Subject: [IGSREPORT-5572] Wk 0986 JPL Analysis Report
From: D C Jefferson
Date: Mon, 14 Dec 1998 10:36:08 PST

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IGS Electronic Report    Mon Dec 14 10:36:08 PST 1998      Message Number 5572
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Author: D C Jefferson
Subject: Wk 0986 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0986 (DAYS 333-339, DATES 1998 Nov 29 - Dec 05)
******************************************************************************

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/0986.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09867.sum         This text file.
jpl09867.erp         Earth rotation parameters for GPS week 986.
jpl09867.snx         Ground station coordinates for GPS week 986, SINEX format.
jpl0986[0-6].sp3     GPS ephemerides for GPS week 986, sp3 format.
jpl0986[0-6].tro     Ground station troposphere estimates for GPS week 986.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 8.0 cm

Data from PRN02 were mismodeled on day 335 and have been excluded accordingly.

Beginning on day 335 and continuing indefinitely, the behavior of PRN02 during
eclipsing periods is no longer controlled, and therefore unmodelable.  As such,
we have chosen to routinely exclude all data from this satellite occuring
during shadow events from our processing.  For all other satellites, we
continue to exclude only data from the 30 minutes following the end of an
eclipse period.  We have chosen to exclude all data from PRN02 on day 335.

Also, a large clock discontinuity (reset) of about 6 microseconds was detected
for PRN25 at approximately 07:15 on day 339.

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 USNO) used as reference clock days 333-335 and 337.
WARNING: Data from COCO, HARK, HOLB, HOLC, LPGS excluded day 333.
WARNING: Data from COCO, HARK, HOLB, LPGS, MKEA, SANT excluded day 334.
WARNING: Data from PRN02, ASC1, CHUR, COCO, HARK, HOLB, MADR, MKEA, NYA1                 excluded day 335.
WARNING: Data from ASC1, COCO, HARK, HOLB, MKEA excluded day 336.
WARNING: Data from ASC1, COCO, HARK, HOLB excluded day 337.
WARNING: Data from BAHR, COCO, HARK, HOLB, HOLC, NYA1, NYAL excluded day 338.
WARNING: Data from ASC1, COCO, FORT, HARK, HOLB, MKEA excluded day 339.

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 986 (1998 Nov 29 - Dec 05)
version 2           
     MJD   XPole   Ypole  UT1R-UTC   LODR Xsg Ysg UTsg LOsg Nr Nf Nt   Xrt   Yrt
         10**-6" 10**-6"      .1us .1us/d 10**-6" .1us .1us/d          10**-6"/d
51146.50  150732  341738  -2605994  14149  51  55  178  178 37  0 27  -548 -1901
51147.50  150073  340142  -2619873  13608  55  60  184  184 37  0 27  -945 -1399
51148.50  148879  338677  -2632972  12591  59  66  193  193 37  0 26 -1675 -1671
51149.50  147634  336772  -2645461  12387  51  56  182  182 37  0 27 -1253 -2163
51150.50  146966  335549  -2657684  12058  55  60  182  182 37  0 27  -458 -1016
51151.50  146543  334771  -2669905  12385  58  61  185  185 37  0 27 -1160 -1031
51152.50  145613  333960  -2682128  12060  57  59  182  182 37  0 27 -1061 -1462
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 986:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 986 (1998 Nov 29 - Dec 05)
      98 11 29   98 11 30   98 12  1   98 12  2   98 12  3   98 12  4   98 12  5
prn   3d rss (cm)
  1       8          9         10          9          8          9         10   
  2      11          9                     6          6          8         10   
  3       8          6          8          7          4          8          6   
  4       6          6          6          8          6         12         16   
  5      10          7          6          6          8         10         14   
  6      11          6          8          7         12         10         13   
  7      11         10         10          7          8         11          6   
  8      10          9         13          5         16         12         10   
  9       8          6          7          6          6          7          6   
 10       7          8         11          6          4          7          5   
 13      11         15         17         11         10          8          8   
 14      18         11         12         24         17          8         27   
 15      12         12         13         17          7         14         10   
 16      14         16         15          6          8         14         11   
 17       7          5          8          5          8          7          9   
 18      10         16         20         18         21         14         12   
 19      19          9         20         18         15         29         20   
 21       6          6          7          6          7          8          8   
 22       5          6         10         12          5          9         11   
 23      10          6          7          6          8          7         11   
 24       6          8         11          6         12          8          8   
 25      10         12         15          7          9          9         14   
 26       7          6         10          6          6          5         20   
 27      10          5          8          5          6          8          7   
 29       9          8          9          9         10          7         16   
 30       8          9          7          7         10         14         12   
 31       4          6         11         10          7          6          5   
_______________________
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 986 (1998 Nov 29 - Dec 05)
 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    .959e-01   -.225        68.0        3.74        2.86    
AREQ*  4.8    632.       -.143        67.3        4.42        1.77    
ASC1    .7    .228e+04   -.832          .         5.00        1.58    
AUCK   5.0    102.       -.479        57.0        4.82        2.57    
BAHR   4.7    .398e+05    188.        40.0        4.40        2.53    
BOGT   4.9    655.        .969e-01    76.7        5.53        1.76    
CAS1   6.7    25.1        989.        40.1        5.47        1.13    
CRO1   2.0    186.       -1.03        60.0        5.53        1.98    
DAV1*  6.9    147.       -.205          .         4.72        1.45    
DGAR   2.1    .128e+07   -91.2          .         4.71        1.44    
EISL   6.8    730.       -.213        68.4        5.47        3.09    
FAIR*  7.0    .226       -.201        60.3        4.33        2.05    
FORT*  4.8    .655        .993e-01    90.2        6.00        1.37    
GOL2*  7.0    91.9       -1.75        67.9        4.16        2.50    
GOUG   6.5    .289e+06    501.        62.7        5.45        2.71    
GUAM*  7.0    131.       -.300        88.5        6.29        2.10    
HOB2*  1.0    .102       -.830        50.0        4.00        2.67    
HRAO   6.0    2.80        4.34        74.2        4.53        2.64    
IISC   4.8    108.       -.505        74.6        5.00        2.17    
IRKT*  4.9    .172        .762        45.2        4.81        2.52    
KELY   2.0    88.3       -.330          .         5.00        1.56    
KERG*   .8    .286e+04   -5.01          .         6.00        2.02    
KOKB*  6.5    201.        1.62        82.2        5.77        2.72    
KSTU    .9    79.9        .368        45.0        4.00        2.08    
KWJ1*  6.6    260.       -.210        85.9        6.44        1.73    
MAC1*  6.9    100.       -.223        45.3        4.60        2.31    
MAD2*  6.2    .112e+04   -1.87        55.0        5.00        2.08    
MAG0   2.8    .290e+06    479.        30.7        4.37        2.30    
MALI*  6.9    .164e+04    8.82        95.1        6.15        2.10    
MATE*  4.9    300.       -1.71        49.6        4.87        2.82    
MCM4   1.0    98.5       -1.05        52.0        5.00        .996    
MDVO   2.9    .509        226.        73.0        5.36        2.01    
METS   3.0    .163       -4.68        59.8        3.00        2.43    
NANO   1.0    2.80        195.        59.0        4.00        3.08    
NSSP   1.0    103.       -1.04        58.0        4.00        2.46    
NTUS   5.7    143.       -.151        95.5        5.34        1.29    
NYA1   1.5    .128       -.720        40.4        6.00        1.07    
ONSA*  6.8    .766e-01   -2.18        38.7        3.49        2.21    
PETP    .7    442.       -1.10        62.0        5.00        1.97    
PIE1*  4.9    12.8       -1.42        57.0        4.23        2.54    
POL2   5.0    78.8       -.194        58.6        3.82        2.58    
REYK   1.0    81.7       -1.03        66.0        7.00        2.13    
SANT*  3.4    .200e+04   -1.14          .         3.70        2.16    
SELE   1.0    101.       -1.05        41.0        4.00        3.01    
SUTH    .9    106.        .371        74.0        5.00        2.39    
THTI   2.8    .290e+06    501.        75.3        6.00        2.67    
THU1*  2.0    66.4       -.331        45.0        6.51        1.55    
TID2*  7.0    368.        .216        50.8        4.74        2.35    
TSKB*  6.5    1.53        .114        51.9        4.00        2.98    
USNO   3.2    .           .           75.0        5.68        2.46    
USUD   7.0    .129       -2.50        49.6        4.00        2.75    
VESL   6.7    .289e+06    497.        62.1        4.60        2.39    
WES2   3.0    .219        3.85        64.2        4.00        2.74    
WTZR*  7.0    .123       -2.25        59.6        4.00        2.96    
WUHN   1.9    11.2       -.105e+04    55.0        5.00        2.62    
XIAN   2.0    131.       -.328        56.0        4.00        2.40    
YAR1*  7.0    91.3       -.228        48.6        4.16        2.30    
YELL*  7.0    .113       -.258        54.6        4.44        1.73    
PRN01  7.0    81.9        66.9        59.6        5.00        2.26    
PRN02  5.6    79.0       -170.        68.0        5.00        2.28    
PRN03  7.0    81.4        71.1        65.0        5.00        2.22    
PRN04  7.0    79.7        288.        58.3        5.00        1.98    
PRN05  6.8    80.3        174.        63.2        4.46        2.17    
PRN06  7.0    79.3       -.711        61.3        4.87        2.16    
PRN07  7.0    80.5        800.        61.0        4.88        2.21    
PRN08  7.0    79.8        524.        61.7        4.31        2.07    
PRN09  7.0    81.4       -21.1        56.9        4.60        2.19    
PRN10  7.0    80.8        29.1        67.9        5.03        1.97    
PRN13  7.0    83.0       -376.        62.6        5.00        2.07    
PRN14  6.9    82.8        8.56        65.6        4.87        2.27    
PRN15  7.0    3.06        626.        62.6        4.87        2.24    
PRN16  6.8    79.8        90.6        69.8        5.03        2.06    
PRN17  7.0    81.4       -196.        62.8        4.60        2.23    
PRN18  7.0    80.3        18.8        64.0        5.00        2.16    
PRN19  7.0    80.0       -81.0        61.9        4.73        2.09    
PRN21  7.0    81.3        68.6        60.2        5.17        2.21    
PRN22  6.8    80.5        405.        63.4        5.00        2.12    
PRN23  7.0    80.7        6.73        60.7        5.00        2.23    
PRN24  7.0    82.5        566.        59.5        5.00        2.12    
PRN25  6.9    494.       -6.25        58.8        5.16        2.09    
PRN26  7.0    81.6        685.        57.5        4.74        2.13    
PRN27  7.0    79.5        3.67        62.3        4.86        2.24    
PRN29  7.0    82.1        190.        60.0        4.87        2.27    
PRN30  6.8    81.6       -19.1        59.0        5.00        2.02    
PRN31  7.0    80.6        10.1        65.6        5.00        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
      98 11 29   98 11 30   98 12  1   98 12  2   98 12  3   98 12  4   98 12  5
prn   3d rss (cm)
  1     333        416        571        245        527        417        334   
  2     265        901                   407        491        646        775   
  3     263        254        221        364        642        308        346   
  4     264        294        296        256        668       1019       1124   
  5     427        511        480        462        337        517        370   
  6     732        707        694        736        727        749        751   
  7     563        403        180        301        326        315        264   
  8     290        293        275        361        376        374        550   
  9     331        291        331        393        282        408        541   
 10     278        391        294        166        228        183        234   
 13     173        250        295        285        251        228        404   
 14     705        898        391        721       1489        653        433   
 15     319        569        281        253        361        843        600   
 16     273        778        194        270        282        514        657   
 17     208        238        242        386        392        263        200   
 18     244        305        186        335        532        358        498   
 19     336        325        186        185       1205       1082        200   
 21     332        556        312        192        288        507        723   
 22     225        299        359        315        346        887        560   
 23     259        382        668        374        790        932        583   
 24     473       1140       1026        243        377        344        188   
 25     432        562        673        567        390        383        362   
 26     171        215        188        168        181        293        350   
 27     290        347        212        275        295        227        952   
 29     350        474        165        266        226        309        300   
 30     338        440        348        410        270        368        268   
 31     389        542        401        391        606        907        300   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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