Subject: [IGSREPORT-2518] Wk 0844 JPL Analysis Report
From: D C Jefferson
Date: Tue, 26 Mar 1996 16:05:48 PST

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IGS Electronic Report    Tue Mar 26 16:05:48 PST 1996      Message Number 2518
******************************************************************************

Author: D C Jefferson
Subject: Wk 0844 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0844 (DAYS 70-76, DATES 1996 Mar 10 - Mar 16)
******************************************************************************

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/0844.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08447.sum         This text file.
jpl08447.erp         Earth rotation parameters for GPS week 844.
jpl08447.snx         Ground station coordinates for GPS week 844, SINEX format.
jpl0844[0-6].sp3     GPS ephemerides for GPS week 844, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 20.1 cm

Beginning day 071, we use GOL2, the Turbo-Rogue receiver at Goldstone,
California, as a fixed site instead of GOLD.  As both receivers are
operating with the same Deep Space Network GPS antenna, the constrained
nominal coordinates have not changed.  As GOL2 is a Turbo-Rogue, we analyze 
all pseudorange from this receiver; this data was excluded when GOLD was used.

Additionally, beginning this week, we add two stations to our global network.
As with most stations, these sites are 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)
EBRE (Roquetes, Spain):       4833518.5710     41541.2432   4147442.2876
WTZR (Wettzell, Germany):     4075580.6300    931853.6277   4801568.9454

Please note that the coordinates for WTZR were obtained by applying the
site tie vectors in wtzr0196.log (found at the IGS CBIS) to our nominal
coordinates for WETT.  We are not currently constraining WTZR as a fiducial
site.

Lastly, as the results for day 077 are not completed yet, the last column in 
our orbit repeatability table contains only one decimal place of precision
and represents the overlap between days 075 and 076 only.

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: NLIB (not ALGO) used as reference clock on day 073.
WARNING: ONSA (not ALGO) used as reference clock on day 074.
WARNING: PIE1 (not ALGO) used as reference clock on days 075 and 076.
WARNING: Data from BOR1, TIBB, ZIMM excluded day 070.
WARNING: Data from BOR1, MDVO, TABL excluded day 071.
WARNING: Data from BOR1, FAIR, MATE, MDVO, SOL1, TIBB excluded day 072.
WARNING: Data from EBRE, FAIR, KIT3, MAS1, MATE, NUNE, NYAL, ONSA, WHC1                  excluded day 073.
WARNING: Data from KRAK, MAS1, WHC1 excluded day 074.
WARNING: Data from FAIR, KOUR, MATE, NYAL, THU1 excluded day 075.
WARNING: Data from FAIR, WETT, WHC1 excluded day 076.

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 844 (1996 Mar 10 - Mar 16)
     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
50152.50 -20262  43480   418384  2537    5    5    14     14 37 11 24  168  289 
50153.50 -20086  43813   415831  2570    5    5    14     14 37 12 24  162  325 
50154.50 -19959  44149   413315  2461    5    5    14     14 37 11 24  129  365 
50155.50 -19822  44504   410941  2287    5    5    14     14 37  9 24  128  343 
50156.50 -19635  44853   408705  2185    5    5    14     14 37 10 24  217  336 
50157.50 -19424  45183   406571  2083    5    5    14     14 37  9 24  206  315 
50158.50 -19217  45532   404531  1997    4    5    13     13 37 10 24  204  301 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 844:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 844 (1996 Mar 10 - Mar 16)
      96  3 10   96  3 11   96  3 12   96  3 13   96  3 14   96  3 15   96  3 16
prn   3d rss (m)
  1       0.07       0.09       0.16       0.25       0.14       0.12       0.1 
  2       0.24       0.29       0.12       0.13       0.19       0.12       0.1 
  4       0.16       0.11       0.19       0.18       0.10       0.20       0.2 
  5       0.17       0.15       0.09       0.15       0.06       0.11       0.1 
  6       0.14       0.13       0.23       0.27       0.36       0.18       0.3 
  7       0.10       0.10       0.08       0.13       0.16       0.15       0.1 
  9       0.20       0.09       0.15       0.16       0.20       0.15       0.2 
 14       0.12       0.19       0.14       0.25       0.09       0.08       0.1 
 15       0.35       0.18       0.22       0.24       0.17       0.26       0.3 
 16       0.10       0.12       0.17       0.22       0.12       0.11       0.1 
 17       0.11       0.15       0.15       0.16       0.13       0.15       0.1 
 18       0.32       0.34       0.31       0.33       0.19       0.25       0.5 
 19       0.37       0.55       0.38       0.35       0.33       0.14       0.3 
 20       0.19       0.18       0.14       0.14       0.10       0.10       0.1 
 21       0.10       0.17       0.16       0.25       0.19       0.12       0.1 
 22       0.33       0.28       0.17       0.12       0.16       0.22       0.2 
 23       0.41       0.46       0.53       0.42       0.20       0.22       0.3 
 24       0.07       0.11       0.14       0.20       0.20       0.15       0.2 
 25       0.11       0.09       0.16       0.21       0.12       0.18       0.2 
 26       0.16       0.25       0.31       0.27       0.15       0.18       0.1 
 27       0.18       0.28       0.21       0.20       0.20       0.27       0.3 
 28       0.21       0.27       0.20       0.33       0.13       0.15       0.1 
 29       0.19       0.29       0.17       0.25       0.10       0.21       0.1 
 31       0.49       0.65       0.56       0.32       0.32       0.23       0.4 
_______________________
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 844 (1996 Mar 10 - Mar 16)
 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   1.9    8.08       -1.36        42.6        4.00        2.83    
ALGO*  3.7    .473e-01    .481        39.2        4.00        2.88    
ANKR   2.6    215.       -1.44        66.2        4.00        2.60    
AREQ   6.7    87.4       -1.25        44.3        5.06        2.55    
AUCK   1.0    72.5       -.844        38.0        7.00        3.09    
BRMU   3.7    107.       -1.47        38.0        5.83        2.88    
BRUS   5.0    .325        9.14        57.6        4.00        2.67    
CAS1   4.7    .178e+05    80.6        47.4        4.83        1.80    
CHAT   6.8    97.5       -1.27        83.0        5.76        2.71    
CRO1   6.8    132.       -1.27        45.5        5.16        2.12    
DAV1   2.8    12.2        80.8        31.9        4.68        1.52    
EISL   2.9    .804e+07   -.167e+05    38.6        6.00        2.67    
FAI2   5.8    75.3       -1.50        43.8        4.36        2.08    
FAIR*  2.0    1.49       -1.43          .         4.00        2.00    
FORT   5.6    .143       -.193e+04    49.4        7.20        3.18    
GODE   2.0    .179        .172e+05    44.5        5.00        2.80    
GOL2   6.8    9.47       -.945        63.9        4.77        3.07    
GOLD*  1.7    .182       -1.17          .         3.49        2.02    
GUAM   6.8    94.8       -1.27        52.3        6.30        2.30    
HOB2   1.8    .397       -.528        55.6        6.55        2.90    
IISC   6.6    68.9       -1.27        69.5        4.86        2.25    
IRKT   6.6    .733e+04    1.53        50.4        4.31        2.92    
JPLM   4.8    46.9        39.2        25.6        3.82        3.04    
KERG   3.8    116.       -664.          .         5.77        2.46    
KIRU   4.0    2.65        10.8        54.9        8.27        1.70    
KIT3   1.9    108.       -.838        57.5        4.00        2.83    
KOKB*  6.8    .151       -1.11        59.6        5.45        2.62    
KOSG*  6.7    .190e+04   -.224        35.8        3.00        2.30    
LPGS   6.6    .780e+04   -3.38        53.1        5.48        2.16    
MAC1   2.9    70.2       -1.38        31.0        4.00        2.41    
MADR*  6.3    1.55       -1.05          .         4.72        2.21    
MALI   3.9    .643e+04    38.3          .         8.26        2.33    
NLIB   2.8    .638e-01   -.583        42.7        4.00        2.78    
NOTO   3.8    .982e-01   -4.02        33.7        4.28        2.99    
OHIG   3.4    .186e+05   -3.65        57.1        5.12        1.35    
ONSA   1.7    .115        1.66        39.0        3.52        2.25    
PAMA   5.6    208.       -1.28          .         11.4        1.93    
PERT   6.8    2.35        61.5        51.5        5.15        3.18    
PIE1   1.9    .           .           38.0        4.53        2.78    
POL2   2.9    71.6       -1.17        53.1        4.00        2.73    
REYK   6.8    84.2       -1.27        55.3        6.74        1.85    
SANT*  6.8    .638        3.55          .         4.87        2.54    
SHAO   5.8    90.7       -1.27        136.        4.69        2.06    
STJO   5.0    320.       -1.84        35.4        4.36        2.63    
THU1   3.7    69.1       -1.55        48.0        4.78        2.80    
TID2   4.8    277.       -.907        42.8        4.86        3.11    
TIDB*  6.4    .369        1.51          .         5.11        2.66    
TROM*  5.7    7.15        454.          .         4.72        1.54    
TSKB   1.0    .697       -.345        47.0        4.00        2.57    
USUD   5.8    11.3        .981        40.0        4.74        2.95    
VILL   2.8    1.74       -2.04        57.5        4.00        2.87    
WETT*  4.4    .102       -1.32          .         4.23        2.30    
YAR1*  6.8    2.00        4.35          .         4.34        2.60    
YELL*  5.6    .150       -.127e-01    42.7        5.05        1.60    
ZWEN   2.9    .270e+04   -1.04        55.7        4.72        2.63    
PRN01  6.5    78.4        459.        58.0        5.60        2.11    
PRN02  6.8    82.4       -240.        54.8        4.74        2.82    
PRN04  6.8    79.5        14.5        49.9        5.15        2.16    
PRN05  6.8    81.0        28.3        54.9        5.18        2.48    
PRN06  6.6    81.4        5.89        55.3        5.73        2.35    
PRN07  6.5    82.1        716.        54.3        4.87        2.16    
PRN09  6.8    80.7       -15.8        54.8        5.15        2.40    
PRN14  6.8    81.4        11.8        53.9        5.15        2.45    
PRN15  6.8    3.33        279.        56.1        4.87        2.22    
PRN16  6.7    80.6        1.98        51.5        5.60        2.26    
PRN17  6.8    80.0       -110.        54.3        5.17        2.64    
PRN18  6.5    79.9       -8.80        53.7        5.90        2.23    
PRN19  6.6    83.8        415.        51.4        5.15        2.52    
PRN20  6.8    82.3        7.64        57.7        4.87        2.51    
PRN21  6.8    80.5       -17.9        57.7        5.00        2.61    
PRN22  6.7    79.1        290.        54.0        5.44        2.39    
PRN23  6.8    80.3        6.78        50.9        5.15        2.31    
PRN24  6.8    80.6        9.97        53.4        5.87        2.24    
PRN25  6.8    83.6       -2.57        55.4        5.00        2.16    
PRN26  6.6    81.5       -165.        53.1        6.02        2.32    
PRN27  6.8    80.3        20.8        52.7        5.30        2.46    
PRN28  6.5    2.22        69.8        80.1        5.00        2.63    
PRN29  6.3    79.8        6.30        50.6        5.46        2.32    
PRN31  6.3    79.9        369.        53.5        5.15        2.46    
_______________________
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  3 10   96  3 11   96  3 12   96  3 13   96  3 14   96  3 15   96  3 16
prn   3d rss (m)
  1       9.2       11.2        9.5        8.6        9.1        7.4        6.7 
  2       8.9        5.5        4.6        5.7        5.9        6.1        7.7 
  4       2.3        0.8        2.8        1.5        2.8        2.4        3.4 
  5       5.7        5.8        5.4        6.1        6.3        6.5        7.5 
  6       7.5        5.8        7.1        6.8        7.2        7.0        8.0 
  7       6.7        6.2        6.6        6.9        7.2        7.0        6.6 
  9       2.7        3.1        3.4        2.9        2.8        2.4        2.6 
 14       3.9        4.7        4.4        4.2        4.2        4.3        3.7 
 15       3.4        3.2        3.4        4.0        4.5        3.3        4.4 
 16       2.9        1.5        3.0        9.9        8.4        5.1        5.7 
 17       3.5        4.2        3.2        3.5        4.6        4.6        5.3 
 18      14.1        1.6        9.6       13.2       11.0       10.2       13.2 
 19       1.9        1.4        1.8        1.9        2.2        2.5        2.5 
 20       4.8        5.2        5.2        4.5        4.8        4.1        5.6 
 21       5.3        2.1        2.3        1.9        3.7        3.8        3.9 
 22       3.3        5.6        5.1        4.6        4.3        3.3        3.0 
 23       6.9        8.5        6.2        6.5        7.0        5.2        6.8 
 24       2.6        2.2        3.4        3.0        2.9        3.2        2.9 
 25       3.9        4.8        4.0        3.7        4.1        3.2        4.1 
 26       7.8        9.1        8.1        6.9        8.0        6.9        8.1 
 27       4.2        3.2        2.7        2.8        3.4        3.1        3.3 
 28       9.8        3.0        3.6        4.1        3.8        4.5        5.0 
 29       8.8        6.6        8.0        8.5        7.3        8.2        9.6 
 31       5.0        6.0        5.1        5.1        5.0        5.4        6.7 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   albh algo ankr areq auck brmu brus cas1 chat cro1 dav1 eisl fai2 fair fort gode gol2 gold guam hob2 iisc irkt jplm kerg kiru kit3 kokb kosg lpgs mac1 madr mali nlib noto ohig onsa pama pert pie1 pol2 reyk sant shao stjo thu1 tid2 tidb trom tskb usud vill wett yar1 yell zwen

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