Subject: [IGSREPORT-5849] Wk 0998 JPL Analysis Report
From: D C Jefferson
Date: Fri, 5 Mar 1999 16:53:00 PST

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IGS Electronic Report    Fri Mar  5 16:53:00 PST 1999      Message Number 5849
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Author: D C Jefferson
Subject: Wk 0998 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0998 (DAYS 52-58, DATES 1999 Feb 21 - Feb 27)
******************************************************************************

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/0998.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09987.sum         This text file.
jpl09987.erp         Earth rotation parameters for GPS week 998.
jpl09987.snx         Ground station coordinates for GPS week 998, SINEX format.
jpl0998[0-6].sp3     GPS ephemerides for GPS week 998, sp3 format.
jpl0998[0-6].tro     Ground station troposphere estimates for GPS week 998.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 12.0 cm

Beginning this week, all of our clock solutions (satellites and ground
stations) are synchronized with GPS time.  This is accomplished by using
the JPL Rapid solution (which uses broadcast clocks to align itself with
GPS time) to initialize the clock offset and drift of our chosen reference
station at an epoch of 00:00 UT each day.

Per IGSMail numbers 2071 and 2075, we continue to exclude data data from
the following sites:

   AREQ ASC1 BARB BOGT BRAZ COCO CRO1 DGAR FORT GALA GUAM IISC
   KOKB KOUR KWJ1 MALI MKEA MOIN NOUM NTUS RIOP SEY1 THTI

Data from PRN30 were mismodeled on day 053 and have been excluded from
this day's analysis accordingly.

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 052, 053, 057, and 058.
WARNING: Data from PRN18 excluded the entire GPS week 997.
WARNING: Data from COCO, KELY, LPGS excluded day 052.
WARNING: Data from PRN30, COCO, KELY, LPGS, QUIN, excluded day 053.
WARNING: Data from ASC1, COCO, KELY, LPGS, MADR, QUIN excluded day 054.
WARNING: Data from COCO, GOL2, KELY, KSTU, LPGS, NYAL, REYK excluded day 055.
WARNING: Data from ASC1, COCO, KSTU, LPGS excluded day 056.
WARNING: Data from ASC1, COCO, KSTU, LPGS excluded day 057.
WARNING: Data from COCO, CRO1, KELY, LPGS excluded day 058.

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 998 (1999 Feb 21 - Feb 27)
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
51230.50   78480  245276   6472839  13141  68  75  194  194 37  0 26  -508  -583
51231.50   78377  245120   6459752  13033  69  80  203  203 37  0 25  -135  -440
51232.50   78280  244806   6446825  12821  73  81  201  201 37  0 26  -673  -206
51233.50   77355  244562   6434328  12172  72  83  201  201 37  0 26 -1346  -561
51234.50   75928  244055   6422482  11520  74  81  200  200 37  0 26 -1384  -869
51235.50   74269  243458   6411309  10826  69  78  195  195 37  0 26 -1797 -1168
51236.50   72346  242709   6400646  10500  74  80  199  199 37  0 26 -1774 -1405
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 998:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 998 (1999 Feb 21 - Feb 27)
      99  2 21   99  2 22   99  2 23   99  2 24   99  2 25   99  2 26   99  2 27
prn   3d rss (cm)
  1       9          8          8          6          7          6         14   
  2      20         16         15         21         31         35         18   
  3      13         25         20         13         15         10         22   
  4       6          8          7          8         12         13         19   
  5       6          8          6          6         11         10         19   
  6      10         24         15         11         16         13         19   
  7      16         12          8         16         11         13         15   
  8       7          8          7          4         12         11         29   
  9       7          5         11          6         14         12         20   
 10      11         13         10          8         10          8         14   
 13      32         27         14         30         19         30         22   
 14       7         14         11          8         14         12         14   
 15       9         12         11         11         13         14          9   
 16       8         16         16         11         14          7         19   
 17      12         11         12         11         22          9         18   
 19      13          8          5         15         12         13         23   
 21      14         14          7          9         13         10         15   
 22       6         14         13         14         10         11         13   
 23      17         18         14         14         12         10         24   
 24       7         16         10          5         10         28         49   
 25       7         11          9          6          8          5         15   
 26       6         34         13         19         14         11         17   
 27      11         12         14         25         13          7         20   
 29       9          8          8          6          6          7         15   
 30       5                     3          5          8          6          8   
 31      10         19         15         10         12         11         21   
_______________________
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 998 (1999 Feb 21 - Feb 27)
 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    .946e-01    .937e-02    92.6        4.26        2.69    
ANKR   1.0    97.8       -.114e-01    75.0        4.00        2.82    
AOML   5.0    .847e+04   -.423        63.1        4.22        2.52    
AUCK   7.0    105.       -.867e-02    50.6        4.80        2.66    
BAHR   4.9    .512        210.        39.1        5.42        2.95    
BRMU*  1.9    108.       -.321e-02    44.0        6.00        3.02    
CAS1   5.6    19.2        .392e+04    40.7        6.17        1.10    
DAV1*  6.9    192.        .222e-01      .         4.87        1.54    
DUBO   2.0    94.9       -.819e-02    52.0        3.00        2.91    
EISL   7.0    143.       -.247e-02    64.4        4.74        2.75    
FAIR*  7.0    .152       -.334e-01    96.3        4.15        2.45    
GODE   1.0    .134        .120        52.0        4.00        2.72    
GOL2*  2.8    551.       -.181        62.3        4.00        2.15    
GOUG   2.7    .289e+06    499.        59.4        5.34        2.76    
HARK*  4.7    5.66        3.41        70.9        4.79        2.64    
HOB2*  5.0    .929e-01   -.505        53.2        4.43        2.96    
HOFN   4.0    .290e+06    497.        52.1        6.27        1.87    
IRKT*  7.0    .135e+04   -5.96        52.0        4.46        2.69    
KUNM   6.3    230.       -.157e-01    72.0        4.14        2.48    
MAC1*  6.9    99.2       -.595e-03    43.5        4.45        2.29    
MAD2*  6.8    .183e+04   -1.23        80.0        6.58        2.09    
MAG0   6.9    .289e+06    480.        31.9        4.49        2.20    
MAS1*  6.6    317.        .753        69.3        4.33        2.58    
MCM4   6.8    129.        .274e-02    57.4        5.00        .974    
MDVO   3.9    .284        263.        72.1        5.78        2.19    
NANO   3.0    26.2        739.        51.7        5.00        2.99    
NOTO   3.0    .118        316.        57.7        5.07        3.26    
NRC1   1.0    .443e-01    .107e-01    101.        4.00        3.07    
NYA1   7.0    .111       -.391        39.1        6.44        1.35    
OHIG*  6.8    734.       -.297e-01    64.6        4.59        2.15    
PIE1*  5.9    .456e-01   -.222        58.2        4.41        2.64    
POL2   7.0    84.9        .256e-02    77.3        4.48        2.70    
RAMO   2.0    .292e+06    528.        55.7        5.52        2.74    
REYK   3.0    90.8       -.980e-03    61.3        6.68        2.26    
SANT*  5.5    .198e+04    2.52        53.0        4.15        2.17    
SCH2   1.0    19.7        2.16        64.0        4.00        3.17    
SHAO*  6.0    102.       -.833e-02    53.5        4.05        2.58    
STJO   5.0    2.90        .122        82.8        5.43        2.40    
SUTH   2.0    107.       -.175e-02    65.0        4.00        2.64    
THU1*  7.0    86.8       -.695e-02    48.1        6.47        1.62    
TID2*  7.0    .170        .869        48.6        5.45        2.65    
TIXI   4.0    95.4       -.874e-02    47.2        4.27        1.99    
TOUL   1.0    .663        155.        72.0        5.00        2.41    
TSKB*  7.0    1.54       -.182        51.5        4.16        3.12    
USNO   3.2    .           .           77.3        5.35        2.81    
USUD   7.0    .244        .570e-01    50.5        4.16        3.10    
VESL   3.8    .287e+06    509.        63.5        4.29        2.34    
WES2   1.0    .269        3.25        71.0        4.00        2.83    
WSRT   2.0    3.79        .293        50.1        4.00        2.53    
WTZR*  6.2    376.        2.83        68.9        4.59        2.57    
YAR1*  7.0    88.5       -.269e-02    49.6        4.46        2.22    
YELL*  7.0    .237        .221        70.1        4.32        1.77    
ZECK   3.9    74.0       -.502e-02    55.5        4.52        2.57    
PRN01  7.0    82.7        75.3        57.0        4.60        2.34    
PRN02  7.0    80.3       -28.4        66.7        5.03        2.34    
PRN03  7.0    82.3        96.8        60.7        4.87        2.23    
PRN04  7.0    81.8        502.        59.2        4.91        2.42    
PRN05  7.0    80.5        188.        61.4        4.76        2.29    
PRN06  7.0    80.6       -.233        56.5        4.73        2.26    
PRN07  6.9    82.5        811.        64.7        5.15        2.26    
PRN08  7.0    83.4        756.        60.5        4.86        2.07    
PRN09  7.0    82.0       -32.3        65.4        4.87        2.09    
PRN10  7.0    83.5        32.9        58.0        4.74        2.15    
PRN13  7.0    79.9       -21.3        61.7        5.48        2.06    
PRN14  7.0    82.0        14.9        57.6        5.15        2.25    
PRN15  7.0    3.64        655.        64.7        4.87        2.03    
PRN16  7.0    80.5        103.        64.8        5.33        2.25    
PRN17  7.0    82.3       -204.        63.0        4.74        2.34    
PRN19  7.0    81.4       -112.        61.9        5.16        2.25    
PRN21  7.0    78.7        8.57        56.9        5.00        2.16    
PRN22  7.0    81.7        189.        56.3        4.87        2.27    
PRN23  7.0    79.3        10.0        56.2        5.00        2.35    
PRN24  7.0    80.3        504.        65.0        5.22        2.48    
PRN25  7.0    82.7        .248        59.1        5.00        2.27    
PRN26  7.0    80.8        238.        60.4        5.15        2.17    
PRN27  7.0    82.6        12.1        62.6        5.00        2.23    
PRN29  7.0    81.0        260.        56.0        4.15        2.35    
PRN30  6.0    82.2       -9.01        59.2        4.84        2.05    
PRN31  7.0    79.6        14.1        60.4        5.16        2.16    
_______________________
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
      99  2 21   99  2 22   99  2 23   99  2 24   99  2 25   99  2 26   99  2 27
prn   3d rss (cm)
  1     786        594        693        667        650        913        791   
  2     358        226        246        238        293        339        231   
  3     283        338        385        322        312        361        341   
  4     738        733        219        662        531        780        478   
  5     325        243        210        252        260        497        276   
  6     635        822        623        669        538        673        502   
  7     284        484        287        326        424        411        318   
  8     274        248        396        679        628        312        185   
  9     272        184        201        320        195        210        205   
 10     359        316        267        356        361        292        514   
 13     261        245        280        134        191        275        308   
 14     563       1104        380        846        698        426        419   
 15     349        453        194        209        221        339        264   
 16     522        303        317        283        214        253        650   
 17     283        246        340        275        217        284        265   
 19    1036        332        180        501        158        168        304   
 21     520        514        439        198        226        274        205   
 22     240        408        398        412        295        335        503   
 23    1177        858        847        566        876        740        287   
 24     313        388        299        144        262        306        363   
 25     377        494        279        317        561        812        358   
 26     349        430        254        341        293        172        175   
 27     236        367        314        391        451        543        477   
 29     342        389        457        320        486        352        397   
 30     129                   168        207        370        459        404   
 31     505        470        532        819        319        430        585   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   algo ankr aoml auck bahr brmu cas1 dav1 dubo eisl fair gode gol2 goug hark hob2 hofn irkt kunm mac1 mad2 mag0 mas1 mcm4 mdvo nano noto nrc1 nya1 ohig pie1 pol2 ramo reyk sant sch2 shao stjo suth thu1 tid2 tixi toul tskb usno usud vesl wes2 wsrt wtzr yar1 yell zeck

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