Subject: [IGSREPORT-3771] Wk 0905 JPL Analysis Report
From: D C Jefferson
Date: Fri, 23 May 1997 9:16:01 PDT

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IGS Electronic Report    Fri May 23  9:16:01 PDT 1997      Message Number 3771
******************************************************************************

Author: D C Jefferson
Subject: Wk 0905 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0905 (DAYS 131-137, DATES 1997 May 11 - May 17)
******************************************************************************

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/0905.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09057.sum         This text file.
jpl09057.erp         Earth rotation parameters for GPS week 905.
jpl09057.snx         Ground station coordinates for GPS week 905, SINEX format.
jpl0905[0-6].sp3     GPS ephemerides for GPS week 905, sp3 format.
jpl0905[0-6].tro     Ground station troposphere estimates for GPS week 905.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 12.0 cm

Beginning this week, we add a new candidate station, USNO (see IGS Mail
Message 1598).  As with other sites, this station is 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)
USNO (U.S. Naval Observatory,   1112189.1170  -4842954.3010   3985351.3890
      Washington, D.C. USA)

Based on precise point positioning results, the true location of this site
deviates from the above nominal values by 78.0, -73.0, and 84.6 cm in X, Y,
and Z respectively.

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 131-135.
WARNING: Data from LHAS, TIBB, ZWEN excluded day 131.
WARNING: Data from COCO, KELY excluded day 132.
WARNING: Data from BAHR, KELY, METS, TROM excluded day 133.
WARNING: Data from ALGO, GOLD, MADR, METS, SOL1, TIDB, TROM, WSMN, ZWEN
         excluded day 134.
WARNING: Data from IISC, METS, SOL1 excluded day 135.
WARNING: Data from COCO, NYAL excluded day 136.
WARNING: Data from AZU1 excluded day 137.

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 905 (1997 May 11 - May 17)
     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
50579.50 -13468  46278  -381262  2217    3    3     9      9 37 11 25  285  276 
50580.50 -13237  46570  -383457  2173    3    3     9      9 37 11 25  214  276 
50581.50 -13034  46806  -385611  2135    3    3     9      9 37 10 25  197  235 
50582.50 -12837  47052  -387719  2081    3    3     9      9 35  9 25  216  222 
50583.50 -12629  47269  -389768  2017    4    4     9      9 37  7 25  248  199 
50584.50 -12360  47484  -391794  2035    3    3     8      8 37 11 25  290  201 
50585.50 -12065  47705  -393820  2016    3    3     8      8 37 11 25  267  199 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 905:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 905 (1997 May 11 - May 17)
      97  5 11   97  5 12   97  5 13   97  5 14   97  5 15   97  5 16   97  5 17
prn   3d rss (cm)
  1      21         21         18         17         15         10         12   
  2      11         14         14         11         14         16          5   
  3      30         17         24         25         24         23         37   
  4       9         11         10         13         21         13         12   
  5      17         15         14         13         13          9         11   
  6      10          6          7          6         10          7         10   
  7      13         14         14         12         11         13         10   
  9      20         17         12         10         13         17         19   
 10       6          7          7          4          6          8          5   
 14      23         28         19         11         12         14         13   
 15      17         15         14         14         10         13          8   
 16      10         12         13         14         10          9          7   
 17      10         13         12         11         12         11         10   
 18       9          7          8         11          6          6         10   
 19      13         12          8          7          9         10         20   
 21      20         18         10         11         18         19          9   
 22      11          7         10         14         12         10          8   
 23      30         16         10         10         14         18         13   
 24       8          5         17         30          8          7         11   
 25      12          9         15         16         15         14         11   
 26      10         14         12          8         12         10         10   
 27       7         12          7         10          6          6          4   
 29      14          9         13         10          8         13          6   
 30      13         20         10          8         13         13         17   
 31      13         15         13         12         11         10         10   
_______________________
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 905 (1997 May 11 - May 17)
 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*  5.7    63.2        .413        45.6        4.19        2.77    
ANKR   2.5    .378e+04    .410        54.7        5.00        2.36    
ASC1   5.8    95.4        .569e-01    69.3        5.70        1.73    
AUCK   7.0    76.7        .616e-01    40.4        4.60        2.83    
BAHR   5.8    .490        171.        57.3        5.06        3.84    
BOGT   6.9    108.        .833e-01    54.1        6.45        1.88    
BRMU   1.0    105.        .139        40.0        9.00        3.30    
BRUS   4.0    .194        2.77        59.0        5.10        3.00    
CAS1   3.0    11.2        .234e+04    41.0        5.67        1.62    
CASA   2.0    12.5        534.        42.1        5.00        2.95    
COCO   3.4    .769e+05   -326.        37.3        7.09        2.79    
CRO1   1.0    152.        .150        47.0        6.00        2.36    
DAV1   3.0    7.71        .312e+04    32.4        4.69        1.83    
DGAR   7.0    94.8        .631e-01    61.8        6.89        1.98    
FAIR*  7.0    .124        .210        33.9        4.59        2.30    
FLIN   4.0    88.9        .158        52.5        4.24        2.27    
FORT   3.9    .136       -62.4        49.3        7.87        3.46    
GOL2*  7.0    .998e-01    .174        43.7        5.48        3.11    
GUAM   6.0    175.        .928e-01    94.5        6.03        2.34    
HART*  5.9    962.        6.78        45.0        4.85        2.77    
IISC   3.3    87.6       -.222e-02    69.2        6.89        2.24    
IRKT   4.7    .213       -.217e-01    61.9        5.00        2.93    
KELY   1.0    84.2        .127        39.0        7.00        1.27    
KERG   3.0    180.        122.          .         6.00        2.33    
KIT3   1.0    194.        .164          .         6.00        1.36    
KOKB*  6.1    161.        .181        69.4        5.27        1.73    
KOSG*  7.0    1.70       -37.5        43.4        4.93        2.53    
KOUR   1.0    3.51        7.57          .         9.00        2.06    
KWJ1   7.0    98.9        .603e-01    60.6        7.19        1.64    
LHAS   4.9    152.        .231e-01    75.3        5.07        2.50    
MAC1   5.9    78.7        .539e-01    29.0        4.18        2.58    
MADR*  4.4    25.0        .200          .         6.88        2.34    
MALI   7.0    27.9       -172.          .         8.00        2.22    
MAS1   7.0    110.        .100        41.8        4.45        2.45    
MCM4   6.9    87.0        .750e-01    33.6        4.30        1.93    
MDVO    .9    .399        287.        69.0        7.00        2.78    
MKEA   4.0    .760e-01   -.191        43.3        5.77        2.64    
NOTO   1.0    .231        9.75        47.0        4.00        2.89    
NRC1   2.0    .845e-01    .182        51.0        4.00        2.60    
OHIG   4.8    .739e+05   -2.62        55.0        5.25        1.68    
ONSA   1.0    .212       -.298        38.0        4.00        2.17    
PERT   7.0    2.07       -15.8        52.2        5.45        2.78    
PIE1   5.0    .           .           54.4        5.00        2.58    
RCM6   6.0    92.9        .523e-01    53.0        7.09        2.64    
REYK   5.0    85.2        .277e-01    59.6        6.64        2.22    
SANT*  6.6    479.        1.46        36.9        5.33        2.20    
SHAO   1.0    84.8        .124        47.0        6.00        2.52    
STJO   3.0    251.        1.07        38.7        4.36        2.87    
TAHI   6.9    121.        .637e-01    80.1        6.63        2.60    
THU1   6.0    76.0        .443e-01    44.7        5.00        2.60    
TIDB   2.0    .922e-01    1.26          .         5.00        3.26    
USUD   6.0    508.        3.46        37.2        4.72        2.72    
WTZR*  6.0    97.8       -.179        62.2        5.64        2.83    
WUHN   2.9    .105e+05   -232.        47.0        6.48        2.39    
YAR1*  6.0    802.       -4.84          .         4.72        2.48    
YELL*  6.0    30.7       -.111        44.2        4.18        1.71    
PRN01  6.9    83.1        19.6        52.0        5.46        2.26    
PRN02  7.0    78.9       -363.        58.2        5.46        2.45    
PRN03  7.0    82.0        13.4        52.8        5.44        2.32    
PRN04  6.6    82.6        27.4        50.8        6.30        2.35    
PRN05  7.0    81.5        96.5        54.6        5.87        2.40    
PRN06  7.0    80.3        4.69        51.0        5.89        2.78    
PRN07  7.0    78.8        745.        54.8        5.74        2.09    
PRN09  7.0    82.7       -37.8        50.3        5.61        2.31    
PRN10  7.0    80.1        7.83        52.7        5.46        2.60    
PRN14  7.0    84.2        18.9        53.8        5.46        2.21    
PRN15  6.6    3.32        425.        55.9        5.86        2.27    
PRN16  7.0    81.1        11.7        58.0        5.60        2.23    
PRN17  6.8    80.0       -148.        51.7        5.45        2.42    
PRN18  7.0    81.1        .302        50.3        5.87        2.40    
PRN19  7.0    79.0        217.        55.1        5.46        2.34    
PRN21  7.0    81.9        53.4        55.0        5.46        2.42    
PRN22  7.0    82.9        392.        51.9        5.30        2.50    
PRN23  7.0    77.1        12.8        51.9        5.74        2.33    
PRN24  6.6    81.3        464.        52.3        6.59        2.41    
PRN25  7.0    82.0       -5.17        51.3        5.87        2.22    
PRN26  7.0    79.8       -171.        51.6        5.58        2.24    
PRN27  7.0    81.4        28.6        53.2        5.15        2.42    
PRN29  7.0    82.0        10.3        54.0        5.15        2.44    
PRN30  7.0    82.5       -54.9        53.0        5.31        2.38    
PRN31  7.0    81.6        359.        54.5        5.30        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  5 11   97  5 12   97  5 13   97  5 14   97  5 15   97  5 16   97  5 17
prn   3d rss (cm)
  1     389        506        227        262        311        361        215   
  2     374        238       1043        447        341        516        737   
  3     227        190        365        295        226        231        224   
  4     874        572        804        376        444        777        604   
  5     431        361        296        278        232        253        535   
  6     345        344        441        474        644        692        534   
  7     398        276        408        275        362        538        512   
  9     194        494        287        272        201        533        278   
 10     185        302        268        263        627        269        291   
 14     337        786        584        333        312        579        989   
 15     249        298        348        445        454        266        232   
 16     363        275        330        274        404        140        639   
 17     427        362        436        588        338        551        475   
 18     494        592        332        448        359        533        470   
 19    2801        233        247        247        193        346        628   
 21     181        273        348        486        482        234        503   
 22     276        312        442        385        378        403        318   
 23     211        250        328        394        281        278        343   
 24     354        343        339        340        357        585        421   
 25     718        742        414        431        382        354        292   
 26     187        275        170        142        172        299        186   
 27     498        350        350        372        750        285        860   
 29     193        186        142        167        193        189        213   
 30     245        254        472        538        206        228        481   
 31     208        186        217        234        206        265        242   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   algo ankr asc1 auck bahr bogt brmu brus cas1 casa coco cro1 dav1 dgar fair flin fort gol2 guam hart iisc irkt kely kerg kit3 kokb kosg kour kwj1 lhas mac1 madr mali mas1 mcm4 mdvo mkea noto nrc1 ohig onsa pert pie1 rcm6 reyk sant shao stjo tahi thu1 tidb usud wtzr wuhn yar1 yell

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