[IGSREPORT-8604] Wk 1129 JPL Analysis Report

David C Jefferson djeff at cobra.jpl.nasa.gov
Wed Sep 12 10:04:19 PDT 2001


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IGS Electronic Report   12 Sep 10:04:20 PDT 2001      Message Number 8604
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Author: D C Jefferson

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JPL ANALYSIS REPORT   GPS-WEEK 1129 (DAYS 238-244, DATES 2001 Aug 26 - Sep 01)
******************************************************************************

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/1129.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl11297.sum         This text file.
jpl11297.erp         Earth rotation parameters for GPS week 1129.
jpl11297.snx         Ground station coordinates for GPS week 1129, SINEX format.
jpl1129[0-6].sp3     GPS ephemerides for GPS week 1129, sp3 format.
jpl1129[0-6].tro     Ground station troposphere estimates for GPS week 1129.
jpl1129[0-6].clk     GPS and ground station clocks for GPS week 1129, RINEX.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 7.0 cm

A clock discontinuity (reset) of about 3 microseconds was detected for
PRN06 at approximately 06:10 on day 243.  Also, the drift of the clock
onboard PRN07 experienced a shift from about -34 ps/s to +40 ps/s at
approximately 19:00 on day 240.

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 1129.
WARNING: Data from PRN01, PRN18, PRN21 excluded day 238.
WARNING: Data from PRN29 excluded day 239.
WARNING: Data from PRN01, PRN21 excluded day 238.
WARNING: Data from HARB, HNLC, JAB1, KARR, KELY, MAUI, ONSA, PIMO, WLSN, YAR1            excluded day 238.
WARNING: Data from HARB, HNLC, JAB1, KELY, LBCH, MAUI, WLSN excluded day 239.
WARNING: Data from CAGL, HARB, JAB1, KOUR, LBCH, SSIA, WLSN excluded day 240.
WARNING: Data from HARB, LBCH, WLSN, WTZT, YAR1 excluded day 241.
WARNING: Data from CHUM, HARB, KELY, LBCH, TRAB, WLSN, WTZT, YAR1 excluded day           242.
WARNING: Data from CARR, CHUM, GUAM, HARB, HILO, HNLC, KOKB, LBCH, MALI, NOUM,           TRAB, WLSN, WUHN excluded day 243.
WARNING: Data from CARR, CHUM, HARB, HILO, JAB1, LBCH, WLSN excluded day 244.

JPL REFERENCE CLOCK TABLE                   GPS week 1129 (2001 Aug 26 - Sep 01)
 2001-08-26 USNO
 2001-08-27 USNO
 2001-08-28 NRC1
 2001-08-29 NRC1
 2001-08-30 NRC1
 2001-08-31 NRC1
 2001-09-01 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 1129 (2001 Aug 26 - Sep 01)
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
52147.50  173312  157297   -446225   2391  31  36  197  197 42  0 24 -1699 -2402
52148.50  171423  155197   -448701   2560  30  36  189  189 42  0 26 -1998 -2158
52149.50  169494  153429   -451299   2637  30  36  185  185 42  0 27 -2265 -1469
52150.50  167063  151954   -453627   2018  29  34  181  181 42  0 27 -2464 -1743
52151.50  164642  150687   -455945   2619  30  33  182  182 42  0 27 -2555 -1329
52152.50  161797  149858   -458751   2992  29  33  181  181 42  0 27 -2839  -933
52153.50  158634  148724   -461476   2459  30  36  182  182 42  0 27 -3270 -1311
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 1129:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE               GPS week 1129 (2001 Aug 26 - Sep 01)
      01  8 26   01  8 27   01  8 28   01  8 29   01  8 30   01  8 31   01  9  1
prn   3d rss (cm)
  1                  7         10          5          4          3          5   
  2       6          7         14          6         10         10          6   
  3       6          7          9          9          8          4          8   
  4       4          4          7          6          8          9          8   
  5       8         10          5          5          5          3          4   
  6       9          4          4          5          7          8          7   
  7       4          4          7          6          8          5          6   
  8       4          7          7          8          9          8          9   
  9       9          5          9          8          7          5          8   
 10       6          5          6          8          7          7          8   
 11       7          9          9          7         10         15         22   
 13      14          8          6          7          7          7          6   
 14      11          6          6          6         18          9          9   
 17      12         14          9         10         15         20         13   
 18                  7          6          6          5          4          9   
 20      10          7          9          8          8          7          8   
 21                 12         10          6          9          7          5   
 22       6          4          6          4          8          4          5   
 23      10         16          7          6          5          8         10   
 24       6          4          6          6         18         12          7   
 25      25         11          9          6          8         11          7   
 26       7          4          6          5          3          4          6   
 27       6          9          7         10          9          7          6   
 28       7         12         12          6          8          8          8   
 29      14                     4          5         16         10          9   
 30       6          7          3         16         13          6          6   
 31       7          9          9          5          7          5         10   
_______________________
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 1129 (2001 Aug 26 - Sep 01)
 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   0.113       0.752e-01    37.4        4.76        3.43    
ALIC   4.0    140.      -0.402e-01    51.0        5.00        3.59    
ARTU   6.0   0.143e+05  -0.155        35.0        4.18        2.44    
AUCK*  6.0    20.1       0.315e-03    46.3        4.00        2.54    
BAHR*  7.0   0.524        764.        31.6        5.31        3.12    
BILI   5.9   0.665e+05    6.60        40.2        5.00        2.56    
CAS1*  2.0    9.50      -0.943e-04    29.0        4.00        1.13    
CHAT*  1.0    23.6      -0.293e-01    62.0        5.00        3.00    
CHUM   1.0    21.8       0.884e-02    54.0        7.00        2.95    
CIC1   6.0    54.4      -0.141e-01    45.0        4.00        3.21    
CRO1   6.0   0.297        790.        38.5        5.34        3.42    
DAV1*  4.7    23.6      -0.145e-01    29.4        4.41        1.41    
EISL   6.8    93.4      -0.818e-02    66.0        5.21        2.52    
FAIR*  6.1    1.94       -5.19          .         3.35       0.980    
FORT*  7.0   0.764e+04   -4.38        87.7        5.03        1.79    
GALA   6.9    20.6      -0.103        34.9        4.60        3.35    
GOUG   2.8   0.289e+06    503.        56.0        4.66        2.54    
GUAM*  4.8    28.4      -0.143        52.1        6.83        3.18    
HNLC   2.0    35.9      -0.125        39.5        7.00        3.51    
HOB2*  1.0   0.924e-01  -0.195e-01    32.0        5.00        3.19    
HRAO   7.0    67.1      -0.909e-01    71.4        4.45        3.24    
IISC   2.9    24.3      -0.116        55.3        6.37        2.31    
IRKT*  6.5    3.63       0.244        59.3        5.00        2.58    
JAMA   1.0    20.5      -0.976e-01    38.0        6.00        3.42    
JPLM   1.0    3.52        236.        53.0        3.00        2.66    
KELY   3.8   0.497e+04   0.697        36.0        5.00        1.72    
KERG*  7.0    2.00        14.9        57.9        5.63        2.35    
KOKB*  3.8    4.37       0.646        42.8        5.26        1.18    
KOUR*  0.8    18.7      -0.108        43.0        7.00        2.95    
KUNM   2.0    57.0      -0.323e-01    86.1        5.52        2.06    
LAE1   6.9    24.7      -0.131        61.9        6.63        3.51    
LHAS*  5.0    13.1      -0.148e-01    33.2        4.62        3.82    
MAC1*  5.8    16.0      -0.496e-02    33.3        3.20        1.78    
MALI*  4.5    36.0        264.        68.4        7.00        2.07    
MAS1*  7.0    3.14        59.3        43.0        4.88        2.80    
MAUI   1.0    39.2      -0.126        37.0        4.00        3.08    
MBAR   2.0    32.4      -0.113        35.1        5.53        1.45    
MCM4*  6.7   0.427e+05    200.        55.2        4.48        1.03    
METS   1.0   0.307        967.        24.0        4.00        2.67    
MSKU   1.0    36.2      -0.119        34.0        5.00        3.44    
NICO   2.0    12.3      -0.255e-01    24.5        5.00        3.72    
NKLG   5.9   0.268e+06    499.        68.9        6.00        1.48    
NOUM   1.0   0.289e+06    502.        72.0        5.00        1.87    
NRC1   5.5    .           .           40.8        4.43        3.54    
NRIL   5.0    11.4      -0.900e-01    22.8        4.00        2.45    
NTUS   7.0    7.61      -0.180e-01    64.0        6.73        3.50    
NYA1   6.0   0.131       0.769        29.7        4.07        1.59    
NYAL*  1.0   0.223      -0.526        37.0        4.00        1.40    
OHIG*  7.0    14.2      -0.750e-02    46.3        4.00        2.30    
ONSA*  5.8    1.73        316.        43.7        4.84        2.46    
PETP   1.0    13.0      -0.916e-01    45.0        6.00        2.89    
PIMO   1.9    29.1      -0.630e-02      .         4.00        1.08    
POL2   1.0   0.428e+05   -6.88          .         4.00        2.86    
REYK   2.0    9.78      -0.256e-02    55.2        6.00        1.91    
SANT*  6.9    20.5      -0.100        20.1        5.00       0.912    
SELE   3.9    39.9      -0.867e-02    53.0        4.00        3.09    
SEY1   0.9    57.3      -0.230e-01    76.0        6.00        1.04    
SYOG   1.8   0.905        286.        41.0        5.00        1.91    
THTI   7.0    2.81        256.        80.9        5.00        2.07    
TIDB*  7.0   0.190        318.        29.4        5.16        3.62    
TIXI   1.0    11.6      -0.871e-01    41.0        4.00        2.38    
TSKB*  7.0    1.53       -1.83        60.3        4.88        2.84    
USNO   2.0    .           .           52.5        5.54        3.86    
USUD   1.0   0.210        355.        33.0        7.00        2.83    
WHIT   2.0    17.0       -24.6        28.0        4.55        2.36    
WTZR*  6.9   0.230      -0.393        46.2        5.15        2.78    
WUHN   4.0    27.1      -0.119        73.7        6.00        3.77    
YAR1*  2.9    560.       0.468        75.1        3.37        1.58    
YAR2   4.0    4.95      -0.116e+05    26.0        4.84        3.04    
YELL*  7.0    37.6       0.202        42.7        4.87        1.76    
PRN01  6.0    4.62        193.        46.8        5.00        2.39    
PRN02  7.0    2.45       -66.4        49.2        5.00        2.52    
PRN03  7.0    2.41        61.0        48.2        5.00        2.26    
PRN04  6.8   0.915        587.        52.1        5.16        2.26    
PRN05  7.0    3.53        312.        50.7        5.00        2.25    
PRN06  6.9    244.       -2.33        47.8        5.00        2.14    
PRN07  7.0    149.        378.        49.5        5.00        2.32    
PRN08  6.8    2.61        507.        48.3        5.61        2.17    
PRN09  6.6    2.73       -4.99        47.0        5.00        1.91    
PRN10  7.0    2.70        9.31        51.3        5.00        2.53    
PRN11  7.0   0.422        3.60        50.0        5.00        2.22    
PRN13  7.0   0.316       -4.58        54.2        5.15        2.25    
PRN14  7.0   0.359       -122.        50.7        5.00        2.20    
PRN17  6.5    4.72       -407.        50.3        5.15        2.05    
PRN18  5.9   0.499       -74.0        48.9        4.85        2.35    
PRN20  7.0   0.298       -94.5        49.4        5.00        2.31    
PRN21  5.9    3.92        4.77        52.9        5.00        2.13    
PRN22  7.0    2.49        91.0        52.2        5.00        2.44    
PRN23  6.9    6.09        19.1        48.9        5.00        2.37    
PRN24  6.8    2.90        76.0        49.1        5.30        2.47    
PRN25  6.6    2.40        17.0        49.1        5.30        2.07    
PRN26  7.0   0.787        566.        49.9        5.00        2.27    
PRN27  6.8    4.37        32.3        47.8        5.52        2.14    
PRN28  7.0    1.07       -15.5        49.4        5.15        2.40    
PRN29  6.0   0.851        628.        49.4        5.00        2.38    
PRN30  6.7    6.88       -21.0        50.9        4.83        2.08    
PRN31  7.0    3.59        60.9        50.0        5.00        2.19    
_______________________
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  8 26   01  8 27   01  8 28   01  8 29   01  8 30   01  8 31   01  9  1
prn   3d rss (cm)
  1                467        342        378        349        441        273   
  2     351        563        357        496       1330        509        276   
  3     290        181        334        267        227        368        381   
  4     478        398        524        482        513        440        614   
  5     264        275        402        495        406        423        401   
  6     448        531        479        436        474        513        512   
  7     341        499        361        320        352        225        230   
  8     234        314        224        338        325        379        508   
  9     299        352        353        237        416        346        338   
 10     264        341        223        228        238        478        208   
 11     266        295        276        389        581        526        326   
 13     257        256        242        280        343        326        359   
 14     308        180        204        337        250        298        262   
 17     890       1687       1501       1458       1474       1171       1281   
 18                307        546        221        226        269        229   
 20     245        280        183        200        252        296        319   
 21                325        736        651        254        535        301   
 22     364        430        359        261        305        370        273   
 23     821        327        555        632        614        496        514   
 24    1438        521        632        668        855        893        670   
 25     428        419        309        435        389        438        606   
 26     158        240        226        477        439        299        348   
 27     391        408        669        601        616        786        590   
 28     257        438        269        330        322        389        326   
 29     169                   240        207        197        177        214   
 30     248        235        220        234        488        270        339   
 31     318        310        325        275        179        381        423   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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