Subject: [IGSREPORT-3693] Wk 0901 JPL Analysis Report
From: D C Jefferson
Date: Wed, 30 Apr 1997 13:30:24 PDT

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IGS Electronic Report    Wed Apr 30 13:30:24 PDT 1997      Message Number 3693
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Author: D C Jefferson
Subject: Wk 0901 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0901 (DAYS 103-109, DATES 1997 Apr 13 - Apr 19)
******************************************************************************

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/0901.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09017.sum         This text file.
jpl09017.erp         Earth rotation parameters for GPS week 901.
jpl09017.snx         Ground station coordinates for GPS week 901, SINEX format.
jpl0901[0-6].sp3     GPS ephemerides for GPS week 901, sp3 format.
jpl0901[0-6].tro     Ground station troposphere estimates for GPS week 901.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 14.0 cm

Data from PRN19 did not meet our initial orbit convergence criteria on days
108 and 109.  This satellite has been excluded from these days analyses
accordingly.

Data from PRN28 appeared to be mismodeled in our processing; we have chosen to
exclude it from our analyses for days 105-109.  Although used in the analyses
of days 103 and 104, the solution for this satellite has been removed from the
corresponding orbit products (jpl09010.sp3, jpl09011.sp3).

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 days 103-105.
WARNING: Data from PRN28 excluded days 105-109.
WARNING: Data from PRN19 excluded days 108 and 109.
WARNING: Data from USNA excluded day 103.
WARNING: Data from HVLK, WTZR excluded day 104.
WARNING: Data from CAS1, EBRE, KELY, MAC1, MONP, NYAL, WTZR excluded day 105.
WARNING: Data from LEEP, MONP, NYAL, SANT, WTZR excluded day 107.
WARNING: Data from BOGT, SNI1, WTZR excluded day 108.
WARNING: Data from ONSA, SANT, WTZR excluded day 109.

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 901 (1997 Apr 13 - Apr 19)
     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
50551.50 -17915  37581  -319671  2461    3    4     9      9 37 11 26   54  412 
50552.50 -17903  37940  -322120  2436    3    3     9      9 37 10 26   37  353 
50553.50 -17862  38272  -324545  2415    3    3     9      9 37 10 25   76  292 
50554.50 -17798  38584  -326957  2408    3    3     9      9 37 10 25   99  327 
50555.50 -17732  38885  -329371  2420    3    4     9      9 37  9 25   71  324 
50556.50 -17618  39197  -331775  2388    3    3     9      9 37 10 24   72  306 
50557.50 -17515  39541  -334110  2282    3    4    10     10 37  9 24  116  337 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 901:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 901 (1997 Apr 13 - Apr 19)
      97  4 13   97  4 14   97  4 15   97  4 16   97  4 17   97  4 18   97  4 19
prn   3d rss (cm)
  1      30         25         18         16          5         13          9   
  2      21         18         19         16         21         18         17   
  3      24         19         21         34         35         27         27   
  4      22         18          8         10         22          9          8   
  5      26         28         15          9         13         11         12   
  6      17         15         10         13         10          7         17   
  7      19         20          9          8         19         18         10   
  9      34         23         15         28         42         19         13   
 10      25         12         14         13         23         25         12   
 14       9         24         10         20         11         14         10   
 15       9         11         21         25         11         11         11   
 16      20          9         12         13         14          8          9   
 17      20         14         14         19         18         12         13   
 18      11         15         12         14         11          9          5   
 19       8         18         14         12          5                         
 21      23         28         16         11         20         17         17   
 22      14         12         11          6          8          6          8   
 23      24         27         14         11         17         14         24   
 24      18         14         12         12         14          9          8   
 25      17         14          8         10          8          9          9   
 26      16         10         11          8          8         18         16   
 27      19         34         23         18          9         20         24   
 28     394         95                                                          
 29      15         28         15         10          6          6          6   
 30      21         19          7          9          8         10          7   
 31      19         17         13         19         11         13         15   
_______________________
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 901 (1997 Apr 13 - Apr 19)
 receiver/transmitter (dot means point positioned, * means fiducial site)
 |     days analyzed
 |     |      rms clock noise (ns)
 |     |      |           average clock solution (us)
 |     |      |           |           rms pseudorange (cm)
 |     |      |           |           |           rms phase (mm)
 |     |      |           |           |           |           average arc (hr)
 |     |      |           |           |           |           |
 |     |      |           |           |   (dot means pcode not analyzed)
 |___  |__    |_______    |_______    |___        |___        |__
ALGO*  7.0    .903e-01   -2.49        43.0        4.16        2.67    
ANKR   3.9    125.       -1.77        61.7        5.00        2.83    
ASC1   7.0    785.       -1.59        63.5        6.19        1.82    
AUCK   7.0    78.7       -1.60        41.0        5.67        2.81    
BAHR   7.0    .481        261.        49.3        5.45        3.66    
BOGT   4.8    .130e+04   -2.01        57.5        7.04        1.74    
BRUS   6.0    .199        3.42        60.0        4.00        3.00    
CAS1   2.0    8.96        .157e+04    38.5        4.92        1.76    
CASA   4.0    .330e+05    74.6        40.3        4.58        2.94    
COCO   6.9    .144e+06   -596.        40.8        7.08        2.75    
CRO1   3.0    145.       -.645        48.0        5.80        2.25    
DAV1   2.6    10.1        .235e+04    31.6        5.10        1.61    
DGAR   6.9    152.       -1.59        65.6        7.88        1.90    
FAIR*  7.0    .193       -1.18        33.0        4.59        2.04    
FLIN   4.0    83.1       -.627        51.0        5.04        2.05    
FORT   7.0    .132       -2.13        51.4        8.04        3.19    
GOL2*  7.0    9.87       -1.56        45.3        5.05        3.05    
GUAM   7.0    123.       -1.60        62.1        9.03        2.46    
HART*  7.0    .177e+04    3.59        45.7        6.48        2.50    
IISC   5.5    97.1       -1.87        72.8        5.83        2.48    
IRKT   5.9    87.5       -1.35        61.6        5.00        2.90    
KERG   4.9    139.        112.          .         5.81        2.49    
KOKB*  6.8    160.       -1.55        72.0        6.00        1.90    
KOSG*  7.0    3.37       -22.6        40.0        3.88        2.63    
KWJ1   7.0    109.       -1.59        71.9        7.90        1.59    
LAMA    .9    17.1       -20.7        53.0        4.00        2.61    
LHAS   5.1    166.       -1.59        67.7        5.07        2.50    
MAC1   3.6    84.2       -1.19        30.2        5.00        1.94    
MADR*  6.9    .128       -3.52          .         6.59        2.61    
MALI   7.0    50.0       -736.          .         10.1        2.33    
MAS1   7.0    173.       -.743        41.8        5.15        2.52    
MCM4   7.0    92.7       -1.59        35.7        5.21        1.89    
MDVO   1.8    .548e+05    770.        66.5        6.00        2.57    
MKEA   7.0    .917e-01   -1.61        46.8        6.45        2.45    
NLIB   2.9    .           .           47.3        4.36        2.63    
OHIG   1.8    .236e+04   -1.87        63.5        5.00        1.81    
PERT   7.0    2.89       -14.4        52.9        5.03        3.06    
RCM6   4.0    92.0       -1.72        65.0        5.77        2.61    
REYK   6.0    77.4       -1.38        56.2        6.19        1.97    
SANT*  4.2    .126e+04   -1.42        40.9        5.73        1.79    
STJO   3.0    3.18        .476        40.1        4.00        2.87    
TAHI   2.0    131.       -2.88        79.0        10.1        2.46    
TIDB   4.9    .113       -.369          .         5.64        2.67    
USUD   7.0    3.61        1.82        36.5        4.46        2.98    
WTZR*  1.0    .887e-01   -2.67        60.0        5.00        2.51    
WUHN   3.9    .201e+06   -862.        43.0        5.81        2.67    
XIAN   1.0    92.7       -.500        41.0        5.00        3.08    
YAR1*  6.9    3.87       -1.58          .         5.54        2.45    
YELL*  7.0    .359       -1.56        42.8        5.15        1.60    
PRN01  7.0    78.7        15.9        52.2        5.89        2.26    
PRN02  7.0    79.4       -356.        55.3        6.02        2.36    
PRN03  7.0    79.4        3.11        52.5        5.60        2.45    
PRN04  7.0    79.7        21.4        50.9        6.47        2.63    
PRN05  6.8    83.0        90.7        50.5        5.30        2.73    
PRN06  7.0    81.1        2.89        48.3        6.01        2.78    
PRN07  7.0    82.1        741.        51.3        6.20        2.23    
PRN09  6.7    79.1       -36.3        54.4        5.89        2.20    
PRN10  7.0    80.3        5.04        52.7        5.87        2.39    
PRN14  6.9    80.8        16.6        51.6        6.00        2.24    
PRN15  7.0    3.37        413.        55.3        6.02        2.21    
PRN16  7.0    80.4        6.55        51.9        5.87        2.30    
PRN17  7.0    81.8       -148.        52.8        5.44        2.20    
PRN18  7.0    79.0        24.0        48.6        6.02        2.48    
PRN19  4.7    81.2        235.        54.8        6.24        2.28    
PRN21  7.0    79.2        45.2        55.6        5.87        2.25    
PRN22  7.0    80.8        383.        49.6        5.87        2.57    
PRN23  7.0    80.4        10.2        51.4        5.45        2.21    
PRN24  7.0    81.2        352.        53.4        5.75        2.60    
PRN25  6.8    78.4       -6.78        51.4        6.61        1.95    
PRN26  7.0    80.5       -157.        52.9        5.86        2.23    
PRN27  6.6    83.1        23.8        54.1        8.58        2.36    
PRN29  7.0    79.8        7.51        51.0        5.59        2.30    
PRN30  7.0    79.4       -50.5        50.3        5.30        2.69    
PRN31  7.0    78.2        308.        52.5        5.46        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
      97  4 13   97  4 14   97  4 15   97  4 16   97  4 17   97  4 18   97  4 19
prn   3d rss (cm)
  1     425        334        320        331        346        314        273   
  2     230        506        362        416        374        480        628   
  3     269        292        404        316        360        324        331   
  4     548        444        620        571        966        457        501   
  5     379        351        305        331        384        444        431   
  6     639        612        501        511        468        456        605   
  7     658        369        377        495        557        398        475   
  9     897        948        662        499        667        534        387   
 10     301        478        421        689        595        310        235   
 14     434        479        829        473        577        558        508   
 15     436        367        270        321        303        250        259   
 16     403        583        204        228        661        883        259   
 17     236        337        285        399        421        419        279   
 18     647        250        316        361        460        452        349   
 19     392        606        169        290        865                         
 21     176        218        256        240        204        250        176   
 22     414        760        474        401        436        473        468   
 23     665        537        316        313        183        211        330   
 24     349        270        561        465        291        303        340   
 25     607        430        407        327        301        313        251   
 26     417        184        161        192        156        202        321   
 27     324        308        408        344        630        461        651   
 28     485        301                                                          
 29     274        393        351        371        311        293        190   
 30     221        385        700        692        294        317        254   
 31     224        283        272        318        334        489        537   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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