Subject: [IGSREPORT-4179] Wk 0923 JPL Analysis Report
From: D C Jefferson
Date: Mon, 29 Sep 1997 17:29:32 PDT

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IGS Electronic Report    Mon Sep 29 17:29:32 PDT 1997      Message Number 4179
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Author: D C Jefferson
Subject: Wk 0923 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0923 (DAYS 257-263, DATES 1997 Sep 14 - Sep 20)
******************************************************************************

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 (128.149.70.41),
directory pub/jpligsac/0923.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09237.sum         This text file.
jpl09237.erp         Earth rotation parameters for GPS week 923.
jpl09237.snx         Ground station coordinates for GPS week 923, SINEX format.
jpl0923[0-6].sp3     GPS ephemerides for GPS week 923, sp3 format.
jpl0923[0-6].tro     Ground station troposphere estimates for GPS week 923.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 10.0 cm

Data from PRN29 were mismodeled on days 261-263 and have been excluded
accordingly.

Although used in each day's analysis, we continue to deweight data from PRN13.
This satellite does not appear in any of the orbit products for this week.

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 days 259-263.
WARNING: Data from PRN13 deweighted the entire GPS week 923.
WARNING: Data from PRN29 excluded days 261-263.
WARNING: Data from QUIN excluded day 257.
WARNING: Data from CSN1, KELY, KOUR excluded day 258.
WARNING: Data from CMP9, THU1 excluded day 260.
WARNING: Data from BLYT, KSTU, METS, TAEJ excluded day 261.
WARNING: Data from CAT1, METS excluded day 262.
WARNING: Data from SANT, TAIW excluded day 263.

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 923 (1997 Sep 14 - Sep 20)
     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
50705.50  21781  42540   422433  1710    3    4     8      8 37  9 26   58 -207 
50706.50  21788  42309   420686  1783    3    3     8      8 37 10 26   44 -264 
50707.50  21804  42034   418867  1855    3    4     8      8 37  8 26   40 -255 
50708.50  21817  41769   416984  1912    3    3     8      8 37 10 26   49 -248 
50709.50  21877  41539   415008  2039    4    4     9      9 37  9 25  100 -239 
50710.50  21957  41288   412986  2005    4    4     8      8 37 10 25   84 -246 
50711.50  22016  41039   410988  1991    4    4     8      8 37  9 25   84 -264 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 923:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 923 (1997 Sep 14 - Sep 20)
      97  9 14   97  9 15   97  9 16   97  9 17   97  9 18   97  9 19   97  9 20
prn   3d rss (cm)
  1      10         18         10         12          7         12         15   
  2       8          8         13         10          9          7          9   
  3      23         25         22         29         37         31         19   
  4       6          6          6          8         10          6          8   
  5       8          6          7         10         10          7          5   
  6       6         12          7          9         11          9          7   
  7       8          6         10         11         10         11          8   
  9       8         10         11         12         10          9          9   
 10       6         10          9          9          8         12          8   
 13    6381       8631         50         45         59         51         42   
 14       7          9         14         15          9         23         14   
 15      14          8         19         24         10         11         14   
 16      13         16         14         10          8          9          8   
 17      13         21         12         15         20         29         16   
 18      12         12         14         10          8          8          8   
 19      13         11         24         16         10          9          7   
 21      10          8         10         14         12         18         21   
 22      10         12          9          8         10         12         18   
 23      14         20         14         10         10         16         25   
 24       6         11         12          7          8          7          6   
 25       8         10         10          6          7          9         11   
 26      11         11          8          8          5         14         10   
 27       6         10          9         13         10          7          7   
 29      10          8         13          7                                    
 30       6          4         10          6          6          5          6   
 31      23         12         12         12         12         17         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 923 (1997 Sep 14 - Sep 20)
 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   1.0    30.1        107.        53.0        4.00        2.79    
ALGO*  7.1    216.        .788        46.7        4.63        3.04    
ANKR    .9    186.       -.708e-01    53.0        4.00        3.09    
AREQ   1.0    113.       -.654e-01    53.0        5.00        1.85    
ASC1   3.9    126.       -.871        60.6        4.77        1.64    
BAHR   7.0    .108e+06    383.        60.8        5.44        2.83    
CAS1   5.8    10.0        236.        47.4        5.52        1.70    
CASA   1.0    22.3        425.        39.0        5.00        2.77    
CHAT   7.0    112.       -.512        76.8        5.16        1.97    
CRO1   7.0    179.       -.512        50.1        5.64        1.90    
DGAR   6.1    479.       -.410        67.7        5.87        1.48    
FAIR*  7.0    63.6       -.643e+04    56.9        4.87        1.72    
FLIN   2.0    91.0       -.820        46.1        4.53        2.41    
FORT   6.7    11.0       -.472        67.1        5.17        1.72    
GALA   6.9    283.       -.517        69.6        4.74        1.53    
GOL2*  7.0    .147        .268        41.0        5.08        1.83    
GUAM   7.0    145.       -.512        61.5        7.64        1.73    
HARK   7.0    657.       -2.37        53.7        4.73        2.67    
IISC   7.0    98.7       -.511        74.4        5.59        2.05    
IRKT   4.8    2.73       -.536        61.4        4.83        1.57    
KELY   1.0    107.       -.681e-01      .         5.00        1.64    
KERG   6.9    .126e+05    35.0          .         5.00        2.04    
KIRU   1.0    7.89       -2.87        53.0        6.00        1.14    
KIT3   1.9    133.       -.782        66.4        4.00        1.61    
KOKB*  6.8    91.1       -.563        97.1        6.37        1.50    
KOSG*  5.8    1.64       -6.30        44.3        4.19        2.23    
KOUR   1.0    3.77       -.674          .         7.00        1.95    
KWJ1   7.0    103.       -.501        65.7        6.29        1.41    
LHAS   7.0    103.       -.508        58.4        5.04        1.96    
LPGS   1.0    136.       -.514e-01    56.0        5.00        3.16    
MAC1   3.5    82.4       -.418        33.5        4.00        2.16    
MAD2   1.0    .120        .201        78.0        6.00        1.14    
MADR*  6.8    .920       -1.16          .         6.18        2.08    
MALI   1.9    .231e+06    95.3          .         7.00        1.77    
MAS1   6.0    3.01       -.508e-01    45.8        4.70        2.48    
MCM4   7.0    93.1       -.506        36.4        4.31        1.21    
MDVO   2.7    .409        527.        69.4        7.00        2.00    
MKEA   4.0    .174       -.484        52.3        5.05        1.74    
NICO   1.9    117.       -.861        35.9        5.00        2.30    
NOTO   2.0    .247        .642        38.3        5.10        2.78    
NRC1   1.0    .267       -.112        63.0        4.00        3.21    
PERT   7.0    2.06       -12.8        53.9        4.73        2.08    
PIE1   4.7    .           .           52.2        5.64        2.55    
POL2   1.9    87.5       -.901        54.8        3.57        2.58    
REYK   4.0    79.7       -.854        61.5        6.00        1.69    
SANT*  5.4    637.       -.912        45.8        4.47        1.30    
STJO   1.0    1.64        .343        39.0        4.00        2.51    
TAHI   5.5    153.       -.596        78.9        5.38        1.99    
TAIW   1.0    .387e+05    .136e+05      .         5.00        2.86    
THU1   4.2    .415e+05   -8.85        47.4        6.00        2.41    
TID2*  6.9    20.2       -.524        38.9        5.16        2.06    
TOUL   4.0    .507       -2.83        53.5        5.00        2.82    
TSKB   1.0    1.67       -.362        45.0        7.00        2.96    
USUD   6.0    50.1       -.429        40.2        5.35        2.09    
WES2   3.0    .184       -.683        56.7        5.41        2.69    
WTZR*  5.2    203.       -1.10        62.0        4.55        2.54    
WUHN   5.9    .683e+06   -.114e+04    47.4        5.00        2.46    
YELL*  5.0    .616       -1.99        43.4        4.61        1.79    
PRN01  7.0    79.9        28.0        58.3        5.00        2.28    
PRN02  7.0    80.9       -404.        58.3        5.31        2.54    
PRN03  7.0    84.2        52.8        61.4        5.30        2.09    
PRN04  7.0    81.7        46.8        57.6        5.00        2.11    
PRN05  7.0    83.6        113.        52.6        5.00        2.29    
PRN06  6.9    82.8       -.849        58.0        5.00        2.08    
PRN07  7.0    82.4        754.        53.6        5.00        2.12    
PRN09  6.9    82.2       -12.0        60.3        5.16        2.12    
PRN10  7.0    79.9        12.4        58.8        5.16        2.01    
PRN14  7.0    80.9        21.8        54.4        5.62        2.34    
PRN15  6.9    3.14        468.        61.7        5.31        2.06    
PRN16  7.0    83.2        27.6        59.6        5.16        2.37    
PRN17  6.9    81.1       -160.        58.5        5.00        2.06    
PRN18  7.0    80.5        4.07        56.9        5.16        2.12    
PRN19  7.0    79.8        225.        55.8        5.16        2.20    
PRN21  7.0    83.4        80.5        57.6        5.15        2.31    
PRN22  7.0    79.4        17.6        56.0        5.16        2.16    
PRN23  7.0    79.5        3.37        61.7        5.15        2.34    
PRN24  7.0    82.0        755.        56.3        5.00        2.17    
PRN25  7.0    81.1       -6.52        52.8        5.00        2.33    
PRN26  7.0    81.5       -17.7        55.7        5.31        2.11    
PRN27  7.0    80.6        .351        58.3        5.00        2.27    
PRN29  4.0    85.0        284.        55.5        5.28        2.34    
PRN30  7.0    80.3       -82.1        55.1        5.00        2.46    
PRN31  7.0    81.4       -1.02        56.2        5.45        2.19    
_______________________
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  9 14   97  9 15   97  9 16   97  9 17   97  9 18   97  9 19   97  9 20
prn   3d rss (cm)
  1     295        371        282        246        219        415        486   
  2     152        152        339        433        252        243        242   
  3     255        229        242        199        170        296        196   
  4     233        305        381        341        335        270        274   
  5     269        209        250        319        289        281        431   
  6     959        462        437        416        412        547        671   
  7     269        441        463        305        344        381        341   
  9     221        286        234        197        218        301        264   
 10     180        253        240        334        303        443        262   
 13   15482        219        176        357        302        251        366   
 14     459        328        558        536        548       2006        658   
 15     286        244        208        259        252        370        400   
 16     302        413        583        544        879        307        394   
 17     216        327        237        320        533        218        213   
 18     750        534        687        611        760        534        537   
 19     612        390        424        229        301        291        399   
 21     246        231        287        221        302        229        268   
 22     454        294        373        506        364        274        380   
 23     656        388        487        336        581        400        224   
 24     353        497        317        440        744       1318        690   
 25     663        485        331        435        586        344        224   
 26     657        470        247        353        290        264        279   
 27     405        354        564        560        404        468        483   
 29     318        413        459        394                                    
 30     174        213        246        229        212        313        308   
 31     486        348        562        318        223        259        264   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   albh algo ankr areq asc1 bahr cas1 casa chat cro1 dgar fair flin fort gala gol2 guam hark iisc irkt kely kerg kiru kit3 kokb kosg kour kwj1 lhas lpgs mac1 mad2 madr mali mas1 mcm4 mdvo mkea nico noto nrc1 pert pie1 pol2 reyk sant stjo tahi taiw thu1 tid2 toul tskb usud wes2 wtzr wuhn yell

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