Subject: [IGSREPORT-4639] Wk 0944 JPL Analysis Report
From: D C Jefferson
Date: Tue, 24 Feb 1998 11:34:16 PST

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IGS Electronic Report    Tue Feb 24 11:34:16 PST 1998      Message Number 4639
******************************************************************************

Author: D C Jefferson
Subject: Wk 0944 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0944 (DAYS 39-45, DATES 1998 Feb 08 - Feb 14)
******************************************************************************

Submitted by the JPL IGS/FLINN Analysis Team:

D C Jefferson, Y E Bar-Sever, M B Heflin, M M Watkins, F H Webb, J F Zumberge

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 (137.78.60.30),
directory pub/jpligsac/0944.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09447.sum         This text file.
jpl09447.erp         Earth rotation parameters for GPS week 944.
jpl09447.snx         Ground station coordinates for GPS week 944, SINEX format.
jpl0944[0-6].sp3     GPS ephemerides for GPS week 944, sp3 format.
jpl0944[0-6].tro     Ground station troposphere estimates for GPS week 944.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 12.0 cm

We continue to exclude data from PRN13 and deweight all data from PRN08 this
week.  Also, data from PRN29 were mismodeled on day 039, and we have elected
to deweight these data on this day 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: USNO (not NRC1) used as reference clock days 040-042.
WARNING: Data from PRN08 deweighted the entire GPS week 944.
WARNING: Data from PRN13 excluded the entire GPS week 944.
WARNING: Data from PRN29 deweighted day 039.
WARNING: Data from KELY, KOKB excluded day 039.
WARNING: Data from CRO1, SANT excluded day 040.
WARNING: Data from CRO1 excluded day 041.
WARNING: Data from CRO1 excluded day 042.
WARNING: Data from TAHI excluded day 043.
WARNING: Data from KELY excluded day 045.

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 944 (1998 Feb 08 - Feb 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
50852.50  -1117  17507   138819  2295    4    4    10     10 37 10 26 -258  -13 
50853.50  -1343  17531   136559  2226    3    4    10     10 37  9 26 -273  -21 
50854.50  -1635  17524   134387  2118    4    4    10     10 37 10 26 -307  -37 
50855.50  -1923  17569   132314  2027    4    4    11     11 37  8 26 -270   13 
50856.50  -2158  17554   130280  2041    4    5    11     11 37  9 26 -267   77 
50857.50  -2369  17610   128240  2039    6    6    11     11 37  8 26 -244    0 
50858.50  -2582  17693   126217  2007    4    5    10     10 36  8 26 -196    1 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 944:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 944 (1998 Feb 08 - Feb 14)
      98  2  8   98  2  9   98  2 10   98  2 11   98  2 12   98  2 13   98  2 14
prn   3d rss (cm)
  1      12          5          9          9         10         12         14   
  2       8         11         10         10          8         16         11   
  3      18         13         10         12         15         19         16   
  4       6          7          8         10         16         16         12   
  5      12         10          7         11         15          9         11   
  6      11          9         23         20          7         14         20   
  7       7          8         10         18         18         12         10   
  8      25         44         35         39         43         72         95   
  9      19         10         10         12         16         12         16   
 10      12          7         15         21         23         15         17   
 14      25          9          8          9         12         12         10   
 15       8         11          9         11          8         11         10   
 16      10          7         12          6         13          9         10   
 17      14         14         13         16         18         12          8   
 18       9         12         11         14         15         15         18   
 19      16         12          6         12         14         11         27   
 21      10         17         17         14         18          9         10   
 22      16         18          6          8         20         15         10   
 23      17         21         23         24         23         25         22   
 24       8          6          9         14         40         15         20   
 25      13         11         10         10         18         12          9   
 26       9          9         11         12         20         43         14   
 27       9          7         18         20         16         16         15   
 29     806        350          4         11          9          9          9   
 30       6         11         10         10         31         10         13   
 31      15         14          6          8         11         12         22   
_______________________
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 944 (1998 Feb 08 - Feb 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)
 |     |      |           |           |           |           |
 |___  |__    |_______    |_______    |___        |___        |__
ALBH    .9    3.18        .614        44.0        5.00        2.53    
ALGO*  5.9    .102        8.63        48.5        4.04        2.95    
ANKR   4.6    143.       -.275e-01    59.7        4.46        2.89    
AREQ   3.9    92.4       -.550e-01    50.0        4.28        2.27    
ASC1   4.6    .436e+04   -.813e-02    84.0        4.65        1.44    
BAHR   5.9    .533        233.        46.0        5.39        2.92    
BRMU    .9    85.8        .149        37.0        5.00        2.80    
BRUS   1.0    .145        8.25        60.0        4.00        2.58    
CAS1    .9    .795e+07   -.269e+05    39.0        5.00        1.26    
CASA    .8    8.65        5.89        53.0        5.00        2.88    
CHAT   7.0    104.       -.300e-01    76.3        5.03        2.74    
CHUR   1.0    3.52       -4.00        42.0        5.00        1.25    
CRO1   2.6    142.        .124        45.4        5.00        1.89    
DAV1   4.8    137.        .813e-01      .         4.63        1.20    
DGAR   5.8    994.       -.457e-01    73.1        5.68        1.62    
DRAO   2.0    .718e-01   -.377        32.5        4.00        2.84    
EISL   4.8    882.       -.104        46.6        5.63        2.73    
FAIR*  6.7    .112       -.522        38.0        4.43        2.24    
FLIN   3.0    92.1       -.111        44.0        4.00        2.56    
FORT   4.5    .228       -.894e-01    69.2        6.44        1.52    
GOL2*  5.7    .279        .810        66.7        4.19        2.07    
GRAZ   2.0    .744       -.692e-01    61.5        4.00        2.59    
GUAM   7.0    112.       -.307e-01    58.1        6.00        1.84    
HARK   5.0    25.8       -8.68        55.4        5.21        2.47    
HOB2   1.0    85.6        .126        53.0        6.00        2.82    
HRAO   1.7    68.4       -.402e-01    47.3        4.56        2.57    
IISC   4.9    114.       -.900e-01    70.1        5.00        2.22    
IRKT   7.0    .254        .410        47.9        4.31        2.52    
KERG   4.6    342.        .126e+04      .         5.41        2.56    
KIRU   2.0    12.7        4.50        51.0        6.00        1.91    
KIT3   4.5    478.       -.107        55.8        4.47        2.88    
KOKB*  4.8    .278       -17.8        67.4        5.00        2.34    
KOSG*  7.0    5.86       -20.4        42.7        3.65        2.40    
KOUR   3.0    2.21        1.51          .         6.68        1.47    
KWJ1   3.8    125.       -.137        59.3        5.75        1.82    
LHAS   4.7    90.8        .155e-01    47.0        4.00        2.74    
MAC1   4.5    83.7       -.117e-01    45.8        4.60        2.26    
MAD2*  5.8    .102e+04   -2.28        70.1        5.70        1.93    
MALI   5.9    34.0       -215.          .         6.68        1.92    
MAS1   5.0    76.9        .363        45.6        4.22        2.48    
MDVO   3.9    17.3        233.        65.3        6.00        1.78    
METS    .9    .848e-01   -.584        34.0        3.00        2.44    
MKEA   3.8    18.9       -.272        54.9        5.00        2.42    
MOIN   2.7    99.0       -.945e-01    63.1        6.00        1.76    
NRC1   4.1    .           .           58.7        3.54        2.97    
OHIG   5.7    .329e+05    3.56        55.5        4.32        1.09    
PERT   7.0    2.51       -.156        48.9        4.46        2.68    
PIE1    .9    .621e-01   -.602        54.0        4.00        2.34    
RCM6   1.9    93.0        .137        92.3        5.00        2.82    
REYK   7.0    79.7       -.258e-01    58.3        6.00        1.72    
SANT*  2.1    .130e+04   -2.19        50.0        4.38        1.09    
STJO   6.0    190.        .788        35.7        4.35        2.46    
TAHI   3.6    146.       -.676e-01    82.4        6.54        2.57    
TID2*  5.7    17.7       -.932e-01    38.0        5.00        2.51    
TSKB   1.0    2.39       -1.34        41.0        5.00        2.96    
USNO   3.1    .           .           55.3        5.00        2.80    
USUD   5.8    383.       -.558        43.7        5.08        2.86    
WTZR*  7.0    .102        1.53        61.0        4.45        2.68    
WUHN   4.8    6.48       -460.        47.2        4.44        2.31    
YAR1*  1.7    92.8       -.552e-01      .         3.56        2.15    
YELL*  7.0    .147e+04   -10.4        38.6        4.46        1.53    
PRN01  6.6    79.2        39.3        54.9        5.00        2.26    
PRN02  6.9    82.9       -454.        58.7        4.87        2.27    
PRN03  6.6    81.3        98.4        57.3        5.00        2.16    
PRN04  7.0    79.0        11.2        54.8        5.00        2.17    
PRN05  7.0    82.0        135.        53.4        5.00        2.42    
PRN06  6.8    82.4       -.387        53.8        5.30        2.03    
PRN07  6.7    77.2        768.        59.5        5.00        2.29    
PRN09  7.0    80.9       -29.7        57.2        5.00        2.41    
PRN10  6.9    82.0        18.4        54.6        5.00        2.17    
PRN14  7.0    82.0        26.5        51.7        5.00        2.41    
PRN15  7.0    3.02        522.        56.5        5.00        2.31    
PRN16  7.0    82.6        48.8        54.7        4.87        2.32    
PRN17  7.0    81.7       -173.        56.4        5.00        2.13    
PRN18  6.6    79.4        10.9        56.4        5.16        2.10    
PRN19  6.7    79.7        374.        59.3        4.87        2.08    
PRN21  7.0    79.1        22.5        56.2        5.00        2.12    
PRN22  7.0    79.0        46.0        54.6        5.16        2.40    
PRN23  7.0    80.9        9.71        53.3        5.00        2.21    
PRN24  7.0    79.7        776.        57.0        4.87        2.44    
PRN25  7.0    80.9       -6.87        52.5        4.87        2.13    
PRN26  6.8    80.7       -89.8        54.1        5.00        2.17    
PRN27  6.8    80.8        17.4        58.3        5.00        2.23    
PRN29  5.7    78.9        166.        53.7        4.85        2.48    
PRN30  7.0    82.2       -24.8        54.5        5.15        2.41    
PRN31  6.6    81.9        1.10        56.1        5.00        2.14    
_______________________
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
      98  2  8   98  2  9   98  2 10   98  2 11   98  2 12   98  2 13   98  2 14
prn   3d rss (cm)
  1     251        418        426        642       1015        331        364   
  2     202        160        289        256        325        242        327   
  3     525        629        470        221        231        275        263   
  4     292        224        207        284        280        231        207   
  5     199        294        388        572        395        372        433   
  6     591        450        536        596        541        585        605   
  7     458        368        347        393        332        485        509   
  8     327        518        449        350        473       1059        541   
  9     275        142        250        183        163        157        207   
 10     352        344        330        383        887        737        437   
 14     941        347        613        493        693       1121        515   
 15     483        279        466        193        270        202        212   
 16     812        992        747       1060        676        923        638   
 17     460        562        651        573        470        590        591   
 18     554        464        360        260        585        672        452   
 19     400        269        231        441        284       1335        550   
 21     231        490        648        469        563        328        409   
 22     486        830        322        387        645        569        515   
 23     412        693        872        613       1225       1362        394   
 24     271        415        345        203        348       1470       1268   
 25     244        289        781        307        381        313        299   
 26     151        252        634        304        260        307        272   
 27     836        419        240        279        151        181        165   
 29    1040        430        200        267        446        306        475   
 30     420        225        200        318        533        260        273   
 31     285        454        603        252        329        435        366   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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