Subject: [IGSREPORT-3980] Wk 0914 JPL Analysis Report
From: D C Jefferson
Date: Fri, 25 Jul 1997 17:03:25 PDT

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IGS Electronic Report    Fri Jul 25 17:03:25 PDT 1997      Message Number 3980
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Author: D C Jefferson
Subject: Wk 0914 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0914 (DAYS 194-200, DATES 1997 Jul 13 - Jul 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/0914.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09147.sum         This text file.
jpl09147.erp         Earth rotation parameters for GPS week 914.
jpl09147.snx         Ground station coordinates for GPS week 914, SINEX format.
jpl0914[0-6].sp3     GPS ephemerides for GPS week 914, sp3 format.
jpl0914[0-6].tro     Ground station troposphere estimates for GPS week 914.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 12.0 cm

According to IGS Mail No. 1646, the receiver/antenna setup at YAR1 has been
modified.  We have stopped using this station as a fiducial (constrained)
site as of day 195.

Data from PRN16 did not meet our initial convergence criteria on days 196
and 197.  We have excluded this satellite from the analyses of these days.

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: Data from KELY, YAR1 excluded day 194.
WARNING: Data from IISC, KELY, SHK1, YAR1 excluded day 195.
WARNING: Data from PRN16, CLAR, COCO, DAM2, KELY excluded day 196.
WARNING: Data from PRN16, IISC, SANT excluded day 197.
WARNING: Data from CSN1, KELY, YAR1 excluded day 198.
WARNING: Data from ZWEN excluded day 199.
WARNING: Data from TAEJ, WSMN, ZWEN excluded day 200.

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 914 (1997 Jul 13 - Jul 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
50642.50   6729  53206   518264  1186    3    4     7      7 37 10 25  356  -62 
50643.50   7086  53120   517051  1240    3    4     7      7 37 10 25  373  -85 
50644.50   7417  53054   515808  1245    3    4     7      7 37  9 24  332  -82 
50645.50   7747  52951   514598  1175    3    4     8      8 36  9 24  340  -63 
50646.50   8036  52890   513381  1260    3    4     7      7 37 10 25  318  -78 
50647.50   8323  52833   512074  1353    3    4     7      7 36 10 25  301  -44 
50648.50   8625  52729   510713  1369    3    4     7      7 37 10 25  312  -68 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 914:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 914 (1997 Jul 13 - Jul 19)
      97  7 13   97  7 14   97  7 15   97  7 16   97  7 17   97  7 18   97  7 19
prn   3d rss (cm)
  1      10          7         11         12         13         11          8   
  2      12         15          9          9          9         12          9   
  3      16         16         16         13         12         16         10   
  4       6         10         13          8         10         15         14   
  5      15         12          8         14          8          9         19   
  6      25         31         38         33         15         26         17   
  7      11         13          8          8          8          9         11   
  9       9         19         13         15         11          8         10   
 10      13          7          8          8         10         10          7   
 14       9         15         28         14         11         15         21   
 15       8         10         11         16         15         14          8   
 16       7          6                                8         36         37   
 17      14         19         15          8         12         11         11   
 18      14         17         15          9         14         12         10   
 19      18         19         19         10          9         18         19   
 21      15         14         17          7         19         14         12   
 22       9         20         28         21         30         35         24   
 23      12         13         10         12         13          9          7   
 24      10         11          8          8          7          7         15   
 25      22         24         17         20         41         21         16   
 26      11          9          9         10          8          6          9   
 27      10          6         10         12         14         15         15   
 29       6         12         21         15         17         13         14   
 30      19         16         17         18         14         15          8   
 31       9         13          9         10         14         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 914 (1997 Jul 13 - Jul 19)
 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    6.02       -10.1        43.0        4.00        3.23    
ALGO*  7.0    .           .           49.7        6.41        3.05    
AREQ   2.0    97.8       -1.44        39.5        4.53        2.34    
ASC1   6.8    75.7       -1.36        66.5        6.03        1.57    
BAHR   7.0    .988        128.        59.5        5.03        4.22    
BRMU   1.0    119.       -1.53        39.0        6.00        3.25    
CAS1    .9    26.0        .399e+04    46.0        5.00        2.19    
CASA   4.0    .554e+05    335.        39.5        5.00        2.71    
CHAT   7.0    106.       -1.37        76.9        5.00        2.64    
COCO   1.4    64.2       -148.        37.0        5.62        2.73    
CRO1   7.0    149.       -1.36        48.2        6.79        2.16    
DAV1   4.4    89.5        .163e+04    30.9        4.79        1.68    
DGAR   7.0    95.7       -1.37        54.2        6.18        1.85    
DUBO   1.0    233.       -1.52        42.0        5.00        2.65    
FAIR*  7.0    .175       -1.12        35.2        5.59        2.30    
FLIN   2.7    190.       -1.42        49.3        5.79        2.22    
FORT   6.9    18.7       -1.86        48.7        5.74        2.85    
GOL2*  7.0    .142       -3.81        50.2        5.21        2.18    
GUAM   7.0    117.       -1.37        64.1        9.35        2.25    
HARK   7.0    20.0        .744e-01    56.1        4.87        2.93    
HKLO   1.0    .282e+06    503.        50.0        8.00        2.66    
IISC   4.6    84.2       -1.42        67.9        6.19        2.37    
IRKT   3.9    .226       -1.14        67.8        5.54        2.56    
KERG   6.0    120.        .712          .         5.18        2.64    
KIRU   3.0    223.       -1.31        55.0        7.04        2.40    
KIT3   4.8    126.       -1.27        53.5        5.00        2.90    
KOKB*  6.7    104.       -1.37        61.4        6.46        1.83    
KOSG*  5.8    519.       -3.96        45.9        5.72        2.59    
KOUR   3.0    3.67        12.5          .         10.3        1.37    
KWJ1   7.0    103.       -1.36        57.4        9.26        1.82    
MAC1   1.0    84.7       -1.63        30.0        5.00        2.50    
MADR*  6.7    .173       -.833          .         7.19        2.33    
MALI   5.9    29.6       -318.          .         8.70        2.46    
MAS1   7.0    3.01        11.3        42.3        4.90        2.69    
MCM4   7.0    92.7       -1.36        30.9        4.00        2.12    
MKEA   6.0    .128       -1.40        37.7        5.53        2.62    
MOIN   2.7    90.1       -1.30        62.7        10.8        1.71    
ONSA   1.0    535.       -3.23        39.0        4.00        2.09    
PERT   7.0    2.22       -6.77        56.9        4.46        2.83    
POL2   1.0    93.6       -1.60          .         5.00        2.61    
REYK   7.0    80.3       -1.36        59.9        6.80        2.07    
SANT*  5.2    .284e+04   -.458e-01    33.3        6.15        1.56    
SHAO    .9    92.9       -1.10        53.0        4.00        3.02    
STJO   6.0    3.18        .169        41.3        4.88        3.22    
TAHI    .9    123.       -1.63        73.0        6.00        2.46    
THU1   5.5    120.       -1.42        45.4        5.35        2.29    
TID2*  7.0    .120       -1.32        38.3        5.29        2.86    
TOUL   7.0    .488       -1.22        50.4        6.00        2.69    
USUD   6.0    1.12       -.206        38.7        5.86        2.98    
WTZR*  7.0    295.       -1.64        65.4        5.31        2.60    
WUHN   3.9    5.92       -.525e+04    47.0        5.54        2.77    
XIAN   2.0    161.       -1.58        45.5        5.53        2.55    
YELL*  7.0    .219       -1.86        45.1        5.31        1.73    
PRN01  7.0    80.6        22.7        53.4        6.00        2.28    
PRN02  7.0    79.9       -385.        51.9        6.00        2.41    
PRN03  6.9    82.0        31.9        53.3        6.31        2.52    
PRN04  7.0    83.0        35.8        51.0        6.31        2.28    
PRN05  7.0    79.8        103.        49.3        5.45        2.54    
PRN06  6.9    78.2       -1.52        53.2        6.48        2.24    
PRN07  6.9    82.9        749.        54.5        5.87        2.23    
PRN09  7.0    79.3       -5.75        50.3        6.18        2.35    
PRN10  6.6    81.6        9.16        54.4        5.87        2.25    
PRN14  6.8    80.3        19.1        50.5        6.03        2.40    
PRN15  7.0    3.27        446.        52.9        6.15        2.21    
PRN16  4.8    81.8        18.4        51.7        6.43        2.25    
PRN17  6.9    79.1       -155.        53.3        6.00        2.27    
PRN18  7.0    79.7        1.04        48.8        5.75        2.40    
PRN19  7.0    80.9        103.        51.0        5.88        2.28    
PRN21  6.8    82.5        66.1        51.6        6.73        2.34    
PRN22  7.0    81.4        2.41        49.4        6.00        2.42    
PRN23  6.8    82.2        .229        54.4        6.72        2.48    
PRN24  7.0    82.3        649.        53.6        5.87        2.30    
PRN25  7.0    79.7       -7.05        48.0        6.30        2.26    
PRN26  7.0    81.2       -205.        50.6        5.87        2.38    
PRN27  7.0    80.4        34.5        52.8        5.46        2.22    
PRN29  7.0    84.6        212.        50.0        5.90        2.68    
PRN30  6.9    80.1       -70.0        53.3        5.73        2.43    
PRN31  6.9    81.9        505.        49.4        6.15        2.39    
_______________________
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  7 13   97  7 14   97  7 15   97  7 16   97  7 17   97  7 18   97  7 19
prn   3d rss (cm)
  1     401        478        319        234        230        276        471   
  2     269        492        336        258        219        268        347   
  3     263        256        224        232        275        591        291   
  4     340        271        432        379        560        439        547   
  5     661        354        470        312        287        315        231   
  6     575        673        770        716        612        612        731   
  7     911        247        397        630        458        402        400   
  9     300        186        153        235        176        271        186   
 10     523        394        377        604        400        470        741   
 14     602       1009        881       1155        614        248        214   
 15     603        336        284        394        267        280        433   
 16     821        646                              527        570        523   
 17     259        847        190        236        213        336        203   
 18     572        626        614        598        674        790        616   
 19     613       1202        346        213        208        194        194   
 21     451        305        421        594        526        285        447   
 22     420        352        406        357        337        459        706   
 23    1278        348        452        342        414        812        261   
 24     730        435        956        439        437        619        554   
 25     385        576        491        292        337        564        594   
 26     301        323        228        345        391        191        253   
 27     186        177        251        300        299        374        873   
 29     674        646        451        483        240        178        607   
 30     241        298        196        218        221        352        402   
 31     554        249        152        228        225        271        333   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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