Subject: [IGSREPORT-4618] Wk 0943 JPL Analysis Report
From: D C Jefferson
Date: Wed, 18 Feb 1998 22:56:01 PST

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IGS Electronic Report    Wed Feb 18 22:56:01 PST 1998      Message Number 4618
******************************************************************************

Author: D C Jefferson
Subject: Wk 0943 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0943 (DAYS 32-38, DATES 1998 Feb 01 - Feb 07)
******************************************************************************

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/0943.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09437.sum         This text file.
jpl09437.erp         Earth rotation parameters for GPS week 943.
jpl09437.snx         Ground station coordinates for GPS week 943, SINEX format.
jpl0943[0-6].sp3     GPS ephemerides for GPS week 943, sp3 format.
jpl0943[0-6].tro     Ground station troposphere estimates for GPS week 943.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 11.0 cm
                           (excluding deweighted satellites)

We continue to exclude all data from PRN13, and deweight all data from PRN08
this week.  Also, PRN40 and PRN24 were mismodeled on days 032 and 036 
respectively.  We have chosen to deweight data from these satellites on
the corresponding days.  [Note that the large overlap for PRN29 on day 038
is reflective of mismodeling on the following day 039 (week 944, day 0)].

Beginning this week we add five new candidate stations.  As with other
sites, these stations 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)
HOFN (Hoefn, Iceland)               2679690.0637   -727951.3362   5722789.2816
NANO (Nanoose Bay, B.C., Canada)   -2335726.7490  -3451608.2840   4812009.9840
NOUM (Noumea, New Caledonia)       -5739971.4540   1387563.7220  -2402123.7010
UCLU (Ucluelet, B.C., Canada)      -2440669.0610  -3416437.0100   4785136.8470
WSLR (Whistler, B.C., Canada)      -2227013.6200  -3439649.0600   4872522.2500

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 day 032.
WARNING: Data from PRN13 excluded the entire GPS week 943.
WARNING: Data from PRN08 deweighted the entire GPS week 943.
WARNING: Data from PRN40 deweighted day 032.
WARNING: Data from PRN24 deweighted day 036.
WARNING: Data from POTS excluded day 032.
WARNING: Data from BARB, POTS excluded day 033.
WARNING: Data from POTS excluded day 034.
WARNING: Data from HOFN excluded day 035.
WARNING: Data from WES2 excluded day 036.
WARNING: Data from WUHN excluded day 037.

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 943 (1998 Feb 01 - Feb 07)
     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
50845.50    957  16988   154710  2070    3    4    10     10 37 10 26 -283   19 
50846.50    710  17022   152592  2165    5    5     9      9 37  8 26 -301   54 
50847.50    313  17157   150378  2264    3    3     9      9 37 10 26 -315   87 
50848.50    -19  17212   148088  2315    3    3    10     10 37 10 26 -329   47 
50849.50   -346  17279   145765  2332    3    4    10     10 37 10 26 -296   25 
50850.50   -624  17361   143461  2275    3    4    10     10 37 10 26 -276   72 
50851.50   -871  17432   141145  2357    4    4    10     10 37  7 26 -280   37 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 943:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 943 (1998 Feb 01 - Feb 07)
      98  2  1   98  2  2   98  2  3   98  2  4   98  2  5   98  2  6   98  2  7
prn   3d rss (cm)
  1       6         12         10          9          7          8         10   
  2      11         12         10          5         11          8          8   
  3      17         17         10          6         11         12         15   
  4      12          8         10          7         15          8          9   
  5      14          8         13          7          7          8          8   
  6      16         14         13         16         20         12         11   
  7      18         10         10          5         13          9         17   
  8      36         22         37         38         25         39         18   
  9       8          8         16         10          6          7         17   
 10     107         72         10         12         28          8         12   
 14      14         12         19          9         20         12          7   
 15      11         16         13          8          8         10          8   
 16      10         27         20          8         12         10         11   
 17      11          9         10         10          9          7         12   
 18      24         12         12         14          8         10         12   
 19      13         14         14         12         12         16         11   
 21       8         13          7          7          8         11         12   
 22      17         16         15          9         21         25         12   
 23      11          8         14         11          9         10         13   
 24      16         12         12        392         93         78         10   
 25       8         12         10         12          7          9         10   
 26      24         14         19         11         38          7          9   
 27      11         12         11         12         16         18         12   
 29       8         12         10         14          6          6        718   
 30      24         12         10          6          6          6          8   
 31      16         18         11         15          9         13         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 943 (1998 Feb 01 - Feb 07)
 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*  7.0    .755e-01    8.07        49.9        4.22        3.02    
ANKR   1.8    150.       -.967e-01    59.0        4.00        2.95    
AREQ   7.0    89.7        .542e-01    46.0        4.60        2.34    
ASC1   5.7    757.        .243e-01    79.7        5.00        1.42    
AUCK   1.9    89.0        .102        41.0        4.55        2.40    
BAHR   7.0    .650        234.        44.9        4.74        3.14    
BRMU   1.0    93.5        .930e-01    37.0        4.00        2.93    
CAS1   4.5    .527e+07   -.150e+05    39.4        5.80        1.44    
CASA   1.0    3.81        109.        37.0        5.00        2.84    
CHAT   3.9    105.        .721e-02    79.8        5.00        2.72    
CHUR   1.0    2.75       -3.47        36.0        5.00        1.78    
COCO    .7    73.3       -.747e+04    47.0        5.00        2.54    
CRO1   7.0    138.        .579e-01    44.7        5.34        1.99    
DAV1    .9    144.        .126          .         5.00        1.50    
DGAR   7.0    294.        .371e-01    75.5        5.61        1.53    
DRAO   1.0    .458e-01   -.186        35.0        4.00        2.64    
EISL   6.6    253.        .351e-01    48.5        5.71        2.47    
FAIR*  5.9    .936e-01   -.369        36.7        4.18        2.24    
FLIN   4.0    84.1        .931e-01    41.8        3.00        2.49    
FORT   4.8    .193       -.163        65.9        6.86        1.43    
GOL2*  5.8    .150        .781        76.4        4.19        2.02    
GRAZ   2.0    .714       -.460e-01    60.0        3.54        2.64    
GUAM   6.9    305.        .586e-01    58.1        6.44        1.98    
HARK   4.6    14.6       -6.87        56.0        4.80        2.59    
IISC   5.9    82.3        .341e-01    67.7        5.00        2.49    
IRKT   3.8    .157        .471        46.3        5.00        2.51    
KERG   2.7    .199e+04    .123e+04      .         6.00        2.57    
KIRU   3.0    3.08        4.38        51.3        6.00        2.19    
KIT3   2.8    99.1        .943e-01    58.0        4.00        2.91    
KOKB*  5.9    .352e+05   -233.        61.2        5.35        2.34    
KOSG*  5.9    2.05       -15.2        41.2        3.71        2.53    
KOUR   5.0    2.78        1.28          .         5.21        1.44    
KWJ1   6.8    117.        .418e-01    61.1        5.88        1.72    
MAC1   3.5    84.2        .913e-01    46.8        4.22        2.44    
MAD2*  7.0    381.        .895        75.9        6.73        2.28    
MALI   7.0    31.5       -129.          .         6.16        2.04    
MAS1   3.0    108.        .551        44.0        5.06        2.31    
MDVO   3.7    .282e+04    224.        65.2        5.50        1.80    
METS   1.0    .170       -.202        36.0        3.00        2.18    
MKEA   3.7    .666e-01    .159e-01    54.9        4.50        2.43    
NLIB   1.0    .515e-01    1.34        48.0        4.00        2.78    
NRC1   6.2    .           .           51.7        3.19        2.98    
OHIG   3.5    .297e+05   -.820        58.5        4.52        1.17    
PERT   7.0    .182e+04   -9.24        49.1        4.73        2.58    
POL2   2.8    77.6       -.188e-01    73.0        3.68        2.54    
RCM6   6.0    220.        .102        64.2        5.08        2.58    
REYK   7.0    78.8        .511e-01    57.9        6.16        2.07    
SANT*  5.6    .131e+04   -.517        43.9        4.30        1.17    
SHAO   1.9    79.8        .940e-01    43.6        4.00        2.33    
STJO   6.0    2.77        .719        60.9        4.18        2.57    
TAHI    .6    320.        .297e-01    68.0        6.00        2.10    
TID2*  6.0    .761e-01   -.774e-01    37.7        6.18        2.66    
TSKB   1.0    1.61       -1.29        42.0        4.00        2.87    
USNO   1.0    .           .           54.0        5.00        2.44    
USUD   5.0    .718        1.34        46.5        5.42        2.79    
WHIT   1.0    93.5        .985e-01    32.0        3.00        2.60    
WTZR*  7.0    .108        1.49        63.0        4.31        2.68    
WUHN   3.9    4.54       -372.        47.2        4.77        2.35    
XIAN   1.0    88.6        .988e-01    56.0        4.00        2.69    
YELL*  7.0    16.9       -11.5        37.9        4.29        1.87    
ZWEN   1.0    76.1       -.238        61.0        5.00        2.52    
PRN01  7.0    81.5        38.8        55.4        5.15        2.35    
PRN02  7.0    78.8       -452.        61.3        4.87        2.44    
PRN03  6.6    80.2        96.3        56.1        5.00        2.23    
PRN04  7.0    80.3        10.0        53.9        5.00        2.21    
PRN05  7.0    81.7        134.        52.5        4.74        2.35    
PRN06  6.8    81.6       -.242        53.0        5.16        2.06    
PRN07  6.7    79.7        768.        61.5        5.00        2.41    
PRN09  7.0    80.0       -28.8        54.3        5.00        2.23    
PRN10  5.9    80.8        18.3        54.0        5.00        2.21    
PRN14  7.0    80.4        26.4        52.3        5.00        2.51    
PRN15  7.0    3.21        520.        57.6        5.00        2.45    
PRN16  7.0    81.7        47.9        56.2        5.00        2.48    
PRN17  7.0    81.9       -173.        57.0        5.00        2.19    
PRN18  6.8    82.0        10.8        56.2        5.00        2.12    
PRN19  7.0    82.4        371.        60.9        4.74        2.03    
PRN21  7.0    82.0        21.3        56.2        5.00        2.22    
PRN22  6.9    81.1        44.8        53.0        5.00        2.21    
PRN23  7.0    81.1        9.48        52.9        5.00        2.21    
PRN24  6.0    79.7        765.        54.5        5.18        2.33    
PRN25  7.0    80.7       -6.78        52.1        5.00        2.16    
PRN26  6.9    81.7       -85.5        54.7        5.00        2.14    
PRN27  7.0    82.4        16.8        57.5        5.00        2.25    
PRN29  6.9    78.3        127.        55.9        5.16        2.66    
PRN30  7.0    82.2       -23.6        53.0        5.00        2.39    
PRN31  6.6    80.8        1.04        57.5        5.16        2.16    
_______________________
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  1   98  2  2   98  2  3   98  2  4   98  2  5   98  2  6   98  2  7
prn   3d rss (cm)
  1     284        262        303        296        614        311        319   
  2     253        330        265        215        709        183        157   
  3     412        411        429        418        482        403        375   
  4     518        564        367        520        437        590        597   
  5     418        303        325        267        276        245        247   
  6     673        441        553        462        416        419        446   
  7     747        488        294        293        541        501        368   
  8     593        343        217        554        357        284        304   
  9     397        312        389        357        202        184        354   
 10     508        520        506        331        599        642        381   
 14     518        444        338        339        309        329        455   
 15     279        515        244        266        281        388        528   
 16     526        704        693        436        858       1423        524   
 17     566        405        378        544        517        457        615   
 18    1508        578        451        471        499        527        506   
 19     145        121        562        223        292        200        184   
 21     354        396        439        571        365        342        309   
 22     647        231        417        916        378        224        438   
 23    1018        588        678        975        515        401        489   
 24     552        540        516        225        779        343        230   
 25     324        597        382        749        291        226        385   
 26     503        576        174        363        335        532        290   
 27     396        472        553        424        731        666        375   
 29     303        385        362        259        228        210        244   
 30     233        349        604        480        225        304        262   
 31     268        232        283        372        440        191        250   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   algo ankr areq asc1 auck bahr brmu cas1 casa chat chur coco cro1 dav1 dgar drao eisl fair flin fort gol2 graz guam hark iisc irkt kerg kiru kit3 kokb kosg kour kwj1 mac1 mad2 mali mas1 mdvo mets mkea nlib nrc1 ohig pert pol2 rcm6 reyk sant shao stjo tahi tid2 tskb usno usud whit wtzr wuhn xian yell zwen

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