Subject: [IGSREPORT-2535] Wk 0845 JPL Analysis Report
From: D C Jefferson
Date: Fri, 29 Mar 1996 15:34:38 PST

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IGS Electronic Report    Fri Mar 29 15:34:38 PST 1996      Message Number 2535
******************************************************************************

Author: D C Jefferson
Subject: Wk 0845 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0845 (DAYS 77-83, DATES 1996 Mar 17 - Mar 23)
******************************************************************************

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/0845.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08457.sum         This text file.
jpl08457.erp         Earth rotation parameters for GPS week 845.
jpl08457.snx         Ground station coordinates for GPS week 845, SINEX format.
jpl0845[0-6].sp3     GPS ephemerides for GPS week 845, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 17.7 cm

According to the file nanu1995.mes obtained from the IGS CBIS, PRN07 was
unusable on days 082 and 083 for maintenance/repositioning.  Data from this 
satellite did not meet our initial convergence criteria on these days, and 
have been excluded from our analyses accordingly.

Additionally, although usable, PRN24 has been excluded from our analyses
on days 082 and 083.  It's behavior has and continues to exceed certain 
tolerences in our software; we will subsequently include data from this 
satellite pending any modifications required.

Beginning this week, we add a new station to our global network.  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)
KWJ1 (Kwajalein Atoll, Marshall Island): 4833518.5710  41541.2432  4147442.2876

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 day 077.
WARNING: Data from KELY, SOL1 excluded day 077.
WARNING: Data from EBRE, FAIR, KELY, MAS1, MATE, SOL1, TIBB, WHC1, ZWEN                  excluded day 078.
WARNING: Data from CLAR, FAIR, MATE, NYAL, RCM5, SOL1, TABL, TIBB, ZIMM, ZWEN            excluded day 079.
WARNING: Data from DAM2, FAIR, MATE, OHIG, RCM5, TABL, TIBB, TID2, WETT, ZIMM,           ZWEN excluded day 080.
WARNING: Data from CHIL, FAIR, MATE, NYAL, RCM5, TROM, USC1, WETT, ZIMM, ZWEN            excluded day 081.
WARNING: Data from MADR, MAS1, MATE, MCM4, TABL, USC1, WETT, ZIMM, ZWEN                  excluded day 082.
WARNING: Data from BRUS, CHIL, KIRU, MADR, MAS1, MATE, NYAL, USC1, WETT, ZIMM,           ZWEN excluded day 083.

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 845 (1996 Mar 17 - Mar 23)
     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
50159.50 -19022  45885   402556  1953    5    5    13     13 37 10 24  209  334 
50160.50 -18746  46254   400640  1879    4    5    13     13 37 11 24  236  371 
50161.50 -18386  46686   398705  1991    5    5    13     13 37 11 24  270  426 
50162.50 -18095  47127   396645  2130    5    5    13     13 37 10 24  254  384 
50163.50 -17822  47549   394502  2155    4    5    13     13 37  9 24  224  329 
50164.50 -17637  47909   392342  2165    5    5    14     14 36  9 22  178  317 
50165.50 -17495  48186   390165  2189    5    5    13     13 37  9 22  175  259 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 845:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 845 (1996 Mar 17 - Mar 23)
      96  3 17   96  3 18   96  3 19   96  3 20   96  3 21   96  3 22   96  3 23
prn   3d rss (m)
  1       0.19       0.17       0.19       0.19       0.12       0.07       0.15
  2       0.15       0.30       0.19       0.13       0.23       0.17       0.26
  4       0.21       0.16       0.15       0.13       0.07       0.11       0.24
  5       0.20       0.24       0.28       0.17       0.11       0.14       0.11
  6       0.17       0.17       0.15       0.27       0.08       0.13       0.29
  7       0.20       0.20       0.20       0.15       0.2                       
  9       0.22       0.12       0.19       0.16       0.15       0.17       0.19
 14       0.08       0.07       0.12       0.10       0.17       0.14       0.15
 15       0.20       0.17       0.19       0.18       0.25       0.15       0.19
 16       0.17       0.28       0.15       0.13       0.13       0.18       0.17
 17       0.17       0.17       0.10       0.22       0.15       0.17       0.16
 18       0.23       0.25       0.16       0.13       0.08       0.12       0.20
 19       0.29       0.25       0.28       0.28       0.33       0.27       0.32
 20       0.17       0.14       0.29       0.27       0.17       0.18       0.14
 21       0.20       0.17       0.13       0.13       0.09       0.08       0.07
 22       0.11       0.19       0.21       0.30       0.23       0.17       0.17
 23       0.28       0.25       0.12       0.29       0.36       0.15       0.09
 24       0.15       0.18       0.13       0.20       0.1                       
 25       0.11       0.11       0.15       0.15       0.12       0.17       0.19
 26       0.18       0.19       0.16       0.14       0.19       0.13       0.13
 27       0.19       0.28       0.29       0.10       0.13       0.12       0.20
 28       0.14       0.17       0.15       0.09       0.10       0.09       0.15
 29       0.10       0.13       0.10       0.15       0.18       0.10       0.13
 31       0.40       0.28       0.27       0.22       0.29       0.26       0.19
_______________________
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 845 (1996 Mar 17 - Mar 23)
 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   4.0    7.20       -.706        42.1        3.84        2.77    
ALGO*  6.5    .923e-01    .509        39.6        3.75        2.94    
ANKR   6.8    237.       -1.33        66.1        4.31        2.28    
AREQ   6.0    91.3       -1.41        44.3        4.37        2.61    
AUCK   3.0    77.3       -1.44        38.7        4.74        3.01    
BRMU   3.0    144.       -1.18        36.3        5.35        2.90    
BRUS   3.0    .185e+04    6.49        59.0        4.37        2.81    
CAS1   6.9    10.0        188.        40.3        4.74        1.72    
CHAT   3.0    93.9       -1.39        83.0        5.69        2.79    
CRO1   7.0    136.       -1.33        45.5        5.49        2.22    
DAV1   1.9    47.5        124.        32.5        5.49        1.40    
DRAO   2.0    .723        13.6        36.0        4.00        3.06    
EISL   5.9    .750e+07   -.131e+05    41.6        6.35        2.72    
FAI2   7.0    38.9       -1.39        45.1        4.36        2.03    
FAIR*  2.0    .104       -1.46          .         4.00        2.09    
FORT   7.0    .143       -.193e+04    49.0        6.24        3.31    
GODE   2.0    .252        .172e+05    45.5        5.00        2.71    
GOL2   7.0    11.5       -.991        50.0        4.45        2.79    
GUAM   7.0    93.8       -1.33        50.2        7.73        2.19    
IISC   7.0    74.0       -1.33        68.5        5.04        2.22    
IRKT   4.9    .832e+04    3.68        50.4        4.67        2.61    
JPLM   1.0    505.        97.3        27.0        3.00        3.02    
KELY    .5    .334e+04   -1.28          .         6.00        1.72    
KERG   1.0    96.2       -664.          .         6.00        2.24    
KIRU   4.0    3.21        10.6        52.2        8.25        1.50    
KIT3   2.8    .107e+04   -1.18        60.4        4.39        2.41    
KOKB*  7.0    8.83       -.914        61.5        5.45        2.28    
KOSG*  7.0    2.22       -1.48        41.1        3.17        2.39    
KWJ1   3.0    89.6       -1.44        57.6        6.76        1.72    
LPGS   6.2    .435e+04   -2.14        50.2        5.48        1.80    
MAC1   2.9    78.8       -1.21        29.7        4.00        2.14    
MADR*  5.0    .103       -1.14          .         4.44        2.35    
MALI   6.0    869.        3.62          .         8.57        2.44    
METS   2.0    .386       -2.34        72.9        3.00        2.34    
NLIB   1.0    .477e-01   -.273        44.0        4.00        2.84    
NOTO   3.0    .188       -5.94        34.0        3.38        3.26    
OHIG   1.6    .857e+04   -1.06        62.0        4.60        1.57    
ONSA    .9    .679e-01    1.37        44.0        3.00        1.97    
PAMA   7.0    221.       -1.32          .         10.9        1.91    
PERT   7.0    2.18        61.0        49.8        4.47        3.18    
PIE1    .9    .           .           37.0        4.00        2.87    
POL2   3.8    72.8       -1.41        56.7        3.00        2.78    
REYK   3.0    76.1       -1.19        61.4        6.68        1.63    
SANT*  7.0    .778        3.53          .         5.00        2.78    
SHAO   7.0    97.2       -1.32        136.        4.20        1.63    
STJO   6.0    298.       -1.10        37.7        4.19        2.87    
THU1   5.0    71.8       -1.41        47.0        4.44        2.73    
TID2   6.0    .117       -1.68        44.0        4.00        3.07    
TIDB*  7.0    .137        1.67          .         4.32        2.80    
TROM*  3.0    12.2        509.          .         5.00        1.29    
TSKB   2.0    1.90        .432        48.5        4.00        2.82    
USUD   5.0    10.1        1.87        39.1        4.47        2.60    
VILL   5.0    2.52       -2.24        58.4        4.00        2.96    
WEST   2.9    63.1       -1.68        42.3        3.71        2.41    
WETT*  3.0    .720       -.717          .         5.04        2.06    
WTZR   1.0    .973e-01   -1.17        59.0        4.00        2.42    
YAR1*  7.0    2.12        4.35          .         4.30        2.32    
YELL*  7.0    .171       -.142        44.2        5.44        1.59    
ZWEN   1.0    .343e+05   -2.83        55.0        4.00        2.50    
PRN01  6.5    .405e+05    267.        57.8        5.00        1.89    
PRN02  7.0    82.4       -242.        50.9        4.87        2.73    
PRN04  7.0    82.3        15.6        50.5        5.30        2.24    
PRN05  7.0    80.6        29.5        48.5        5.30        2.40    
PRN06  6.8    83.6        6.03        53.9        5.60        2.26    
PRN07  4.8    80.9        716.        51.3        5.00        2.14    
PRN09  7.0    81.2       -16.6        57.6        5.00        2.35    
PRN14  7.0    82.1        11.8        49.2        5.18        2.42    
PRN15  7.0    3.16        281.        52.7        5.15        2.26    
PRN16  7.0    81.3        2.83        55.8        5.59        2.10    
PRN17  7.0    81.6       -111.        55.2        5.15        2.55    
PRN18  6.6    82.7       -9.05        54.5        5.74        2.07    
PRN19  7.0    79.7        425.        53.7        4.87        2.42    
PRN20  7.0    77.8        8.59        52.2        4.73        2.37    
PRN21  7.0    81.9       -18.6        52.7        5.03        2.46    
PRN22  7.0    81.7        292.        53.9        5.15        2.35    
PRN23  7.0    81.3        6.99        52.4        5.49        2.34    
PRN24  5.0    80.2       -16.1        59.0        5.22        2.32    
PRN25  7.0    82.2       -2.72        55.4        5.31        2.32    
PRN26  6.8    80.7       -168.        57.2        5.86        2.27    
PRN27  7.0    82.8        21.5        53.2        5.16        2.55    
PRN28  6.6    1.90        71.0        85.3        4.87        2.53    
PRN29  6.6    81.7        6.51        50.8        5.31        2.22    
PRN31  6.6    81.2        384.        54.1        5.00        2.23    
_______________________
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 17   96  3 18   96  3 19   96  3 20   96  3 21   96  3 22   96  3 23
prn   3d rss (m)
  1       7.3        7.7        8.4       10.0       10.9       11.2       12.1 
  2       5.3        4.6        7.7        6.5        6.0        2.7        4.1 
  4       3.4        3.4        3.1        3.8        3.7                   3.4 
  5       7.9        6.9        5.9        5.9        5.2        6.1        6.2 
  6       6.7        7.2        6.7        9.4        9.5        6.7        8.5 
  7       6.5        7.0        8.8        9.3        8.2                       
  9       2.7        2.5        2.6        3.0        3.0        3.1        2.3 
 14       3.4        3.6        5.3        3.6        4.4        4.3        5.8 
 15       5.6        5.3        4.3        3.4        3.2        2.7        4.0 
 16       5.0        5.6        3.7        4.4        4.0        3.6        3.4 
 17       4.2        4.4        4.6        4.0        3.9        4.8        4.3 
 18      14.6       11.7       13.4       15.3       14.4       14.2       13.1 
 19       2.4        2.2        2.0        1.8        2.2        1.8        2.2 
 20       5.8        5.5        5.1        4.6        4.2        6.2        5.1 
 21       5.5        3.3        2.7        2.1        3.8        5.8        3.4 
 22       2.9        3.2        4.3        2.9        3.1        3.7        5.1 
 23      10.2       10.4        9.8       10.5        7.6        9.6        6.7 
 24       2.6        2.4        3.4        2.8                                  
 25       3.7        5.0        5.4        4.4        3.9        3.0        3.5 
 26       7.1        5.9        7.5        8.0        7.9        8.0        7.9 
 27       3.1        3.5        3.8        3.7        3.5        4.1        3.2 
 28       4.3        4.6        6.1        5.1        5.2        4.3        6.3 
 29      10.8        8.6        7.9        8.7        9.6       11.1       11.4 
 31       4.6        4.1        4.1        5.0        4.1        2.9        4.3 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   albh algo ankr areq auck brmu brus cas1 chat cro1 dav1 drao eisl fai2 fair fort gode gol2 guam iisc irkt jplm kely kerg kiru kit3 kokb kosg kwj1 lpgs mac1 madr mali mets nlib noto ohig onsa pama pert pie1 pol2 reyk sant shao stjo thu1 tid2 tidb trom tskb usud vill west wett wtzr yar1 yell zwen

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