Subject: [IGSREPORT-5038] Wk 0961 JPL Analysis Report
From: D C Jefferson
Date: Tue, 23 Jun 1998 10:38:57 PDT

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IGS Electronic Report    Tue Jun 23 10:38:57 PDT 1998      Message Number 5038
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Author: D C Jefferson
Subject: Wk 0961 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0961 (DAYS 158-164, DATES 1998 Jun 07 - Jun 13)
******************************************************************************

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/0961.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09617.sum         This text file.
jpl09617.erp         Earth rotation parameters for GPS week 961.
jpl09617.snx         Ground station coordinates for GPS week 961, SINEX format.
jpl0961[0-6].sp3     GPS ephemerides for GPS week 961, sp3 format.
jpl0961[0-6].tro     Ground station troposphere estimates for GPS week 961.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 7.0 cm

According to the file nanu1998.mes obtained from the IGS CBIS, PRN04 was
unusable on day 161.  Data from this satellite did not meet our initial
orbit convergence criteria this day, and have been excluded accordingly.

According to IGS Mail No. 1919, the receiver at TAHI (Papeete, Tahiti) was
moved to a new location and renamed THTI on day 110 (GPS week 954, day 1; 
98apr20).  Although data from the new station were used in the analyses of
weeks 959 and 960, statistics reported for the site in our Analysis Center
weekly reports and SINEX files (jpl09597.sum, jpl09597.snx, jpl09607.sum,
jpl09607.snx) were incorrectly labeled "TAHI".  The SINEX files have been
corrected, and resubmitted to the CDDIS and the IGSCB.  As usual, THTI is
given the opportunity to participate in the orbit and clock solution as the
global site distribution varies.  The following nominal coordinates are
assumed for the weeks indicated:

                  X (m)          Y (m)          Z (m)
     THTI: -5245195.2928  -3080472.2325  -1912825.4175  (wks 959, 960)
     THTI: -5246568.8260  -3076989.4730  -1913777.5080  (begin wk 961)

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 IISC excluded day 158.
WARNING: Data from NYAL excluded day 160.
WARNING: Data from PRN04 excluded day 161.
WARNING: Data from KSTU excluded day 162.
WARNING: Data from KSTU excluded day 163.
WARNING: Data from KSTU, MAS1 excluded day 164.

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 961 (1998 Jun 07 - Jun 13)
     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
50971.50 -10366  40475   -93249  1140    2    2     8      8 37 25 27   34  190 
50972.50 -10312  40634   -94369  1100    2    2     8      8 37 22 27   85  195 
50973.50 -10241  40781   -95454  1071    2    2     8      8 37 22 27  103  212 
50974.50 -10150  40952   -96510  1040    2    2     8      8 37 23 26  120  215 
50975.50 -10048  41114   -97520   981    2    2     8      8 37 23 27   92  185 
50976.50  -9993  41270   -98506   990    2    2     8      8 37 23 27   48  179 
50977.50  -9956  41390   -99501  1000    2    2     8      8 37 24 27   41  158 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 961:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 961 (1998 Jun 07 - Jun 13)
      98  6  7   98  6  8   98  6  9   98  6 10   98  6 11   98  6 12   98  6 13
prn   3d rss (cm)
  1       9          9          6          7          9          6         13   
  2       7          9          6          7          7          7          7   
  3       4          4          7         11          7          7          6   
  4       9          5          5                     8          9          5   
  5      23         20         10         10          8          7         10   
  6       9         23         20          8          8         24         22   
  7       6          6          5          6          7          4          7   
  8      10         11          7          5          5          4         18   
  9      10          7          8          5          4          5          5   
 10      16          8         14         12          7          4          9   
 13       9          4          5         10          7          3         10   
 14       5          9          8          7         11          8         18   
 15       5          7          6         14          7         18          9   
 16       8         11         10          9          8          4          6   
 17       7         11          7         11          8          8          7   
 18       7          9          5         10          9          4          6   
 19       8         10         10         10          8          7          4   
 21       5          5          5          7          6          7          5   
 22       6          7          7          9         13          7         11   
 23       9         14         14         10          5          5          9   
 24      14          7          5          7          7          8          6   
 25       9         15          8          7          8          9          8   
 26      14         11          5          4          4          4          5   
 27       6          7          4          7          7          5          8   
 29       6         10         16         12          9          7          7   
 30      29         18         12          6          4          7          7   
 31       3         13          6          4          4          6          6   
_______________________
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 961 (1998 Jun 07 - Jun 13)
 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    .126        1.09        59.2        4.90        2.78    
ASC1   7.0    290.       -.284        71.9        5.45        1.40    
AUCK   1.9    96.9       -.295        43.5        4.53        2.61    
BAHR   5.9    .620        129.        44.7        4.69        3.31    
BARB   3.6    99.8       -.332        31.0        6.49        3.09    
BOGT    .8    159.       -.282        52.0        5.00        1.43    
BRUS   2.0    .383        1.22        58.5        5.51        2.59    
CAS1   1.8    8.10       -.108e+04    36.5        5.00        1.60    
CHAT   1.0    105.       -.282        76.0        6.00        2.43    
COCO   1.9    120.       -.253e+05    49.9        6.55        2.45    
CRO1   2.0    166.       -.261        58.0        6.10        1.48    
DAV1*  6.8    130.       -.267          .         4.57        1.54    
DGAR   6.9    129.       -.269        68.5        5.81        1.68    
EISL   7.0    208.       -.296        51.0        5.30        3.01    
FAIR*  7.0    .146       -.607e-01    47.4        4.73        2.42    
FORT*  6.9    20.9       -.185        73.3        6.03        1.63    
GALA   5.9    118.       -.275        71.4        5.18        1.70    
GOL2*  7.0    .126       -.569        50.4        4.87        2.19    
GRAZ*  1.0    .656        .831e-01    79.0        5.00        2.64    
GUAM*  7.0    111.       -.275        62.9        6.60        2.33    
HARK*  7.0    8.75       -7.38        50.6        4.00        2.88    
HRAO   4.0    68.4       -.924        32.5        3.77        2.84    
IISC   4.0    94.6       -.275        70.8        5.77        2.37    
IRKT*  5.8    .315       -.115        64.3        4.84        2.52    
KELY    .8    97.1       -.275          .         5.00        1.24    
KERG*  6.9    930.        625.          .         5.00        2.57    
KIT3*  6.9    166.       -.280        68.4        5.00        2.34    
KOKB*  7.0    .148       -.701        78.8        5.46        2.72    
KWJ1*  6.9    .206e+04   -.284        65.7        6.72        1.71    
LHAS*  2.0    102.       -.267          .         5.00        2.49    
MAC1*  5.6    90.6       -.278        37.0        4.51        2.31    
MAD2*  7.0    305.       -1.25          .         6.44        1.56    
MAG0   4.6    .619e+06    431.        31.6        4.46        2.31    
MALI*  7.0    31.7       -529.        75.9        7.00        1.92    
MAS1*  6.0    62.1       -.151        55.9        4.36        2.14    
MATE*  1.0    .170        1.81        46.0        5.00        3.06    
MCM4   5.0    84.6       -.274        34.4        4.41        1.36    
MEDI   1.9    .337       -3.64        33.9        5.49        3.06    
MKEA   2.0    .171       -.209        50.5        5.00        2.68    
NTUS   3.7    .236e+04   -.366        99.5        5.55        1.49    
NYA1   5.7    166.       -.759        44.1        5.00        2.16    
OHIG*   .9    279.       -.282        56.0        6.00        1.88    
ONSA*  5.7    .144       -1.46        45.9        4.02        2.20    
PERT*   .8    241.       -.899        55.0        7.00        2.33    
PETR   1.0    93.3       -.280        81.0        5.00        2.43    
SANT*  6.9    .141e+04    1.92        41.4        5.30        1.99    
TID2*  7.0    .187       -.285        37.8        5.16        2.50    
TSKB*  7.0    1.57       -2.49        50.2        4.87        3.01    
USNO   7.6    .           .           54.9        5.62        2.60    
USUD   3.0    265.        1.24        44.4        4.36        2.69    
WTZR*  6.3    .238       -1.77        63.2        4.36        2.42    
WUHN   3.8    .402e+05   -202.        54.7        5.27        2.31    
YAR1*  5.8    90.9       -.269        35.4        4.71        2.43    
YELL*  7.0    .285       -.467        49.6        5.15        1.75    
PRN01  7.0    84.0        49.5        54.9        5.46        2.01    
PRN02  6.9    78.8       -497.        58.2        5.00        2.14    
PRN03  7.0    79.5        17.3        55.0        5.15        2.44    
PRN04  5.9    79.1        30.9        55.0        5.00        2.16    
PRN05  6.9    80.8        151.        57.5        5.00        2.10    
PRN06  7.0    80.5       -.691        61.3        5.30        1.92    
PRN07  7.0    83.3        780.        55.8        5.00        2.24    
PRN08  7.0    80.1        549.        55.0        5.15        2.04    
PRN09  6.9    79.1       -45.1        57.4        5.00        2.24    
PRN10  6.9    82.4        22.6        61.5        5.00        2.01    
PRN13  7.0    79.5       -163.        57.6        5.00        2.24    
PRN14  7.0    83.0        30.6        54.8        5.15        2.27    
PRN15  7.0    3.09        565.        58.2        5.00        2.32    
PRN16  7.0    81.6        65.4        58.9        5.00        2.18    
PRN17  7.0    84.2       -182.        55.3        5.00        2.09    
PRN18  7.0    80.6        14.3        56.1        5.00        2.17    
PRN19  7.0    81.5       -1.44        56.0        5.00        2.13    
PRN21  6.9    81.5        43.1        58.2        5.15        2.08    
PRN22  6.9    80.2        1.40        54.9        5.45        2.18    
PRN23  7.0    83.2        .189        62.3        5.74        2.04    
PRN24  6.9    82.3        834.        53.6        5.00        2.20    
PRN25  7.0    80.8       -6.76        50.2        5.16        2.33    
PRN26  7.0    79.9        118.        54.6        5.15        2.12    
PRN27  7.0    80.7        30.8        57.6        5.00        2.04    
PRN29  7.0    80.4        504.        54.7        5.15        2.18    
PRN30  6.8    80.1       -42.7        53.4        5.29        2.08    
PRN31  7.0    80.0        4.14        53.5        5.16        2.47    
_______________________
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
      98  6  7   98  6  8   98  6  9   98  6 10   98  6 11   98  6 12   98  6 13
prn   3d rss (cm)
  1     288        287        422        437        328        331        350   
  2     327        516        566        434        280        564        314   
  3     274        312        427        354        564        401        265   
  4     330        206        485                   715        617        359   
  5     356        603        487        546        461        497        474   
  6     651        728        578        567        809        557        425   
  7     496        232        364        336        688        433        312   
  8     558        757        494        523        458        762        599   
  9     384        600        510        426        455        360        433   
 10     317        348        423        486        394        370        397   
 13     357        184        214        275        294        236        259   
 14     280        274        336        533        384        459        631   
 15     290        200        277        465        361        378        324   
 16     450       1190       1066        381        408        423        454   
 17     219        213        249        274        281        385        470   
 18     393        270        318        304        329        414        563   
 19     910        357        297        438        330        390        325   
 21     227        220        205        401        285        388        288   
 22     409        539        503        595        538        476        442   
 23     804        967       1057        822        786        661        676   
 24     241        253        313        371        303        604       3428   
 25     293        450        539        413        477        383        532   
 26     133        158        167        396        334        252        219   
 27     240        339        249        307        392        502        457   
 29     278        270        264        267        361        347        455   
 30     258        412        546        454        452        313        431   
 31     398        226        326        450        242        257        269   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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