Subject: [IGSREPORT-4354] Wk 0931 JPL Analysis Report
From: D C Jefferson
Date: Mon, 24 Nov 1997 15:39:52 PST

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IGS Electronic Report    Mon Nov 24 15:39:52 PST 1997      Message Number 4354
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Author: D C Jefferson
Subject: Wk 0931 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0931 (DAYS 313-319, DATES 1997 Nov 09 - Nov 15)
******************************************************************************

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/0931.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09317.sum         This text file.
jpl09317.erp         Earth rotation parameters for GPS week 931.
jpl09317.snx         Ground station coordinates for GPS week 931, SINEX format.
jpl0931[0-6].sp3     GPS ephemerides for GPS week 931, sp3 format.
jpl0931[0-6].tro     Ground station troposphere estimates for GPS week 931.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 10.0 cm

Beginning day 313, we use MAD2 as a fixed site instead of MADR.  As this new
site utilizes a Turbo-Rogue receiver, we analyze all pseudorange from this
station; these data were excluded when the older, regular Rogue was used.
Since MAD2 operates with the same Deep Space Network GPS antenna as MADR, the
constrained nominal coordinates have not changed.

We have recently discovered an error in our treatment of the solar radiation
pressure estimate for PRN03 which has existed since its inclusion in our
processing beginning in April, 1996.  The problem has been corrected beginning
with day 313 (GPS week 931, day 0).

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 HOLP, KELY, SANT, SELE, ZECK excluded day 314.
WARNING: Data from HOLP, POTS excluded day 315.
WARNING: Data from SNI1, THU1 excluded day 317.
WARNING: Data from KERG excluded day 319.

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 931 (1997 Nov 09 - Nov 15)
     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
50761.50  21323  27249   303557  2281    3    4     9      9 37 10 25  -53 -252 
50762.50  21236  27016   301277  2279    3    3     9      9 37 10 25  -66 -234 
50763.50  21124  26743   299045  2186    3    4     9      9 37 10 25  -96 -207 
50764.50  20962  26476   296892  2120    3    4     9      9 37 10 25 -128 -272 
50765.50  20794  26240   294822  2020    3    4     9      9 37 10 25 -156 -248 
50766.50  20636  25987   292867  1890    3    4     9      9 37 10 25 -141 -210 
50767.50  20477  25788   290982  1880    3    3     8      8 37 10 25 -146 -229 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 931:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 931 (1997 Nov 09 - Nov 15)
      97 11  9   97 11 10   97 11 11   97 11 12   97 11 13   97 11 14   97 11 15
prn   3d rss (cm)
  1      10         16         10          9         15          9         16   
  2      10          7         12         11          7          7         10   
  3      16          9         14         10          4         11         10   
  4      10         12         13          9         14         13         14   
  5       9          9         13         10          6          8          7   
  6       8         10         12         16          7         15          8   
  7      13         11         11         10         12         17          6   
  9       8         10         10         19          9          4          7   
 10       8          6         10         18          9          8          6   
 14      18         10         14         12         18         12         14   
 15      12         18         20         15         20          9         11   
 16       9         12         13         12          8          9         14   
 17       5         11         18          8          8          5          6   
 18      19         21         11         26         13          9          5   
 19       6         14         37         54          7         10          5   
 21       6          8         11         12         11          7         16   
 22       9          9         11          8          8          8         10   
 23      16         11         25         27         13         11         15   
 24      13         13         15         12          9         12          8   
 25      12          8         13          7          8          5          8   
 26       7          6          6         11         14         10          7   
 27      10         16         18         20         10          9          9   
 29      10         11          5          6         14          8          6   
 30       8         12         12         11         16          9          8   
 31      11          9         15         15         20          7          8   
_______________________
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 931 (1997 Nov 09 - Nov 15)
 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    .           .           45.9        3.78        2.85    
ANKR   1.0    180.       -1.21        58.0        4.00        2.49    
AREQ   2.0    105.       -.748        55.1        4.53        1.78    
ASC1   6.6    .102e+05   -1.12        79.8        5.31        1.55    
BAHR   6.9    .186e+04    735.        57.0        5.62        3.11    
BRAZ   3.0    116.       -1.13        69.8        6.37        1.88    
BRMU   2.0    118.       -1.23        36.0        5.52        2.66    
CAGL   1.0    38.3       -1.04        42.0        5.00        2.91    
CAS1   1.0    19.8        685.        44.0        6.00        1.56    
CASA   2.0    37.1        4.98        39.5        4.53        2.32    
CHAT   7.0    108.       -1.02        75.2        5.31        2.59    
COCO   1.0    105.       -.640e+04    41.0        5.00        2.90    
CRO1   4.0    141.       -.933        45.0        5.52        1.96    
DGAR   6.8    181.       -1.02        75.2        5.73        1.50    
FAIR*  7.0    .103       -1.22        35.2        4.73        2.12    
FLIN   1.0    92.2       -1.23        47.0        4.00        2.67    
FORT   4.0    .157       -1.11        74.1        6.82        1.47    
GOL2*  7.0    .137       -.505        50.8        4.46        1.92    
GUAM   6.8    141.       -1.03        57.2        6.18        2.34    
HARK   4.8    183.        .143e-01    59.0        5.43        1.84    
IISC   7.0    93.8       -1.03        71.2        5.48        1.74    
IRKT   7.0    .218       -1.29        50.8        5.00        2.24    
KELY   5.5    .151e+04   -1.20        38.9        5.50        1.50    
KERG   5.0    152.        922.          .         5.00        2.06    
KIRU   1.0    2.88        2.01        48.0        6.00        1.80    
KIT3   7.0    143.       -1.01        77.3        4.00        2.42    
KOKB*  5.9    .200e+06   -242.        83.5        4.44        1.87    
KOSG*  7.0    3.65       -3.64        42.0        3.95        2.27    
KOUR   4.0    2.99       -3.14        59.6        6.29        1.53    
KWJ1   6.8    206.       -1.02        67.8        5.88        1.88    
LHAS   7.0    95.9       -1.02        47.0        4.31        2.39    
LPGS   2.0    441.       -.775        57.0        5.52        1.07    
MAC1   1.9    96.1       -1.04        36.0        4.00        2.39    
MAD2*  6.9    .144e+04   -2.92        69.7        6.45        2.08    
MALI   7.0    .527e+04   -26.3        79.4        6.59        1.73    
MCM4   7.0    107.       -1.01        46.3        5.00        1.28    
MDVO   4.8    .121e+06    553.        69.8        6.43        1.85    
MKEA   5.0    .905e-01   -1.41        55.4        4.62        2.68    
MOIN   5.8    103.       -1.07        67.4        6.01        1.76    
NICO   4.0    89.4       -1.11        30.3        4.00        2.29    
NLIB   1.0    86.1       -1.50        49.0        4.00        2.69    
NOTO   1.0    .791e-01   -3.64        41.0        5.00        2.89    
OHIG   6.3    .299e+06   -7.28        47.2        4.17        1.39    
ONSA   2.0    .120        4.23        40.5        4.00        2.00    
PERT   6.0    2.47       -5.85        52.9        4.69        2.21    
RCM6   1.0    89.6       -.710        68.0        4.00        1.82    
REYK   1.0    75.1       -.795        59.0        6.00        1.59    
SANT*  4.5    721.       -1.01        45.3        4.82        1.07    
SHAO   7.0    90.6       -1.02        47.9        4.46        2.44    
STJO   6.9    53.5       -.841        45.3        4.60        2.40    
TAHI   3.9    186.       -.962        90.0        5.54        2.12    
TID2*  6.9    16.4       -1.06        39.6        5.73        2.48    
TSKB   1.0    2.04       -1.40        42.0        4.00        3.02    
WTZR*  7.0    .198       -1.16        62.4        4.31        2.69    
YAR1*  1.9    94.2       -.744        43.4        4.00        2.02    
YELL*  7.0    .701e+05   -33.1        38.0        4.62        1.55    
PRN01  6.9    79.8        31.4        57.2        5.00        1.73    
PRN02  7.0    83.0       -423.        60.5        5.00        2.24    
PRN03  6.9    81.2        69.4        58.2        5.30        1.68    
PRN04  6.8    81.3        55.4        57.1        5.15        1.79    
PRN05  7.0    79.7        121.        58.0        5.00        2.01    
PRN06  7.0    81.3       -1.23        59.8        5.15        2.09    
PRN07  7.0    81.3        759.        54.3        5.16        2.15    
PRN09  7.0    81.1       -19.0        58.7        5.00        1.98    
PRN10  7.0    79.7        14.0        59.4        5.00        2.03    
PRN14  6.8    78.4        22.9        57.0        5.15        1.71    
PRN15  6.7    3.12        488.        60.7        5.15        1.70    
PRN16  7.0    78.1        34.7        59.6        5.00        2.05    
PRN17  6.6    81.8       -166.        58.4        5.15        1.98    
PRN18  7.0    79.5        6.13        55.9        5.31        2.13    
PRN19  7.0    80.4        301.        54.7        5.33        2.30    
PRN21  6.8    80.2        3.34        61.8        5.00        1.91    
PRN22  7.0    82.2        27.5        58.9        5.00        2.00    
PRN23  7.0    80.7        4.81        58.3        5.31        2.24    
PRN24  6.7    79.7        785.        56.5        5.16        2.04    
PRN25  6.8    80.7       -7.47        54.8        5.00        1.68    
PRN26  7.0    79.9       -39.9        56.2        5.00        2.07    
PRN27  7.0    81.0        6.11        59.4        5.16        2.26    
PRN29  6.9    81.2        189.        54.0        5.00        1.85    
PRN30  6.9    79.9       -10.5        56.7        5.00        2.05    
PRN31  7.0    82.4       -1.12        59.7        5.15        1.82    
_______________________
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 11  9   97 11 10   97 11 11   97 11 12   97 11 13   97 11 14   97 11 15
prn   3d rss (cm)
  1     700        217        571        419        710        275        474   
  2     240        361        468        285        401        310        300   
  3     360        351        336        724        336        172        199   
  4     447        537        460        573        446        305        332   
  5     436        484        400        413        399        411        416   
  6     515        732        399        381        485        476        503   
  7     214        250        305        242        239        288        312   
  9     253        245        228        146        298        331        169   
 10     196        219        260        275        305        408        237   
 14     434        229        259        239        298        336       1076   
 15     274        312        540        206        736        483        205   
 16     238        455        468        312        328        327       1165   
 17     389        530        563        303        496        703        319   
 18     245        336        282        283        326        217        324   
 19     298        232        456       1185        843       1136        861   
 21     396        372        268        236        223        231        384   
 22     323        296        304        263        453        517        614   
 23     606        232        397        407       1043        680        396   
 24     494        486        745        491        297        509        320   
 25     488        312        608        772        833        796        768   
 26     176        224        236        198        260        277        161   
 27     462        454        392        695        626        550        424   
 29     232        228        501        796        721        181        291   
 30     211        302        221        183        411        171        364   
 31     219        500        317        190        662        567        339   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   algo ankr areq asc1 bahr braz brmu cagl cas1 casa chat coco cro1 dgar fair flin fort gol2 guam hark iisc irkt kely kerg kiru kit3 kokb kosg kour kwj1 lhas lpgs mac1 mad2 mali mcm4 mdvo mkea moin nico nlib noto ohig onsa pert rcm6 reyk sant shao stjo tahi tid2 tskb wtzr yar1 yell

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