.6            
 14       0.08       0.40       0.42       0.15       0.22       0.25       0.22
 15       0.10       0.15       0.21       0.08       0.11       0.15       0.17
 16       0.50       0.38       0.42       0.16       0.36       0.39       0.27
 17       0.19       0.29       0.21       0.20       0.23       0.25       0.28
 18       0.12       0.42       0.25       0.15       0.10       0.13       0.14
 19       0.12       0.33       0.23       0.16       0.17       0.15       0.15
 21       0.16       0.16       0.09       0.10       0.13       0.17       0.07
 22       0.18       0.18       0.14       0.14       0.15       0.24       0.12
 23       0.18       0.24       0.16       0.14       0.16       0.25       0.15
 24       0.30       0.13       0.20       0.07       0.10       0.15       0.20
 25       0.16       0.18       0.13       0.18       0.17       0.16       0.10
 26       0.17       0.10       0.17       0.18       0.19       0.22       0.13
 27       0.13       0.09       0.11       0.11       0.10       0.10       0.14
 28       0.14       0.14       0.13       0.08       0.10       0.23       0.11
 29       0.15       0.13       0.17       0.12       0.15       0.19       0.18
 31       0.14       0.13       0.16       0.11       0.11       0.16       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 870 (1996 Sep 08 - Sep 14)
 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*  6.8    599.        3.08        48.4        5.45        2.87    
ANKR   1.0    138.       -3.24        57.0        5.00        2.54    
AREQ   4.0    94.1       -1.80        40.1        5.00        2.34    
ASC1   7.0    87.3       -2.41        65.1        5.61        1.62    
BAHR   4.4    .157e+05    431.        51.4        5.70        3.63    
BRAZ   2.0    94.9       -.397        51.0        5.00        2.30    
BRMU   2.0    114.       -1.81        40.0        8.00        3.12    
BRU1   1.0    .289e+06    496.        98.0        9.00        2.70    
BRUS   4.0    .246       -2.55        62.3        4.77        2.87    
CAS1   2.9    18.0        692.        38.3        5.39        1.94    
CASA   3.0    18.2        240.        39.0        5.35        3.08    
CHAT   6.0    115.       -2.27        82.3        5.52        2.75    
COCO   6.7    128.       -.187e+04    39.5        5.74        3.09    
CRO1   7.0    145.       -2.41        41.6        7.63        2.32    
DAV1   4.9    10.4        283.        31.6        5.20        1.37    
DGAR    .5    .246e+06   -52.7          .         7.00        .695    
EISL   5.9    .662e+07   -.143e+05    39.5        6.22        2.73    
ENG1   4.0    .289e+06    506.        94.0        11.8        3.58    
FAIR*  7.0    22.9       -2.29        39.2        5.18        2.13    
FORT   4.8    .142       -2.18        47.4        5.61        3.03    
GOL2*  7.0    19.6       -2.39        45.9        6.04        3.16    
GUAM   6.9    175.       -2.43        58.4        7.74        2.41    
HART*  5.0    .114e+04   -2.97        43.6        4.47        2.84    
HKLO   1.0    .288e+06    496.        49.0        5.00        2.68    
HOB2   1.0    .400       -6.15        42.0        5.00        2.72    
IISC   2.5    73.6       -3.23        68.7        6.00        2.28    
IRKT   5.9    .210       -2.73        56.9        4.84        2.88    
KELY   2.6    .195e+04   -2.63        58.3        6.13        1.48    
KERG   5.0    150.       -19.2          .         5.21        2.44    
KIRU   3.9    2.49       -9.97        55.7        6.49        2.16    
KIT3   1.0    168.       -.368        52.0        4.00        3.43    
KOKB*  7.0    .130       -.947        79.5        6.31        2.72    
KOSG*  7.0    1.99        1.65        42.6        4.49        2.53    
KOUR   2.0    3.01        .224          .         8.00        2.32    
KWJ1   6.8    116.       -2.40        53.1        7.60        1.81    
MAC1    .9    84.1       -3.18        29.0        4.00        2.44    
MADR*  6.8    .103       -2.67          .         4.88        2.44    
MAS1   4.9    30.2        .204        45.4        4.83        2.94    
MCM4   7.0    85.0       -2.40        36.0        4.74        1.91    
MDVO   1.6    .131        725.        65.1        6.00        2.60    
NOTO   3.0    .212       -4.18        36.4        5.34        2.82    
PAMA   4.9    170.       -2.13          .         9.41        2.20    
PERT   4.9    2.49       -8.73        52.0        5.43        2.75    
PIE1   1.9    .           .           40.0        6.00        3.09    
POL2   5.9    85.2       -2.78        58.1        4.00        2.71    
RCM5   2.0    99.1       -.399        64.5        7.51        2.45    
REYK   3.9    77.8       -2.57        55.4        6.26        1.76    
SANT*  6.8    .164e+04   -.723e-02    39.2        5.45        2.34    
SHAO   2.0    101.       -1.79        84.6        5.00        2.63    
STJO   3.9    90.5       -2.23        35.7        4.28        2.57    
TAIW   1.0    124.       -3.23          .         7.00        2.64    
THU1   3.9    71.8       -2.50        45.3        5.27        2.75    
TID2*  6.9    55.6       -2.73        41.0        6.44        3.27    
TROM*   .6    6.50        8.26          .         5.00        1.24    
USUD   7.0    1.46       -.927        33.6        5.45        2.89    
WTZR*  7.0    97.6       -2.95        61.3        4.00        2.67    
WUHN   2.8    3.33       -4.83        43.3        5.70        3.22    
YAR1*  7.0    3.44       -2.65          .         5.47        2.30    
YELL*  7.0    .173       -3.71        43.1        5.86        1.55    
PRN01  6.7    79.5       -.412        53.3        6.15        2.44    
PRN02  7.0    82.0       -291.        53.4        6.00        2.46    
PRN03  6.7    81.9        48.3        53.9        6.30        2.35    
PRN04  7.0    82.7        41.6        49.2        5.59        2.26    
PRN05  7.0    80.4        54.7        50.2        5.59        2.57    
PRN06  6.6    81.6       -.874e-01    51.2        5.74        2.45    
PRN07  6.8    83.4        725.        53.9        6.00        2.21    
PRN09  7.0    81.8       -12.4        53.2        5.74        2.41    
PRN10  4.0    78.7        126.        52.5        6.00        2.62    
PRN14  7.0    80.6        12.5        47.7        6.05        2.55    
PRN15  7.0    3.74        337.        55.7        5.90        2.35    
PRN16  7.0    84.1        23.3        50.2        5.73        2.65    
PRN17  6.9    81.5       -127.        54.2        5.89        2.31    
PRN18  6.8    81.1        8.84        49.6        5.90        2.43    
PRN19  7.0    81.9        80.8        50.3        6.04        2.34    
PRN21  7.0    81.8       -30.7        50.5        5.76        2.34    
PRN22  7.0    80.9        333.        48.2        5.60        2.31    
PRN23  7.0    78.4        1.22        56.0        6.31        2.27    
PRN24  7.0    78.0        282.        50.9        5.87        2.37    
PRN25  7.0    81.6       -5.48        52.8        6.02        2.59    
PRN26  6.6    81.5       -36.9        51.7        5.75        2.37    
PRN27  7.0    80.7       -1.01        50.5        5.87        2.64    
PRN28  6.7    2.53        103.        64.7        5.00        2.54    
PRN29  6.8    80.6       -1.90        46.0        7.87        2.43    
PRN31  6.8    82.0        10.8        55.2        6.00        2.38    
_______________________
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  9  8   96  9  9   96  9 10   96  9 11   96  9 12   96  9 13   96  9 14
prn   3d rss (m)
  1       8.2        8.8        9.3        9.9        8.8        8.7        8.3 
  2       4.6        5.3        4.5        3.7        3.7        4.8        4.6 
  3       7.1        6.9        7.9        8.9        6.9        6.7        6.9 
  4       3.2        3.6        3.4        2.9        3.2        4.5        3.5 
  5       4.8        4.9        3.4        4.0        4.4        5.5        2.6 
  6       9.8        9.3        8.5        9.4        8.2        8.0        7.9 
  7       5.4        6.0        5.4        7.9        7.3        8.2        9.9 
  9       2.9        2.6        3.6        4.3        2.7        3.6        3.0 
 10      18.3       18.6                             20.6       19.2            
 14      11.3       16.6       14.1        5.3        9.7        7.9        5.5 
 15       2.4        2.7        2.2        2.6        3.7        2.9        4.3 
 16      27.0       35.0        6.3        4.4        2.6        3.5       13.2 
 17       2.1        1.9        2.2        2.5        2.7        2.3        3.1 
 18       9.5        7.5        8.0        9.9       10.5        5.9        7.1 
 19       4.2        3.6        5.4       18.1       24.0        4.8        4.8 
 21       7.3        6.5        5.8        5.2        4.8        4.8        5.0 
 22       7.4        5.0        4.5        4.6        4.3        5.6        3.5 
 23       3.4        4.4        3.7        4.0        4.1        5.2        6.5 
 24       4.6        3.8        4.2        4.3        4.7        5.2        5.6 
 25       4.5        6.3        5.6        5.7        5.1        4.9        5.3 
 26       5.1        4.4        5.1        5.5        6.2        5.7        4.8 
 27       8.1        7.9        7.9        7.3        6.6        6.5        6.8 
 28       6.8        5.3        6.0        5.8       10.2        7.5        7.5 
 29      10.1        5.3        3.1        3.4        3.5        4.6        3.4 
 31       7.4        9.5        7.4        6.6        8.6        7.2        8.2 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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