Subject: [IGSREPORT-4687] Wk 0946 JPL Analysis Report
From: D C Jefferson
Date: Tue, 10 Mar 1998 14:18:43 PST

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IGS Electronic Report    Tue Mar 10 14:18:43 PST 1998      Message Number 4687
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Author: D C Jefferson
Subject: Wk 0946 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0946 (DAYS 53-59, DATES 1998 Feb 22 - Feb 28)
******************************************************************************

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/0946.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09467.sum         This text file.
jpl09467.erp         Earth rotation parameters for GPS week 946.
jpl09467.snx         Ground station coordinates for GPS week 946, SINEX format.
jpl0946[0-6].sp3     GPS ephemerides for GPS week 946, sp3 format.
jpl0946[0-6].tro     Ground station troposphere estimates for GPS week 946.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 11.0 cm

We continue to exclude data from PRN13 and deweight all data from PRN08
this week.  Also, as solutions for day 060 are not currently available,
orbit repeatabilities for day 059 are reflective of comparisons with the
previous day (058) 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: MKEA (not NRC1) used as reference clock days 055-057.
WARNING: USNO (not NRC1) used as reference clock days 058 and 059.
WARNING: Data from PRN08 deweighted the entire GPS week 946.
WARNING: Data from PRN13 excluded the entire GPS week 946.
WARNING: Data from CRO1 excluded day 053.
WARNING: Data from CRO1 excluded day 054.
WARNING: Data from KERG, ROCH excluded day 055.
WARNING: Data from IISC, ROCH excluded day 056.
WARNING: Data from CAT1, TAHI excluded day 057.
WARNING: Data from CAT1 excluded day 058.
WARNING: Data from CAT1 excluded day 059.

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 946 (1998 Feb 22 - Feb 28)
     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
50866.50  -4652  18647   109952  2087    3    3    10     10 37 11 26 -335   45 
50867.50  -4937  18747   107867  2084    3    3    10     10 37 11 26 -297   64 
50868.50  -5189  18838   105763  2124    3    3    10     10 37 10 26 -258   60 
50869.50  -5462  18926   103672  2058    4    3    11     11 37 11 26 -240   62 
50870.50  -5685  18984   101649  1988    3    3    10     10 37 11 26 -222   37 
50871.50  -5822  19103    99586  2137    3    4    10     10 37 11 26 -186  120 
50872.50  -5911  19257    97411  2214    3    4    10     10 37 11 26 -146  109 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 946:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 946 (1998 Feb 22 - Feb 28)
      98  2 22   98  2 23   98  2 24   98  2 25   98  2 26   98  2 27   98  2 28
prn   3d rss (cm)
  1       8          9          9          7         13         14         24   
  2      12         12         16          9         21         12          5   
  3       8          8         11         10          9          9         10   
  4      15          5          8         14         10         10          6   
  5       8          8          8          9          9         10          9   
  6      11          7         14         12         14          9         10   
  7      11          8          9         18         15         17         12   
  8      40         34         44         47         43         46         45   
  9      10          8          9          8          8         10         15   
 10       6          4         16         13         10         14         10   
 14      16          9         15         13          7         10         15   
 15      14         11         15          8          7         14         10   
 16      11          7          5          7          7         10         12   
 17      22         17         20         14         12         21          7   
 18      25         15         16         19         14         17         12   
 19      10         14         14         14         44         31         18   
 21       9         11         10          5          7         12         22   
 22       7         11         11          7          7         18          7   
 23      14         13         13         21         13         17         13   
 24      12          6          9          7          9          8          8   
 25       7          5          7         19          6         14         16   
 26      16          8         14         10         11          8         14   
 27      15         18         23          8         12         22         17   
 29      17          6         19         33         23         10         16   
 30       8          6          9          9         11         10          6   
 31      10         14         28         15         20         16         12   
_______________________
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 946 (1998 Feb 22 - Feb 28)
 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)
 |     |      |           |           |           |           |
 |___  |__    |_______    |_______    |___        |___        |__
ALGO*  4.2    .673e-01    9.59        50.6        3.96        2.68    
AREQ*  2.0    94.2       -.706        61.0        5.00        1.89    
ASC1   4.3    .185e+04   -.606        73.4        5.03        1.46    
BAHR   7.0    2.29        233.        45.6        4.74        3.04    
BOGT   4.5    127.       -.912        62.0        5.81        1.70    
CAS1   6.9    .591e+07   -.124e+05    37.4        5.86        1.32    
CASA   2.0    9.79        48.2        97.0        10.5        1.95    
CHAT   6.9    104.       -.685        79.8        6.01        2.78    
COCO   5.9    88.2       -.107e+05    45.9        5.00        2.96    
DGAR   6.5    729.       -.691        73.1        6.25        1.52    
EISL   7.0    119.       -.662        53.2        5.44        2.74    
FAIR*  7.0    .865e-01   -.731        36.4        4.15        2.28    
FLIN   1.0    82.3       -.253e-01    45.0        3.00        2.44    
FORT*  2.2    .784e-01   -.986        77.5        6.40        1.30    
GOL2*  6.9    290.       -2.79        81.3        4.08        1.89    
GUAM*  7.0    110.       -.675        62.7        5.75        2.06    
HARK*  1.0    4.77       -4.96        54.0        5.00        2.73    
HARV   2.0    .839e+07    .170e+05    72.1        6.53        2.39    
HRAO   5.8    75.0       -.537        50.2        5.00        2.66    
IISC   3.7    357.       -.800        76.0        5.55        2.14    
IRKT*  4.9    .240       -.501        53.4        4.64        2.57    
KELY   1.3    .267e+04   -2.08          .         5.00        1.50    
KERG*  5.9    .259e+04    .147e+04      .         5.18        2.47    
KIRU   1.0    2.30        2.80        59.0        6.00        2.06    
KIT3*  2.8    106.       -.583        61.3        4.34        2.88    
KOKB*  7.0    .113       -18.3        65.3        5.15        2.54    
KOSG*  7.0    6.15       -28.1        42.5        3.87        2.48    
KOUR*  2.7    999.        1.42        78.0        6.00        1.39    
KWJ1*  7.0    110.       -.669        69.0        5.59        2.02    
LHAS*  6.8    96.7       -.654        50.7        4.62        2.79    
LPGS    .8    307.       -1.30        59.0        5.00        1.84    
MAC1*  6.9    82.4       -.666        45.7        4.00        2.53    
MAD2*  6.9    .145e+04   -.880        59.5        5.31        2.18    
MALI*  5.8    68.6       -398.        81.5        6.52        1.91    
MCM4   2.7    90.4       -.545        43.8        5.00        1.06    
MDVO   2.0    .522        460.        66.5        6.00        1.87    
METS   1.9    135.       -1.42        77.6        3.51        2.18    
MKEA   6.9    .238        1.24        59.4        4.59        2.45    
NICO   1.8    75.9       -.424e-01    44.6        4.00        2.38    
NLIB*  1.0    .108       -.840        52.0        5.00        2.90    
NRC1   2.1    .           .           62.0        4.00        2.90    
ONSA*  1.0    .126        3.82        46.0        4.00        2.11    
PERT*  2.9    2.31       -2.81        52.0        4.33        2.68    
POL2    .9    83.5       -.434e-01    43.0        3.00        2.59    
RCM6   2.0    93.6       -1.37        90.5        4.53        2.55    
REYK   4.0    81.6       -.413        60.0        6.27        2.29    
SANT*  5.4    597.       -.621        46.0        4.70        1.34    
STJO   2.0    2.75        1.12        53.3        4.49        2.49    
TAHI   4.2    .113e+04   -.382        80.1        6.03        2.41    
TID2*  6.8    206.       -.801        39.6        5.16        2.36    
USNO   2.1    .           .           59.5        6.00        2.95    
USUD   7.0    .735       -1.82        43.9        4.46        2.84    
WES2    .2    .438e-01   -1.20        56.0        4.00        1.33    
WTZR*  7.0    .113        1.16        62.9        4.16        2.68    
WUHN   5.7    6.24       -606.        47.3        4.87        2.49    
YAR1*  6.7    99.8       -.684        39.0        4.31        2.32    
YELL*  4.3    64.0       -7.05        43.7        4.26        1.42    
PRN01  6.7    82.4        39.9        56.0        5.48        2.23    
PRN02  7.0    81.0       -460.        62.6        5.00        2.29    
PRN03  7.0    82.2        102.        60.2        5.00        2.25    
PRN04  7.0    79.1        13.0        60.4        5.00        2.15    
PRN05  7.0    81.2        137.        55.8        4.86        2.62    
PRN06  7.0    83.1       -1.03        58.9        5.00        2.18    
PRN07  7.0    78.7        769.        60.4        5.00        2.23    
PRN09  7.0    81.1       -32.0        60.1        5.16        2.15    
PRN10  7.0    80.5        18.3        58.5        5.00        2.16    
PRN14  7.0    81.5        26.5        51.1        5.00        2.50    
PRN15  7.0    2.96        527.        57.3        5.00        2.36    
PRN16  7.0    81.8        50.1        57.1        5.00        2.35    
PRN17  7.0    80.5       -175.        61.1        5.00        2.06    
PRN18  6.6    79.5        10.6        57.4        5.36        2.08    
PRN19  6.9    81.9        379.        58.1        5.00        2.12    
PRN21  7.0    79.6        24.5        56.9        5.16        2.32    
PRN22  6.9    82.5        47.8        55.9        5.00        2.35    
PRN23  7.0    80.0        9.60        56.4        5.00        2.46    
PRN24  7.0    81.4        793.        64.5        5.16        2.37    
PRN25  7.0    80.8       -7.50        54.2        5.00        2.15    
PRN26  6.8    80.9       -98.9        57.5        5.16        2.10    
PRN27  7.0    82.3        18.4        61.4        5.00        2.22    
PRN29  6.6    80.4        229.        56.6        5.30        2.39    
PRN30  7.0    80.7       -27.6        56.7        5.00        2.33    
PRN31  7.0    81.5        .858        58.0        5.00        2.32    
_______________________
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 22   98  2 23   98  2 24   98  2 25   98  2 26   98  2 27   98  2 28
prn   3d rss (cm)
  1     336        408        403        276        418        469        297   
  2     249        131        230        134        165        302        370   
  3     249        335        482        458        426        349        223   
  4     424        375        384        554        442        224        260   
  5     326        325        270        381        364        268        195   
  6     757        968        997        858        634        636        609   
  7     326        309        412        322        666        313        571   
  8     914        405        319        600        636        246        399   
  9     186        393        366        228        165        166        364   
 10     516        542        492        469        246        554        461   
 14     475        755        659       1012        538        816        763   
 15     218        310        256        242        173        296        380   
 16     740        687        320        463        798        604        517   
 17     570        364        501        358        286        392        300   
 18    1219       1224        519        652        479        335        314   
 19     478        403        183        136        362        499        434   
 21     440        358        209        191        326        255        241   
 22     587        576        590        471        406        361        413   
 23     399        400        642        471        800       1163       1125   
 24     732        521        402        567        473        263        329   
 25     395        395        202        223        238        320        541   
 26     716        469        291        182        334        578        488   
 27     415        272        342        292        420        245        195   
 29     321        411        821        429        498        392        455   
 30     449        206        200        220        224        254        268   
 31     376        247        247        242        335        450        212   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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