[IGSREPORT-8620] Wk 1130 JPL Analysis Report

David C Jefferson djeff at cobra.jpl.nasa.gov
Tue Sep 18 11:48:01 PDT 2001


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IGS Electronic Report   18 Sep 11:48:02 PDT 2001      Message Number 8620
******************************************************************************

Author: D C Jefferson

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JPL ANALYSIS REPORT   GPS-WEEK 1130 (DAYS 245-251, DATES 2001 Sep 02 - Sep 08)
******************************************************************************

Submitted by the JPL IGS/FLINN Analysis Team:

D C Jefferson, Y E Bar-Sever, M B Heflin, 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/1130.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl11307.sum         This text file.
jpl11307.erp         Earth rotation parameters for GPS week 1130.
jpl11307.snx         Ground station coordinates for GPS week 1130, SINEX format.
jpl1130[0-6].sp3     GPS ephemerides for GPS week 1130, sp3 format.
jpl1130[0-6].tro     Ground station troposphere estimates for GPS week 1130.
jpl1130[0-6].clk     GPS and ground station clocks for GPS week 1130, RINEX.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 6.0 cm

A clock discontinuity (reset) of about 569 microseconds was detected for
PRN26 at approximately 01:35 on day 248.  Also, the drift of the clock
onboard PRN30 experienced a shift from about -52 ps/s to +40 ps/s at
approximately 15:25 on day 247.

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 PRN15 and PRN19 excluded the entire GPS week 1130.
WARNING: Data from PRN11, PRN17 excluded day 245.
WARNING: Data from PRN02, PRN17 excluded day 249.
WARNING: Data from PRN02, PRN17, PRN23 excluded day 250.
WARNING: Data from PRN17 excluded day 251.
WARNING: Data from CARR, HARB, HILO, JAB1, LBCH, MALI, NTUS, WLSN, WTZT, WUHN            excluded day 245.
WARNING: Data from HARB, HILO, JAB1, LBCH, MAUI, WLSN, WTZT, ZWEN excluded day           246.
WARNING: Data from DRAG, HARB, HILO, JAB1, KARR, KIRU, LAE1, LBCH, MAUI, NKLG,           WLSN, WTZT excluded day 247.
WARNING: Data from DRAG, HARB, HILO, HNLC, JAB1, KARR, LAE1, LBCH, MAUI, WLSN            excluded day 248.
WARNING: Data from DRAG, EISL, HARV, HNLC, JAB1, JAMA, KARR, LAE1, LBCH, USNO,           WLSN excluded day 249.
WARNING: Data from DRAG, JAB1, LAE1, LBCH, MALI, WUHN, YAR2 excluded day 250.
WARNING: Data from DRAG, JAB1, LAE1, LBCH, WUHN, YAR2 excluded day 251.

JPL REFERENCE CLOCK TABLE                   GPS week 1130 (2001 Sep 02 - Sep 08)
 2001-09-02 NRC1
 2001-09-03 NRC1
 2001-09-04 NRC1
 2001-09-05 NRC1
 2001-09-06 NRC1
 2001-09-07 NRC1
 2001-09-08 NRC1
END REFERENCE CLOCK TABLE

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 1130 (2001 Sep 02 - Sep 08)
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
52154.50  155451  147224   -464119   2818  32  43  188  188 42  0 25 -3162 -1735
52155.50  152315  145660   -467136   3216  31  37  182  182 42  0 27 -3129 -1420
52156.50  149159  144106   -470460   3433  33  39  185  185 42  0 27 -2886 -1644
52157.50  145970  141988   -474130   3907  33  40  181  181 42  0 27 -3091 -1871
52158.50  143097  140098   -477840   3513  34  41  185  185 42  0 25 -2678 -1511
52159.50  140485  138589   -481145   3097  35  42  189  189 42  0 24 -2245 -1647
52160.50  138321  137365   -483921   2454  33  39  179  179 42  0 26 -2383 -1174
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 1130:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE               GPS week 1130 (2001 Sep 02 - Sep 08)
      01  9  2   01  9  3   01  9  4   01  9  5   01  9  6   01  9  7   01  9  8
prn   3d rss (cm)
  1       7          5          6          5          6          5          5   
  2       6          5         25         31                                7   
  3       7          4         11          8         10          6          6   
  4       4          4          6          7          5          5          6   
  5       3          6          3          4          5          3          3   
  6       8          4          6          8         12          8          6   
  7       4          5          6         11          7          4          7   
  8       6          4          4          8          5          4          7   
  9      13          7          7          9         10          7          5   
 10       5          4          8          8          8          4          6   
 11                 16          9          9         12         11         17   
 13       5          4          4          5         29         34          6   
 14      11          5          6         12         11          9         10   
 17                 12          9         13                                    
 18       6          5          7          9          7          4          3   
 20       7          7          8          8          8          7         12   
 21      13         10         10          8          6          8          3   
 22       6          6          5          8          9          7          4   
 23       7          8          9          7          7                     4   
 24       4          4          8          7          6          4          6   
 25       9          5         11         12          7          5          6   
 26       6          4          7          9          7          5          5   
 27       6          3          4          8          4          4          6   
 28       5          6         12         13          6          6          8   
 29      11         10          6         14         11          4         11   
 30       6          8          6          7          6          5          4   
 31       7          6          6          9          5          5          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 1130 (2001 Sep 02 - Sep 08)
 receiver/transmitter (* 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)
 |     |      |           |           |           |           |
 |___  |__    |_______    |_______    |___        |___        |__
ALBH   1.0   0.127      -0.148e-01    63.0        4.00        3.55    
ALGO*  7.0   0.120       0.142        37.8        4.60        3.54    
ALIC   1.0    158.      -0.491e-01    52.0        5.00        3.71    
AMC2   1.0   0.954e-01  -0.449        39.0        5.00        3.55    
AREQ   5.0   0.353e+05    176.        27.5        4.00        2.70    
ARTU   7.0   0.946e+04  -0.850e-01    35.2        4.17        2.56    
AUCK*  6.0    19.3      -0.950e-05    51.5        4.00        2.64    
BAHR*  7.0   0.540        764.        32.0        4.74        3.60    
BILI   6.9    12.5      -0.916e-01    39.7        5.15        2.66    
CAS1*  1.0    7.69      -0.306e-02    28.0        5.00        1.09    
CHAT*  1.0    23.3      -0.115e-01    62.0        5.00        3.06    
CIC1   5.9    91.9      -0.631e-02    55.7        4.00        3.04    
COCO   1.0    14.2      -0.164e-01    19.0        6.00        2.85    
CRO1   6.0   0.169        790.        37.5        4.89        3.65    
DARW   5.0    28.9      -0.132e-01    44.4        5.00        3.67    
DAV1*  6.6    28.6      -0.999e-02    29.9        3.64        1.09    
DRAO*  1.0   0.116       0.553        32.0        4.00        3.29    
EISL   5.9    183.      -0.858e-02    78.2        4.19        2.46    
FAIR*  6.1    2.11       -5.22          .         3.00       0.805    
FORT*  6.9   0.888e+04   -26.5        91.0        5.17        1.95    
GALA   3.0    23.8      -0.105        33.0        4.34        3.71    
GOUG   2.7   0.289e+06    507.        55.0        5.00        2.74    
GUAM*  6.8    30.9      -0.143        53.6        6.31        3.20    
HARB   3.0   0.120e+06    393.        62.3        4.00        2.33    
HOB2*  5.0   0.134       -2.68        31.4        4.83        3.41    
HRAO   4.0    30.4      -0.895e-01    70.2        4.54        3.80    
IISC   5.4    27.7      -0.130        56.0        6.00        2.37    
IRKT*  6.9   0.194       0.224        58.3        4.87        2.65    
KELY   3.4   0.139e+04  -0.184e-01    35.3        5.61        1.37    
KERG*  7.0    1.92        14.0        57.9        5.45        2.56    
KOKB*  6.9    2.89      -0.451e-01    48.2        5.86        1.20    
KOUR*  1.0    26.3      -0.107        47.0        7.00        4.74    
KUNM   2.6    69.0      -0.435e-01    85.2        5.00        2.41    
LAE1   2.0    26.7      -0.133        63.5        6.53        3.96    
LHAS*  4.0    13.2      -0.772e-02    33.5        4.51        3.73    
MAC1*  5.9    16.0      -0.401e-02    31.5        3.54        2.04    
MAD2   4.0    289.      -0.130        39.6        5.07        2.07    
MALI*  4.2    93.5        246.        67.7        7.00        2.11    
MAS1*  3.0    2.58        59.3        43.5        4.71        3.16    
MBAR   1.0    33.5      -0.113        29.0        5.00        2.82    
MCM4*  5.7   0.147e+05    62.5        63.5        4.18       0.989    
MSKU   5.9    39.1      -0.100        34.2        5.34        3.15    
NICO   1.0    13.0      -0.114e-01    25.0        4.00        3.82    
NLIB*  1.0    40.6       -1.13        55.0        5.00        2.27    
NOUM   0.9   0.289e+06    504.        72.0        4.00        2.03    
NPLD   1.0   0.145       -8.07        52.0        5.00        2.51    
NRC1   7.4    .           .           42.4        4.93        3.51    
NRIL   2.0    13.2      -0.889e-01    24.0        4.00        2.71    
NTUS   6.0    7.56      -0.134e-01    64.2        6.83        3.47    
NYA1   1.0   0.204       0.757        29.0        4.00        1.80    
NYAL*  4.0    80.1      -0.220        35.8        4.30        1.48    
OHIG*  7.0    15.1      -0.599e-02    46.4        4.00        2.41    
ONSA*  7.0    1.48        316.        42.9        4.58        2.49    
PERT*  2.0    23.9      -0.892e-01    61.5        5.00        3.05    
PIE1*  1.0   0.986e-01   0.840e-01    60.0        4.00        3.08    
PIMO   1.0    27.0      -0.859e-02      .         5.00        1.10    
SANT*  6.9    22.5      -0.104        19.1        5.00       0.990    
SELE   0.9    35.1      -0.847e-02    54.0        3.00        2.97    
SSIA   4.0   0.289e+06    504.        81.8        5.52        1.50    
SYOG   0.9   0.521        286.        60.0        5.00        1.94    
THTI   7.0    2.90        462.        77.2        5.59        2.15    
TIDB*  7.0   0.210        318.        28.7        5.03        3.51    
TSKB*  7.0    1.11       -1.89        59.4        4.66        2.97    
USNO   1.0   0.112      -0.152        50.0        6.00        3.84    
USUD   5.0   0.248        355.        30.6        5.22        3.34    
WHIT   4.0    33.4       -37.8        30.0        4.06        2.59    
WTZR*  6.9   0.155      -0.662        45.6        5.16        2.85    
YAR1*  6.0    363.       0.106        78.6        3.86        1.92    
YELL*  7.0   0.889e-01   0.209e-01    45.1        4.90        1.76    
PRN01  7.0    3.20        193.        48.2        5.00        2.24    
PRN02  5.0    3.00       -69.6        48.9        5.22        2.50    
PRN03  7.0    2.12        63.0        50.0        5.00        2.35    
PRN04  6.9   0.833        576.        51.0        5.00        2.32    
PRN05  7.0    4.01        313.        49.6        4.87        2.27    
PRN06  7.0    5.70      -0.103        48.6        4.86        2.37    
PRN07  7.0    1.75        397.        48.7        5.00        2.41    
PRN08  6.8    3.23        521.        47.3        5.00        2.17    
PRN09  6.6    2.70       -6.06        48.8        5.15        2.07    
PRN10  7.0    2.51        9.67        50.0        5.00        2.59    
PRN11  6.0   0.476        3.72        51.2        5.00        2.20    
PRN13  7.0   0.361       -4.82        52.7        5.16        2.26    
PRN14  7.0   0.247       -122.        49.5        4.87        2.24    
PRN17  2.8    4.99       -335.        53.7        5.68        2.07    
PRN18  7.0   0.436       -74.1        47.9        4.87        2.43    
PRN20  7.0   0.314       -96.3        50.2        5.00        2.29    
PRN21  6.9    3.27        4.80        49.5        4.73        2.35    
PRN22  7.0    2.73        129.        51.8        5.00        2.49    
PRN23  6.0    5.96        19.5        49.6        5.00        2.55    
PRN24  6.8    2.51        77.7        49.2        5.00        2.45    
PRN25  6.6    2.39        17.3        47.9        5.00        2.25    
PRN26  6.8   0.490e+05    292.        48.1        5.00        2.24    
PRN27  6.8    5.15        33.1        46.9        5.00        2.05    
PRN28  7.0   0.856       -17.3        51.2        4.60        2.27    
PRN29  7.0   0.806        629.        47.9        4.87        2.41    
PRN30  7.0    251.       -18.7        48.6        4.82        2.24    
PRN31  7.0    3.70        62.1        50.1        5.00        2.13    
_______________________
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
      01  9  2   01  9  3   01  9  4   01  9  5   01  9  6   01  9  7   01  9  8
prn   3d rss (cm)
  1     292        293        299        518        464        249        442   
  2     370        438        634        634                              657   
  3     270        491        363        236        218        332        321   
  4     392        314        593        539        300        466        331   
  5     365        312        330        306        318        365        293   
  6     517        548        503        471        615        372        408   
  7     283        277        260        283        117        263        339   
  8     317        302        328        389        397        352        321   
  9     355        395        297        411        262        242        287   
 10     180        206        175        165        205        235        238   
 11                311        310        265        230        369        404   
 13     310        231        230        283        410        374        227   
 14     316        240        276        234        315        212        220   
 17               1528        746        432                                    
 18     348        210        340        184        187        203        255   
 20     307        244        388        383        215        272        284   
 21    1044        758        352        700        370        720        636   
 22     433        270        583        301        241        309        354   
 23     582        510        732       1015        631                   323   
 24     931        339        577        361        412        288        338   
 25     522        588        417        439        394        534        359   
 26     346        211        285        328        319        242        201   
 27     571        490        423        494        602        548        623   
 28     281        244        217        291        359        418        254   
 29     131        373        664        188        311        450        339   
 30     386        211        235        222        223        292        234   
 31     794        706        431        167        335        209        283   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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