Subject: [IGSREPORT-3619] Wk 0898 JPL Analysis Report
From: D C Jefferson
Date: Tue, 8 Apr 1997 14:11:06 PDT

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IGS Electronic Report    Tue Apr  8 14:11:06 PDT 1997      Message Number 3619
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Author: D C Jefferson
Subject: Wk 0898 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0898 (DAYS 82-88, DATES 1997 Mar 23 - Mar 29)
******************************************************************************

Submitted by the JPL IGS/FLINN Analysis Team:

J F Zumberge, D C Jefferson, M B Heflin, M M Watkins, F H Webb

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 (128.149.70.41),
directory pub/jpligsac/0898.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08987.sum         This text file.
jpl08987.erp         Earth rotation parameters for GPS week 898.
jpl08987.snx         Ground station coordinates for GPS week 898, SINEX format.
jpl0898[0-6].sp3     GPS ephemerides for GPS week 898, sp3 format.
jpl0898[0-6].tro     Ground station troposphere estimates for GPS week 898.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 12.0 cm

According to the file nanu1997.mes obtained from the IGS CBIS, PRN30 was
unusable on days 085 and 086 for maintenance/repositioning.  Data from this
satellite did not meet our initial convergence criteria on neither of these 
days and have been excluded from our analyses 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 ALGO) used as reference clock days 087 and 088.
WARNING: Data from PRN30 excluded days 085 and 086 due to a maneuver.
WARNING: Data from BRU1, FMC2, HOB2, KELY, SANT, SHK1, STL3 excluded day 082.
WARNING: Data from SANT, XIAN excluded day 083.
WARNING: Data from COCO, GOLD, KELY, KERG, NYAL excluded day 084.
WARNING: Data from HFLK, KELY, XIAN excluded day 085.
WARNING: Data from KERG, YAR1, ZWEN excluded day 087.
WARNING: Data from BAHR, HART, KERG, LHAS, MALI, NYAL excluded day 088.

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 898 (1997 Mar 23 - Mar 29)
     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
50530.50 -18953  29828  -267092  2546    3    4     8      8 37 10 25  -13  317 
50531.50 -18941  30187  -269643  2557    3    3     8      8 37 11 25  -15  378 
50532.50 -18924  30584  -272195  2547    3    3     8      8 37 12 25  -51  336 
50533.50 -18974  30994  -274750  2563    3    3     8      8 37 11 24  -37  375 
50534.50 -19016  31379  -277261  2459    3    3     9      9 37 12 24  -91  351 
50535.50 -19053  31715  -279777  2572    3    4     9      9 37 11 25    2  392 
50536.50 -19073  32152  -282366  2607    4    4     9      9 37 10 25  -40  432 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 898:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 898 (1997 Mar 23 - Mar 29)
      97  3 23   97  3 24   97  3 25   97  3 26   97  3 27   97  3 28   97  3 29
prn   3d rss (cm)
  1      11         11         10         10         10         15         13   
  2       9         17         22         16         12         11         16   
  3      34         33         38         28         31         47         52   
  4      12         11         10          9          9          8         11   
  5       9         15         10         13         10         11          9   
  6      14         14         10         10         14         17         12   
  7      10          7          9         10         10         10         14   
  9       9          9         11          9         12         14         15   
 10      16          7         15         14         10         12         13   
 14       8          6          9          9          8         10         21   
 15      17         12         14         10         11          7         16   
 16       7          7          8          4          8          7         17   
 17      20         21         14         15         18         13         10   
 18       6         10         12         12         11         12         13   
 19      10         29         32         11         20         19         18   
 21      15         14         10          8         16         11         21   
 22      17         13         18         14         12         12         16   
 23      10         20         13         32         20         15         29   
 24      19          7         13         10          9          5         10   
 25       7         14         12         13         16         18         12   
 26      10         11          9         23         21         16         16   
 27      17         19         18         19         18         22         32   
 29       9          7          5          6         11          8         21   
 30      10         15         12                                7         11   
 31      12         20         20         17         14         22         44   
_______________________
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 898 (1997 Mar 23 - Mar 29)
 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    113.        .147        51.4        4.31        2.77    
ANKR   1.0    108.       -.186        58.0        4.00        3.42    
ASC1   6.9    .889e+04   -.291        76.9        5.91        1.70    
BAHR   5.3    .580        263.        45.0        5.40        3.30    
BRAZ    .8    74.6       -.153        67.0        6.00        2.21    
BRMU   1.0    133.       -.160        38.0        5.00        3.38    
BRUS   2.0    .104e+04    6.44        61.0        4.00        2.73    
CAGL   1.0    38.9       -.193        41.0        4.00        2.65    
CAS1   4.9    12.7        916.        40.0        5.00        1.96    
CHAT   7.0    107.       -.225        78.9        5.73        2.89    
COCO   4.8    163.       -895.        40.4        7.08        2.88    
CRO1   7.0    253.       -.230        47.2        6.23        2.17    
DAV1    .9    41.4        .182e+04    34.0        5.00        1.46    
DGAR   7.0    123.       -.232        68.4        7.47        1.96    
EISL   2.5    136.       -.179        51.1        5.22        2.84    
FAIR*  7.0    .182        .475        34.0        4.45        2.27    
FLIN   4.0    88.4       -.266        48.8        4.26        2.43    
FORT   6.9    .153       -.698        49.6        5.76        3.16    
GOL2*  7.0    137.       -.160        46.6        4.32        3.07    
GUAM   7.0    117.       -.225        69.7        7.03        2.28    
HART*  6.0    13.4        7.49        46.8        5.18        2.76    
HOB2    .9    .199       -.206        44.0        6.00        2.91    
IISC   7.0    86.5       -.227        72.7        6.23        2.38    
IRKT   5.8    .174       -.502        55.1        5.00        3.00    
KERG   4.0    135.        110.          .         6.76        2.36    
KIT3   1.9    205.       -.160          .         7.73        .922    
KOKB*  6.9    278.       -.208        81.7        6.41        1.97    
KOSG*  4.7    2.65       -9.41        40.0        4.24        2.52    
KOUR   1.0    3.89        3.45          .         10.0        2.15    
KWJ1   7.0    179.       -.232        67.5        7.44        1.65    
LHAS   3.7    .142e+05   -2.68        70.1        5.30        2.45    
MAC1   4.8    80.6       -.246        30.0        4.42        2.20    
MADR*  6.7    287.        .515          .         5.17        2.47    
MALI   3.9    22.5       -396.          .         9.26        2.18    
MAS1   7.0    196.        .295e-01    41.1        4.93        2.48    
MCM4   7.0    96.7       -.226        38.8        4.87        1.80    
MDVO   2.7    .103e+06    318.        69.8        5.33        2.67    
METS   1.0    .324       -2.29        42.0        3.00        2.76    
MKEA   4.0    .164       -.240        49.1        5.51        2.32    
MOIN   2.9    90.5       -.186        63.6        6.36        1.88    
NOTO   4.0    .159        13.3        33.3        4.77        2.99    
NRC1   2.0    6.54       -.969e-01    53.0        4.00        2.37    
OHIG   2.8    .120e+05    1.62        54.0        4.68        1.78    
ONSA   1.0    .173       -2.73        39.0        4.00        2.32    
PAMA   4.3    .181e+04   -.263          .         10.3        1.37    
PERT   7.0    2.13       -10.8        53.1        5.33        3.10    
PIE1   4.0    .119       -.508e-01    39.5        4.00        2.63    
RCM6   1.0    80.4       -.186        62.0        5.00        2.87    
REYK   4.0    85.4       -.164        56.8        6.26        1.90    
SANT*  4.7    660.       -.751        39.3        5.22        1.89    
SHAO   4.0    88.5       -.213        47.7        4.28        2.75    
STJO   3.0    186.        .547        34.6        4.00        2.42    
TID2*  6.8    11.9       -.156        41.2        5.93        2.76    
USUD   3.0    1.70        1.20        37.0        4.70        2.99    
WTZR*  6.0    .142        .687        62.5        4.18        2.66    
WUHN   2.9    5.26       -143.        45.1        4.68        2.55    
YAR1*  6.0    3.19        .425          .         4.18        2.67    
YELL*  7.0    72.6        .196        43.6        4.90        1.51    
PRN01  7.0    79.3        15.9        55.4        5.59        2.24    
PRN02  7.0    81.2       -348.        55.2        5.74        2.38    
PRN03  7.0    80.6        112.        57.2        5.86        2.39    
PRN04  7.0    81.1        19.4        54.0        5.60        2.35    
PRN05  7.0    81.7        89.0        50.5        5.45        2.71    
PRN06  7.0    80.3        4.11        50.1        5.31        2.43    
PRN07  6.9    81.0        741.        51.5        5.45        2.18    
PRN09  7.0    83.3       -32.6        57.7        5.74        2.17    
PRN10  7.0    81.0        5.54        51.5        5.47        2.18    
PRN14  7.0    80.5        17.6        51.7        5.49        2.25    
PRN15  7.0    2.95        407.        58.8        5.87        2.19    
PRN16  7.0    80.6        5.31        51.5        5.15        2.37    
PRN17  6.9    81.2       -144.        55.7        5.45        2.12    
PRN18  7.0    81.2        24.3        49.3        5.73        2.44    
PRN19  7.0    80.6        246.        55.5        5.61        2.27    
PRN21  7.0    81.0        41.6        57.2        5.59        2.34    
PRN22  7.0    83.0        379.        52.8        5.87        2.39    
PRN23  7.0    81.3        10.8        54.2        5.61        2.23    
PRN24  7.0    81.0        259.        57.2        5.74        2.32    
PRN25  7.0    79.8       -5.39        52.6        5.59        2.14    
PRN26  6.9    83.0       -143.        54.3        5.59        2.23    
PRN27  7.0    81.7        22.8        54.5        5.60        2.20    
PRN29  7.0    81.2        7.97        51.6        5.31        2.38    
PRN30  5.0    80.8       -44.3        52.1        5.00        2.59    
PRN31  6.9    81.5        276.        53.1        5.73        2.34    
_______________________
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
      97  3 23   97  3 24   97  3 25   97  3 26   97  3 27   97  3 28   97  3 29
prn   3d rss (cm)
  1     258        322        536        389        827        551        510   
  2     250        278        500        662        221        155        196   
  3     285        292        188        233        748        636        404   
  4     340        442        311        150        250        703        532   
  5     202        234        241        205        195        205        396   
  6     540        474        565        608        656        616        614   
  7     287        226        398        298        330        334        361   
  9     213        389        362        202        185        213        372   
 10     431        807        667        235        251        353        240   
 14     315        225        472        438        688        591        334   
 15     296        263        228        260        348        171        233   
 16     390        490        428        284        338        871        516   
 17     496        227        252        370        281        274        163   
 18     773        751        383        396        619       2020        659   
 19     775        206        323        190        296        916        228   
 21     349        199        289        232        217        287        151   
 22     539        488        447        300        321        344        574   
 23     411        220        317        485        491        338        396   
 24     254        243        680        509        192        172        263   
 25     253        358        777        510        258        280        245   
 26     410        274        147        238        379        391        302   
 27     244        290        455        276        312        473        743   
 29     468        528        742        601        298        412        649   
 30     167        246        451                              563        391   
 31     157        197        292        310        351        306        217   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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