Subject: [IGSREPORT-2940] Wk 0867 JPL Analysis Report
From: D C Jefferson
Date: Tue, 3 Sep 1996 15:38:46 PDT

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IGS Electronic Report    Tue Sep  3 15:38:46 PDT 1996      Message Number 2940
******************************************************************************

Author: D C Jefferson
Subject: Wk 0867 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0867 (DAYS 231-237, DATES 1996 Aug 18 - Aug 24)
******************************************************************************

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/0867.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08677.sum         This text file.
jpl08677.erp         Earth rotation parameters for GPS week 867.
jpl08677.snx         Ground station coordinates for GPS week 867, SINEX format.
jpl0867[0-6].sp3     GPS ephemerides for GPS week 867, sp3 format.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 20.0 cm

According to the file nanu1996.mes obtained from the IGS CBIS, PRN01 was
unusable on days 229 through 235.  Although used in each day's analysis,
we have chosen to exclude this satellite from our sp3 orbit products for
days 232 and 233 (jpl08671.sp3 and jpl08672.sp3).  

Data from PRN10 continues to appear mismodeled in our processing.  Although
used in each day's analysis, we have chosen to excluded this satellite from
our sp3 orbit prodcucts for the entire week (jpl0867[0-6].sp3).

Also, PRN16 was declared unusable during various periods on days 233
through 235 for mantainence/repositioning.  Inclusion of data from this 
satellite on previous days resulted in many outliers in our solutions, and
therefore, these days were reanalyzed excluding this satellite.  Data from
this satellite is included normally beginning with day 235.

Lastly, PRN28 was declared unusuable on day 236 for maintenance/repositioning.
Navigation data from this satellite did not meet our convervgence criteria
this nor the following day (237), and were subsequently excluded from both
days analyses.

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 on days 234 and 236.
WARNING: FAIR (not ALGO) used as reference clock on days 235.
WARNING: Data from PRN16 excluded on days 231-234 due to maneuvers.
WARNING: Data from PRN28 excluded on days 236 and 237 due to a maneuver.
WARNING: Data from DGAR, KOKB, ONSA, POTM, STJO, WETT excluded day 231.
WARNING: Data from BRU1, DGAR, ENG1, FMC2, FORT, ONSA, SHK1, STL3 excluded 
         day 232.
WARNING: Data from CAS1, CMBB, DAV1, DGAR, FORT, ONSA, POTM, TAIW excluded               day 233.
WARNING: Data from CMBB, DAM2, DGAR, SNI1 excluded day 234.
WARNING: Data from CMBB, DAM2, SNI1 excluded day 235.
WARNING: Data from CHIL, DAM2, DGAR, GRAZ, LPGS excluded day 236.
WARNING: Data from DGAR, STJO excluded day 237.

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 867 (1996 Aug 18 - Aug 24)
     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
50313.50  28952  39642   130501  1097    4    4     8      8 37 11 24  120 -352 
50314.50  29093  39303   129382  1142    3    4     8      8 37 12 24  168 -333 
50315.50  29234  38954   128246  1130    3    4     9      9 37 11 24  157 -375 
50316.50  29357  38593   127108  1146    3    4     8      8 37 11 24  143 -422 
50317.50  29473  38228   125926  1217    3    4     8      8 37 10 25  154 -334 
50318.50  29572  37893   124717  1202    3    3     7      7 37 13 24  147 -354 
50319.50  29659  37550   123476  1279    3    4     7      7 37 12 24  140 -374 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 867:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 867 (1996 Aug 18 - Aug 24)
      96  8 18   96  8 19   96  8 20   96  8 21   96  8 22   96  8 23   96  8 24
prn   3d rss (m)
  1       0.26       1.27       3.03       0.38       0.27       0.25       0.16
  2       0.20       0.23       0.15       0.09       0.12       0.13       0.15
  3       0.28       0.33       0.29       0.39       0.25       0.26       0.27
  4       0.26       0.23       0.19       0.23       0.26       0.18       0.12
  5       0.18       0.20       0.23       0.13       0.15       0.14       0.09
  6       0.26       0.29       0.32       0.40       0.31       0.23       0.23
  7       0.25       0.22       0.14       0.11       0.13       0.09       0.07
  9       0.10       0.20       0.29       0.14       0.14       0.10       0.06
 10       1.10       1.00       1.03       1.00       1.14       1.08       0.99
 14       0.57       0.52       0.39       0.28       0.16       0.23       0.15
 15       0.13       0.10       0.24       0.28       0.25       0.13       0.10
 16                                                   0.4        0.34       0.32
 17       0.20       0.28       0.45       0.44       0.40       0.33       0.27
 18       0.23       0.26       0.33       0.20       0.10       0.10       0.12
 19       0.15       0.12       0.09       0.17       0.12       0.14       0.18
 21       0.36       0.30       0.20       0.30       0.28       0.18       0.17
 22       0.22       0.32       0.20       0.16       0.13       0.14       0.22
 23       0.22       0.26       0.26       0.30       0.22       0.28       0.17
 24       0.20       0.22       0.24       0.22       0.21       0.18       0.23
 25       0.14       0.09       0.33       0.28       0.18       0.10       0.11
 26       0.11       0.17       0.25       0.20       0.10       0.20       0.19
 27       0.14       0.14       0.12       0.09       0.12       0.15       0.15
 28       0.16       0.20       0.30       0.29       0.3                       
 29       0.09       0.17       0.23       0.16       0.06       0.09       0.08
 31       0.17       0.11       0.23       0.30       0.29       0.17       0.09
_______________________
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 867 (1996 Aug 18 - Aug 24)
 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   1.0    4.86        1.14        40.0        4.00        3.09    
ALGO*  5.6    .138        4.69        50.0        5.00        2.84    
AREQ   6.0    91.1       -1.45        38.5        4.88        2.58    
ASC1   7.0    79.8       -.971        70.0        5.45        1.70    
BAHR   6.7    1.20        434.        57.9        6.16        3.92    
BOGT   6.0    281.       -.665        54.1        5.85        2.30    
BRU1    .9    .288e+06    486.        84.0        8.00        2.75    
BRUS   4.9    108.        1.55        64.0        4.67        2.72    
CAS1    .9    5.57        .145e+04    33.0        5.00        2.12    
CASA   1.0    14.8        85.3        38.0        4.00        3.06    
CHAT   6.0    119.       -.678        79.3        5.69        2.81    
CHUR   1.0    9.48        13.9        37.0        5.00        1.70    
COCO   5.9    192.       -.184e+04    39.0        8.14        2.87    
CRO1   1.9    257.       -1.08        43.0        7.50        2.20    
DAV1   3.8    12.8        .149e+04    31.5        5.78        1.69    
DGAR    .5    .244e+06   -30.3          .         4.00        .682    
EISL   5.8    .687e+07   -.129e+05    40.7        5.85        2.86    
ENG1   1.8    .287e+06    523.        94.0        12.5        1.97    
FAIR*  7.0    49.0       -1.52        38.8        4.74        2.43    
FORT   2.9    .200        .345        47.4        5.00        3.85    
GOL2*  7.0    19.0       -1.07        48.0        5.46        3.01    
GUAM   7.0    106.       -.968        61.9        7.66        2.39    
HART*  7.0    59.3        16.3        43.3        4.44        2.95    
HKLO   1.0    .289e+06    491.        50.0        6.00        2.41    
IISC   5.0    76.4       -.292        65.2        6.07        2.65    
IRKT   6.9    .337       -1.06        62.0        5.00        2.81    
JPLM   3.0    76.1        42.6        34.7        4.37        3.45    
KELY   2.1    .178e+05   -1.22        71.0        5.00        1.91    
KERG   3.9    162.       -13.5          .         5.52        2.45    
KIRU   1.0    13.0       -12.1        55.0        8.00        2.21    
KIT3   1.0    208.        .361        58.0        5.00        3.26    
KOKB*  6.0    .157       -.286        72.6        7.19        2.91    
KOSG*  7.0    298.       -.504e-01    44.5        4.90        2.44    
KOUR   1.0    4.12        1.06          .         8.00        2.08    
KWJ1   6.0    82.7       -.688        51.5        7.55        1.91    
LPGS   4.1    .259e+04   -2.25        58.0        5.46        2.36    
MADR*  5.8    .142       -.610          .         5.34        2.48    
MALI   4.9    .155e+05   -42.2          .         8.21        2.43    
MAS1   7.0    251.       -1.72        47.1        4.46        2.80    
MCM4   5.9    85.8       -1.25        37.6        4.84        1.89    
MDVO   2.9    .940e+05    582.        65.3        6.00        2.74    
METS   1.0    .273        6.02        49.0        5.00        2.24    
NOTO   1.0    .170       -4.32        40.0        5.00        3.26    
PAMA   7.0    .259e+04   -.952          .         9.72        2.38    
PERT   7.0    1.87       -4.75        52.5        5.65        3.02    
PIE1   1.9    .           .           39.1        6.09        2.67    
POL2   6.0    .316e+07    .120e+05    54.8        4.52        2.80    
RCM5   3.0    99.4       -1.18        51.3        10.7        2.54    
REYK   3.0    92.3       -1.72        61.0        6.00        1.96    
SANT*   .8    .120        3.11        40.0        5.00        2.27    
SHAO   1.0    117.       -2.70        86.0        7.00        2.83    
STJO   1.0    3.47       -2.61        33.0        4.00        2.57    
THU1   3.9    75.3       -.763        52.0        5.51        2.44    
TID2*  7.0    528.       -1.12        39.2        5.30        3.11    
TROM*  4.7    5.51        43.2          .         5.21        1.90    
USUD   6.0    .746       -.167e-01    34.0        5.52        2.88    
WTZR*  7.0    16.4       -1.12        63.3        5.03        2.78    
WUHN   5.8    3.87       -4.06        46.3        6.26        2.97    
YAR1*  6.9    .135e+05   -5.50          .         4.40        2.39    
YELL*  5.9    .170       -2.11        50.8        5.22        2.01    
PRN01  6.3    252.        42.5        54.7        6.19        2.66    
PRN02  7.0    79.1       -284.        56.0        5.74        2.72    
PRN03  6.8    82.3        42.9        54.5        6.15        2.27    
PRN04  7.0    81.5        39.7        52.7        5.87        2.37    
PRN05  7.0    79.5        52.8        53.0        5.30        2.58    
PRN06  6.6    82.2        1.16        52.0        6.15        2.27    
PRN07  6.6    80.1        725.        54.0        5.88        2.28    
PRN09  7.0    78.7       -8.47        55.2        5.87        2.49    
PRN10  7.0    80.8        71.3        54.7        6.45        2.60    
PRN14  7.0    80.7        13.7        50.0        6.30        2.49    
PRN15  7.0    3.33        331.        56.3        6.03        2.48    
PRN16  2.9    80.2        23.4        52.6        6.33        2.20    
PRN17  6.9    82.8       -124.        54.4        5.86        2.43    
PRN18  6.9    79.9        9.09        51.7        6.30        2.64    
PRN19  7.0    80.6        35.5        52.0        5.45        2.54    
PRN21  7.0    84.3       -28.5        51.8        6.00        2.64    
PRN22  7.0    80.0        330.        49.1        6.18        2.42    
PRN23  7.0    82.0        1.85        56.5        5.86        2.52    
PRN24  7.0    79.4        237.        54.8        6.15        2.54    
PRN25  7.0    80.1       -3.81        50.7        6.00        2.49    
PRN26  7.0    82.3       -24.0        52.2        6.02        2.59    
PRN27  6.9    82.2        38.5        50.7        5.73        2.67    
PRN28  4.8    1.86        99.8        68.9        6.21        2.73    
PRN29  7.0    80.5        12.7        47.8        5.87        2.68    
PRN31  6.8    83.5        646.        53.9        5.86        2.43    
_______________________
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  8 18   96  8 19   96  8 20   96  8 21   96  8 22   96  8 23   96  8 24
prn   3d rss (m)
  1      10.9       10.3        5.4        6.8        6.7        6.9        7.0 
  2       3.1        3.1        3.3        3.8        3.6        3.8        5.3 
  3       5.0        4.8        6.9        7.0        6.6        7.2        5.4 
  4       4.2        3.9        3.5        3.7        3.6        3.6        4.2 
  5       5.1        4.4        4.0        4.9        4.6        5.0        4.4 
  6       7.5        6.9        6.9        8.9       11.2       10.6       13.3 
  7       8.2        9.7        8.7        7.4        7.8        7.4        7.9 
  9       2.9        3.5        2.6        3.0        2.6        2.5        2.2 
 10       6.2        6.2        7.5        9.6       11.1       14.2       10.4 
 14       6.0       18.0       15.1       26.4       28.3       12.6       10.8 
 15       3.0        2.3        2.3        2.5        2.4        3.0        3.9 
 16                                                   3.7        5.9        3.6 
 17       4.7        3.9        4.4        2.8        2.4        2.4        2.6 
 18       4.5        3.5        4.6       24.5       30.2       12.0        4.1 
 19       2.8        2.5        3.6        3.8        3.9        4.6        5.3 
 21       7.8        7.9        7.7        8.1        7.1        7.5        7.7 
 22       6.0        5.3        6.0        7.2        6.4        5.4        5.1 
 23       4.9        3.7        4.9        6.5        7.1        4.4        6.3 
 24       4.7        4.5        4.0        4.4        4.6        4.5        4.0 
 25       2.4        3.1        3.8        4.6        4.9        4.2        4.6 
 26       4.1        4.1        4.6        3.4        4.7        5.1        5.1 
 27       3.9        4.3        5.6        5.0        5.3        5.4        5.9 
 28       6.9        7.4        9.2       10.5        9.0                       
 29       5.9        4.0        4.9        6.0        8.4        7.4        5.4 
 31       3.6        3.6        3.3        3.9        4.0        3.5        4.4 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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