Subject: [IGSREPORT-5112] Wk 0964 JPL Analysis Report
From: D C Jefferson
Date: Tue, 14 Jul 1998 13:39:28 PDT

******************************************************************************
IGS Electronic Report    Tue Jul 14 13:39:28 PDT 1998      Message Number 5112
******************************************************************************

Author: D C Jefferson
Subject: Wk 0964 JPL Analysis Report

******************************************************************************
JPL ANALYSIS REPORT   GPS-WEEK 0964 (DAYS 179-185, DATES 1998 Jun 28 - Jul 04)
******************************************************************************

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/0964.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09647.sum         This text file.
jpl09647.erp         Earth rotation parameters for GPS week 964.
jpl09647.snx         Ground station coordinates for GPS week 964, SINEX format.
jpl0964[0-6].sp3     GPS ephemerides for GPS week 964, sp3 format.
jpl0964[0-6].tro     Ground station troposphere estimates for GPS week 964.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 8.0 cm

PRODUCTS UPDATE
---------------
Starting with week 964 all products from JPL are computed without fiducial
constraints.  Our weekly SINEX file now includes Earth orientation estimates
for each day along with fully rigorous covariance information.  A summary is
given below:

     Orbits
        estimates - rotationally aligned with ITRF96 (translations and
                    scale left as freely estimated to retain observability
                    of geocenter and scale changes)
        sigmas - computed with internal constraints

     Earth Orientation Parameters
        estimates - aligned with ITRF96
        sigmas - no-fiducial sigmas

     Station Coordinates
        estimates - rotationally aligned with ITRF96 (translations and
                    scale left as freely estimated to retain observability
                    of geocenter and scale changes)
        sigmas - no-fiducial sigmas

     Satellite (and station) Clocks
        estimates - no-fiducial estimates
        sigmas - no-fiducial sigmas

     Tropospheres
        estimates - no-fiducial estimates
        sigmas - no-fiducial sigmas

GENERAL
-------
A large clock discontinuity (reset) of about 48 microseconds was detected
for PRN09 at approximately 12:05 on day 180.

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: FAIR (not USNO) used as reference clock days 181-183 and 185.
WARNING: NRC1 (not USNO) used as reference clock day 184.
WARNING: Data from AMCT, KELY, KSTU excluded day 179.
WARNING: Data from AMCT, KELY, KSTU excluded day 180.
WARNING: Data from KELY, KSTU, RCM6 excluded day 181.
WARNING: Data from LAMA excluded day 182.
WARNING: Data from KSTU, SIO3 excluded day 184.
WARNING: Data from WUHN excluded day 185.

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 964 (1998 Jun 28 - Jul 04)
     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
50992.50  -7486  43486  -109085   582    4    5    15     15 37  0 27  227   90 
50993.50  -7216  43614  -109679   607    4    4    15     15 37  0 27  253  127 
50994.50  -6953  43769  -110300   635    4    4    15     15 37  0 27  272  158 
50995.50  -6661  43966  -110948   660    4    4    15     15 37  0 27  256  174 
50996.50  -6413  44133  -111600   645    5    5    16     16 37  0 27  276  114 
50997.50  -6142  44280  -112211   577    5    5    16     16 37  0 27  258  138 
50998.50  -5907  44450  -112759   518    5    5    16     16 37  0 27  268  136 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 964:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 964 (1998 Jun 28 - Jul 04)
      98  6 28   98  6 29   98  6 30   98  7  1   98  7  2   98  7  3   98  7  4
prn   3d rss (cm)
  1       7          4          8          6          4          7         15   
  2       5          6          9          5          8         18         13   
  3      12          9          7          8         15         10         10   
  4       6          6          7         11          9         12          5   
  5       9          6          7          6          8          5          8   
  6       7         11          8         10          6         12         10   
  7      12          7          8          9          5         22         14   
  8       8          7         10          5          4          6          8   
  9      17          7         12          8         12         12         13   
 10      10          5          6         12         10         11          7   
 13       7         12         12          6          4         10          5   
 14       7          5          9         14         19          9          5   
 15       6          6          6          6          8          8          8   
 16       7          4          7          9          8         10          9   
 17       8          6         10         15          8         16         13   
 18      10         16         10          9          7          9         10   
 19       7          6         28         18          8         10          6   
 21       6         11          8          8         11          5         13   
 22       9          4          7         10          9         11         11   
 23      10          9         10          7          9          8         12   
 24       4          9          4          9          6         12         15   
 25       6          5          4         10          8          6          8   
 26       7          4          8         10          7          9          5   
 27       6          6          8          8          7         10          7   
 29       8          5          7         13          9          4          9   
 30       8          8         10          8          8          8         10   
 31       5          7          5          5          4          7          7   
_______________________
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 964 (1998 Jun 28 - Jul 04)
 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    .101        1.56        65.9        5.83        2.65    
ASC1   6.9    144.       -.421        71.5        5.60        1.42    
BAHR   3.8    .408        129.        43.5        5.00        3.31    
BARB   3.7    96.9       -.495        30.5        6.27        3.51    
BOGT    .9    147.       -.694        69.0        5.00        1.67    
BRUS   1.0    .463        5.56        62.0        5.00        2.71    
CASA   1.0    16.5        18.0        45.0        6.00        3.00    
COCO   2.0    114.       -.276e+05      .         7.00        1.74    
CRO1   2.0    159.       -.237        58.5        6.00        1.58    
DAV1*  6.8    132.       -.409          .         4.45        1.72    
DGAR   7.0    167.       -.421        69.5        5.46        1.83    
EISL   7.0    118.       -.425        52.1        5.31        2.96    
FAIR*  7.2    .183        .469        53.6        5.31        2.40    
FORT*  6.9    .222       -.556        67.7        5.16        1.71    
GALA   5.5    109.       -.393        69.5        5.20        1.65    
GODE   3.9    314.       -1.89        48.8        6.00        2.77    
GOL2*  7.0    .118       -1.22        45.7        4.87        2.17    
GRAZ*   .9    .477        .335        77.0        5.00        2.18    
GUAM*  3.0    106.       -.523        64.7        7.00        2.33    
HARK*  5.7    5.88       -6.40        50.6        4.00        2.94    
HRAO   7.0    .208       -2.06        33.3        4.00        2.87    
IRKT*  6.3    2.61       -.341        65.7        5.00        2.41    
KELY   1.0    112.        .171          .         5.00        .895    
KERG*  5.8    694.        .114e+04      .         5.21        2.66    
KIT3*  7.0    184.       -.408        71.3        5.16        2.62    
KOKB*  7.0    .118e+06   -864.        80.2        5.61        2.47    
KWJ1*  7.0    89.4       -.422        73.3        7.15        2.01    
LHAS*   .9    90.8       -.705        83.0        5.00        2.37    
MAC1*  6.8    89.7       -.414        39.4        4.00        2.39    
MAD2*  7.0    479.       -2.37          .         6.87        2.19    
MAG0   5.0    .342e+06    486.        33.2        5.04        2.47    
MALI*  5.8    33.3       -982.        79.5        7.34        1.85    
MAS1*  7.0    8.79       -.605        57.7        4.00        2.26    
MATE*  1.0    .197       -1.59        41.0        4.00        2.99    
MCM4   6.0    90.8       -.371        35.8        4.84        1.33    
MEDI   3.7    .334       -.329e-01    34.4        5.33        2.99    
MKEA   6.0    .139       -.391        59.2        5.00        2.66    
NRC1   1.1    .           .           74.0        5.00        2.22    
NTUS   4.4    177.       -.483        99.6        5.83        1.53    
NYA1   4.0    .207       -1.24        47.8        5.27        2.24    
OHIG*  6.8    871.       -.373        69.8        5.45        2.11    
ONSA*  5.9    .197       -2.64        43.5        4.18        2.05    
SANT*  6.9    279.       -.316        42.8        4.89        2.01    
TID2*  7.0    42.6       -.181        38.3        4.87        2.48    
TSKB*  7.0    2.04       -2.66        53.9        5.45        3.15    
USNO   2.2    .           .           55.0        6.00        2.82    
USUD   6.0    .311        3.39        47.0        6.23        2.89    
WTZR*  6.5    37.5       -1.85        66.2        5.00        2.61    
WUHN   1.0    6.27       -87.5        47.0        5.00        2.21    
YAKZ   1.0    .289e+06    445.        48.0        5.00        2.40    
YAR1*  6.9    83.1       -.419        38.0        4.45        2.39    
YELL*  7.0    .178       -.755        53.6        5.31        1.75    
PRN01  7.0    81.8        51.5        58.5        5.00        2.21    
PRN02  7.0    81.0       -505.        59.2        5.15        2.24    
PRN03  6.9    81.0        23.8        55.3        5.16        2.33    
PRN04  7.0    80.9        34.6        55.6        5.15        2.10    
PRN05  7.0    78.8        153.        57.7        5.00        2.31    
PRN06  7.0    81.3       -.656        61.5        5.29        2.06    
PRN07  6.9    79.9        782.        57.8        5.31        2.31    
PRN08  7.0    79.2        477.        56.1        5.00        2.16    
PRN09  6.9    .377e+04   -14.7        57.3        5.00        2.26    
PRN10  6.6    81.8        23.2        58.3        5.00        2.02    
PRN13  7.0    79.9       -183.        57.9        5.00        2.32    
PRN14  6.8    80.8       -.216        56.7        5.15        2.31    
PRN15  7.0    2.67        572.        58.4        5.00        2.51    
PRN16  6.6    79.4        68.3        58.1        5.31        2.20    
PRN17  7.0    80.7       -183.        59.5        5.15        2.07    
PRN18  7.0    79.4        14.6        56.7        5.00        2.23    
PRN19  7.0    79.7       -7.69        57.0        5.00        2.05    
PRN21  6.8    80.4        46.3        57.4        5.59        2.13    
PRN22  7.0    78.9        .671        54.0        5.00        2.34    
PRN23  6.8    81.1        .731        58.8        6.15        2.08    
PRN24  7.0    79.1        824.        55.8        5.16        2.15    
PRN25  7.0    82.5       -6.77        52.9        5.31        2.35    
PRN26  7.0    80.9        145.        56.0        5.16        2.35    
PRN27  7.0    80.9        33.2        57.6        5.00        1.97    
PRN29  7.0    79.8        515.        58.8        5.00        2.25    
PRN30  7.0    82.2       -45.7        53.2        5.16        2.23    
PRN31  6.9    80.3        4.47        55.7        5.31        2.40    
_______________________
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  6 28   98  6 29   98  6 30   98  7  1   98  7  2   98  7  3   98  7  4
prn   3d rss (cm)
  1     427        391        386        299        274        251        306   
  2     274        477        696        789        595        771        288   
  3     315        594        318        390        349        466        215   
  4     357        397        266        464        355        268        473   
  5     336        386        548        274        329        360        456   
  6     724        683        849        757        770        816        837   
  7     563        448        869        791        208        274        408   
  8     804        730        233        799        664        360        609   
  9     301        298        272        505        667        500        219   
 10     693        613        676        518        403        358        488   
 13     820        377        162        284        488        239        227   
 14    1280        446        330        809       1010       1069       1039   
 15     308        154        180        164        289        370        343   
 16    1450       1483        406        448        236        427        516   
 17     242        233        302        204        225        312        249   
 18     392        320        316        358        254        264        436   
 19     451        191        351        215        144        272        235   
 21     434        380        471        408        339        370        337   
 22     597        485        440        433        720        756        395   
 23     291        272        251        196        422        567        370   
 24     288        183        469        334        171        229        344   
 25     976        949        441        736        656        523        521   
 26     476        380        364        223        350        146        123   
 27     155        280        298        336        357        170        278   
 29     298        149        160        201        196        163        179   
 30     300        223        412        283        333        283        209   
 31     811        210        221        388        390        209        289   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   algo asc1 bahr barb bogt brus casa coco cro1 dav1 dgar eisl fair fort gala gode gol2 graz guam hark hrao irkt kely kerg kit3 kokb kwj1 lhas mac1 mad2 mag0 mali mas1 mate mcm4 medi mkea nrc1 ntus nya1 ohig onsa sant tid2 tskb usno usud wtzr wuhn yakz yar1 yell

[Mailed From: [email-masked]]