[IGSREPORT-8515] Wk 1125 JPL Analysis Report

David C Jefferson djeff at cobra.jpl.nasa.gov
Fri Aug 10 11:13:54 PDT 2001


******************************************************************************
IGS Electronic Report   10 Aug 11:13:55 PDT 2001      Message Number 8515
******************************************************************************

Author: D C Jefferson

******************************************************************************
JPL ANALYSIS REPORT   GPS-WEEK 1125 (DAYS 210-216, DATES 2001 Jul 29 - Aug 04)
******************************************************************************

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/1125.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl11257.sum         This text file.
jpl11257.erp         Earth rotation parameters for GPS week 1125.
jpl11257.snx         Ground station coordinates for GPS week 1125, SINEX format.
jpl1125[0-6].sp3     GPS ephemerides for GPS week 1125, sp3 format.
jpl1125[0-6].tro     Ground station troposphere estimates for GPS week 1125.
jpl1125[0-6].clk     GPS and ground station clocks for GPS week 1125, RINEX.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 7.0 cm

According to the file ftp://tycho.usno.navy.mil/pub/gps/gpsnanu.2001, PRN22
was unusable beginning day 209 23:58 UT until further notice.  This satellite
was used in all our analyses this week except day 212.  The clock onboard
this satellite was observed to have non-linear behavior on days 210 and 211.

This week, we add one new candidate global station.  As with other sites,
this site is given the opportunity to participate in the orbit and clock
solution as the global site distribution varies.  The following nominal
coordinates were assumed:
                                    X (m)           Y (m)           Z (m)
MOBN (Obninsk, Russian Fed.)   2936432.1704    2178364.5478    5208858.2553

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 excluded the entire GPS week 1125.
WARNING: Data from PRN22 excluded day 212.
WARNING: Data from PRN19 excluded day 216.
WARNING: Data from CARR, DRAG, ESTI, LBCH, PETP, TOW2, TRAB, WLSN excluded day           210.
WARNING: Data from CARR, LBCH, NVSK, PETP, TORP, UNSA, WES2, WLSN excluded day           211.
WARNING: Data from CARR, LBCH, NRC1, PETP, TORP, UNSA, WLSN excluded day 212.
WARNING: Data from HARV, LBCH, NKLG, TORP excluded day 213.
WARNING: Data from EPRT, LBCH, NKLG, NRC2, PETP, WLSN excluded day 214.
WARNING: Data from BRUS, PETP excluded day 215.
WARNING: Data from HOB2, MAUI, PETP, WLSN excluded day 216.

JPL REFERENCE CLOCK TABLE                   GPS week 1125 (2001 Jul 29 - Aug 04)
 2001-07-29 NRC1
 2001-07-30 USNO
 2001-07-31 USNO
 2001-08-01 USNO
 2001-08-02 USNO
 2001-08-03 NRC1
 2001-08-04 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 1125 (2001 Jul 29 - Aug 04)
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
52119.50  238208  222447   -417651  -2698  31  37  139  139 42  0 28 -1766 -3073
52120.50  236513  219344   -414925  -2754  31  37  143  143 42  0 28 -1520 -2396
52121.50  235259  216884   -412130  -2836  29  36  141  141 42  0 27  -925 -2366
52122.50  234124  214721   -409436  -2551  28  33  136  136 42  0 28 -1462 -2126
52123.50  232284  212650   -407042  -2236  29  33  139  139 42  0 28 -2282 -2026
52124.50  229581  210293   -405019  -1810  30  39  144  144 42  0 28 -2824 -2761
52125.50  226927  207343   -403524  -1180  30  38  135  135 42  0 27 -2707 -2925
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 1125:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE               GPS week 1125 (2001 Jul 29 - Aug 04)
      01  7 29   01  7 30   01  7 31   01  8  1   01  8  2   01  8  3   01  8  4
prn   3d rss (cm)
  1       6          4          5          5          6          7          5   
  2       5          5          4          6          3          4          6   
  3      12         13         11          7          7          4          9   
  4       8          7          8          7          5          4          6   
  5       5          5          8          5          6          4          4   
  6      17          6          7          8          4          5          4   
  7       6          4          7          4          3          4          4   
  8       4          6          7          3          4          7          8   
  9       6          3          5          8          5          4          5   
 10       7          7          8          6          4          7          4   
 11       9          9          8         11         10          6          9   
 13      15          6          8          7          6          7          6   
 14       6         10          6          5          4          7          4   
 17       8         18          7          5          5          5          6   
 18       6         11         10          5          7          6          9   
 19      20          9         17         18          9          8              
 20       6          7          8          5          7         18          8   
 21       7         11         10          7          8          7          9   
 22      21          4                     6          6          8          8   
 23      23         22         15         14         14         11          7   
 24      22         24          9         10          6          6          5   
 25       8          9          6          7          6          7          7   
 26       6          7          4         10          6          4          7   
 27       5          4         10          9          6          8          9   
 28       7          5          6          9          5          6          8   
 29       6          9         10          4          7          9          5   
 30       4          6          6          3          5          4          3   
 31      11         13         13          5          5         17         11   
_______________________
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 1125 (2001 Jul 29 - Aug 04)
 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)
 |     |      |           |           |           |           |
 |___  |__    |_______    |_______    |___        |___        |__
ALGO*  7.0   0.832e-01   0.948        37.2        4.63        3.55    
ALIC   3.9    141.      -0.480e-01    51.0        5.00        3.83    
AREQ   1.0    28.2        113.        24.0        4.00        3.42    
ARTU   2.9    11.6      -0.801e-01    35.7        5.00        2.62    
AUCK*  5.9    20.7      -0.369e-03    41.2        4.37        2.99    
BAHR*  5.8   0.484        764.        32.3        5.33        3.94    
BILI   6.0    13.6      -0.852e-01    41.2        5.52        2.76    
BJFS   1.0   0.764        286.        19.0        5.00        3.44    
CAS1*  1.0    10.4      -0.148e-01    28.0        4.00        1.44    
CHAT*  1.0    28.4       0.473e-02    62.0        5.00        3.11    
CIC1   7.0    44.6      -0.870e-02    41.0        4.00        3.15    
COCO   1.0    31.7      -0.981e-01    39.0        5.00        3.09    
CRO1   5.0   0.408        737.        38.0        5.42        3.53    
DAV1*  5.7    21.6      -0.407e-02    29.7        4.00        1.40    
EISL   6.6    42.4      -0.282e-02    57.1        5.00        2.33    
FAIR*  6.6   0.382e+07  -0.420e+04      .         3.89       0.913    
FORT*  2.9   0.141       0.289        77.9        5.00        1.78    
GALA   5.7    18.1      -0.794e-01    32.4        4.37        3.69    
GOUG   0.8   0.290e+06    479.        43.0        5.00        2.66    
GUAM*  7.0    20.1      -0.108        57.8        7.31        3.49    
HARB   1.0    5.93        927.        47.0        4.00        2.50    
HOB2*  1.0   0.401       -428.        43.0        5.00        2.88    
HRAO   5.8    21.9      -0.708e-01    71.8        4.00        3.49    
IISC   7.0    27.6      -0.972e-01    56.0        6.15        2.89    
IRKT*  5.8    43.5       0.142        57.9        5.12        2.52    
JAMA   2.0    19.6      -0.904e-01    39.0        6.52        3.58    
KELY   4.9   0.559e+05   0.296        35.6        5.00        1.54    
KERG*  7.0    1.83        18.3        47.1        5.15        2.46    
KOKB*  6.9    1.01       0.958        40.0        6.19        1.21    
KOUR*  1.8    22.9      -0.856e-01    43.3        6.00        3.80    
KUNM   7.0    57.8      -0.193e-01    73.8        6.03        2.38    
LAE1   7.0    19.8      -0.985e-01    59.7        6.44        4.25    
MAC1*  5.6    17.0      -0.547e-02    31.5        3.54        2.30    
MALI*  5.9    46.1        315.        68.0        7.51        2.39    
MANA   1.0   0.289e+06    495.        67.0        7.00        2.04    
MAS1*  6.8    2.85        59.2        43.7        4.47        2.76    
MAW1   1.0    14.7      -0.143e-01    35.0        4.00        1.64    
MCM4*  6.5   0.169e+05    28.0        44.5        4.60        1.37    
METS   1.0    1.07        970.        50.0        4.00        2.67    
MSKU   2.0    30.1      -0.815e-01    35.0        6.00        3.31    
NICO   1.0    17.5       0.669e-03    25.0        5.00        3.85    
NKLG   5.0   0.292e+06    486.        68.3        6.00        1.62    
NOUM   1.0   0.289e+06    514.        58.0        7.00        1.77    
NRC1   3.4    .           .           46.0        4.36        3.50    
NRIL   5.0    11.2      -0.830e-01    21.6        5.61        2.24    
NTUS   5.9    7.11      -0.123e-01    61.8        6.86        4.34    
NYA1   5.8    313.       0.507        32.0        4.20        1.62    
NYAL*  1.0   0.193      -0.793        55.0        4.00        2.03    
OHIG*  7.0    13.6      -0.254e-03    50.9        4.31        2.33    
ONSA*  7.0    1.06        318.        43.2        4.90        2.65    
PERT*  1.0    19.9      -0.579e-01    59.0        5.00        3.07    
PETP   1.0    13.1      -0.751e-01    47.0        7.00        2.65    
PIMO   6.9    26.0      -0.779e-02    56.0        4.73        1.05    
POL2   1.0   0.145e+06   -81.1          .         4.00        2.74    
RAMO   0.9    22.5      -0.886e-01    70.0        6.00        2.72    
SANT*  6.8    22.5      -0.739e-01    24.7        5.00       0.980    
SELE   3.9    51.5      -0.118e-01    45.2        3.77        3.32    
SEY1   1.0    33.5      -0.475e-03    64.0        7.00        1.90    
THTI   7.0   0.198e+05    453.        81.6        5.87        2.15    
TIDB*  7.0   0.171        318.        27.7        5.00        3.74    
TIXI   1.0    11.0      -0.821e-01    41.0        6.00        2.44    
TRAB   1.0    13.5       0.336e-01    43.0        6.00        2.71    
TSKB*  7.0    1.34       -1.63        54.9        4.72        2.80    
URUM   1.0    23.2      -0.180e-01    28.0        6.00        2.86    
USNO   4.5    .           .           42.0        5.00        3.91    
USUD   1.0   0.256        415.        31.0        5.00        3.15    
WHIT   1.0    16.1       -69.5        39.0        4.00        2.79    
WTZR*  7.0   0.219      -0.520        46.4        5.47        3.03    
YAR1*  2.6    280.       -1.38        67.7        5.00        1.92    
YAR2   3.9    4.60      -0.116e+05    29.6        4.00        3.29    
YELL*  7.0   0.114       0.776        44.2        5.16        1.77    
ZECK   2.0    39.8      -0.177e-02    32.0        4.53        3.68    
PRN01  7.0    4.14        188.        46.7        5.16        2.33    
PRN02  7.0    2.96       -52.6        49.7        5.00        2.44    
PRN03  7.0    2.21        52.7        47.5        5.00        2.26    
PRN04  6.8   0.840        627.        50.5        5.15        2.36    
PRN05  7.0    3.21        308.        47.4        5.15        2.47    
PRN06  7.0    8.46       -2.27        45.2        5.30        2.20    
PRN07  7.0    1.92        446.        48.7        5.00        2.44    
PRN08  7.0    3.37        446.        47.9        5.00        2.36    
PRN09  7.0    2.48      -0.793        45.3        5.00        2.17    
PRN10  7.0    2.27        7.83        54.5        5.15        2.55    
PRN11  7.0   0.374        3.13        48.7        5.31        2.21    
PRN13  7.0   0.405       -3.76        52.2        5.31        2.22    
PRN14  7.0   0.315       -119.        49.2        5.00        2.40    
PRN17  6.7    5.00        317.        50.8        5.31        2.26    
PRN18  7.0   0.483       -73.7        47.5        5.00        2.37    
PRN19  6.0    3.86        617.        43.0        4.19        2.36    
PRN20  7.0   0.257       -87.8        48.6        5.30        2.44    
PRN21  7.0    3.50        4.49        50.3        5.00        2.30    
PRN22  5.6    59.2       -4.35        45.3        4.19        2.23    
PRN23  7.0    6.26        17.4        49.9        5.15        2.29    
PRN24  6.6    2.05        69.4        48.3        5.73        2.44    
PRN25  7.0    1.97        16.0        47.5        5.31        2.47    
PRN26  7.0   0.778        552.        49.5        5.00        2.30    
PRN27  7.0    4.37        28.9        48.6        5.00        2.29    
PRN28  7.0   0.992       -8.52        49.9        5.00        2.34    
PRN29  7.0   0.875        624.        48.4        5.14        2.44    
PRN30  7.0    1.46       -29.7        46.2        5.00        2.36    
PRN31  7.0    4.21        56.2        49.0        5.15        2.15    
_______________________
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  7 29   01  7 30   01  7 31   01  8  1   01  8  2   01  8  3   01  8  4
prn   3d rss (cm)
  1     777        582        623        469        415        417        384   
  2     180        282        299        173        221        184        174   
  3     333        228        294        493        459        235        180   
  4     558        318        329        524        366        441        400   
  5     228        245        248        282        322        332        427   
  6     729        549        746        500        682        593        669   
  7     409        532        406        497        498        568        396   
  8     214        300        230        270        284        251        237   
  9     258        324        218        306        349        238        308   
 10     261        334        347        351        474        333        456   
 11     280        301        328        312        268        283        261   
 13     195        264        201        197        208        265        252   
 14     214        199        223        251        280        265        255   
 17     255        262        373        398        349        181        789   
 18     635        480        528        297        683        260        230   
 19     257        398        244        344        320        355              
 20     250        211        264        291        265        336        367   
 21     555        343        792        536        565        545        893   
 22     235       1366                  2587       1746       1711       1023   
 23     711       1042        474        632        535        909        598   
 24     201        409        884        947        348        508        686   
 25     211        251        217        272        385        438        400   
 26     293        348        315        388        322        278        274   
 27     346        311        316        404        434        357        367   
 28     299        380        372        339        278        324        282   
 29     235        523        431        219        357        468        235   
 30     247        213        196        259        220        249        271   
 31     451        474        330        268        304        432        352   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

global:   algo alic areq artu auck bahr bili bjfs cas1 chat cic1 coco cro1 dav1 eisl fair fort gala goug guam harb hob2 hrao iisc irkt jama kely kerg kokb kour kunm lae1 mac1 mali mana mas1 maw1 mcm4 mets msku nico nklg noum nrc1 nril ntus nya1 nyal ohig onsa pert petp pimo pol2 ramo sant sele sey1 thti tidb tixi trab tskb urum usno usud whit wtzr yar1 yar2 yell zeck



More information about the IGSREPORT mailing list