Subject: [IGSREPORT-3501] Wk 0893 JPL Analysis Report
From: D C Jefferson
Date: Fri, 28 Feb 1997 17:04:24 PST

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IGS Electronic Report    Fri Feb 28 17:04:24 PST 1997      Message Number 3501
******************************************************************************

Author: D C Jefferson
Subject: Wk 0893 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0893 (DAYS 47-53, DATES 1997 Feb 16 - Feb 22)
******************************************************************************

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/0893.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08937.sum         This text file.
jpl08937.erp         Earth rotation parameters for GPS week 893.
jpl08937.snx         Ground station coordinates for GPS week 893, SINEX format.
jpl0893[0-6].sp3     GPS ephemerides for GPS week 893, sp3 format.
jpl0893[0-6].tro     Ground station troposphere estimates for GPS week 893.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 12.0 cm

Data from PRN10 appears to be mismodeled on one or both of days 050 and 051.
Although used in the analyses of both days, we have chosen to remove this
satellite's solution from the corresponding orbit products (jpl0893[34].sp3).

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 047 and 048.
WARNING: NLIB (not ALGO) used as reference clock days 049 and 052.
WARNING: FAIR (not ALGO) used as reference clock days 050 and 051.
WARNING: Data from SANT excluded day 047.
WARNING: Data from BOGT, LPGS excluded day 048.
WARNING: Data from LPGS excluded day 049.
WARNING: Data from LPGS excluded day 050.
WARNING: Data from LPGS excluded day 051.
WARNING: Data from CAS1, COCO, DAV1, HOB2, MAC1 excluded day 052.
WARNING: Data from MAC1, NLIB, SNI1, SPK1 excluded day 053.

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 893 (1997 Feb 16 - Feb 22)
     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
50495.50 -14586  18534  -189506  1849    3    3     8      8 37 10 25 -258  262 
50496.50 -14859  18778  -191334  1807    3    3     7      7 37 12 25 -280  250 
50497.50 -15133  19017  -193162  1848    3    3     9      9 37 12 25 -272  219 
50498.50 -15372  19240  -195005  1838    2    3     7      7 37 12 25 -253  228 
50499.50 -15605  19456  -196886  1925    2    3     7      7 37 12 25 -232  188 
50500.50 -15791  19689  -198775  1852    3    3     9      9 37 12 25 -198  220 
50501.50 -15976  19982  -200660  1918    3    3     8      8 36 11 25 -205  282 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 893:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 893 (1997 Feb 16 - Feb 22)
      97  2 16   97  2 17   97  2 18   97  2 19   97  2 20   97  2 21   97  2 22
prn   3d rss (cm)
  1       7          9         14         11         16         15         12   
  2       9         14         16          7          9          8          7   
  3      24         22         16         25         21         34         20   
  4      13         14         11         19         19         24         13   
  5       5          8          6          8          7         15          8   
  6       9         19         18         22         10         10         14   
  7      13         18         14         12         11         11         12   
  9       9          7          5         10          9          9         11   
 10      12          7         16         71         50         12         11   
 14      15         14         31         29         19         19          9   
 15      11         11         10         11         10         10         13   
 16       9         13         15         17         21         13          9   
 17      10         16         15          8         27         29         20   
 18      36         12         24         41         29         11         16   
 19      10         20         28         21          8          8         21   
 21      10          9         10          6         15         12          7   
 22      12         14         13          8         13         19         48   
 23       7         16         16         16         20         19         22   
 24      10          9         16         21         12         12         18   
 25      12          8         11         10         14         40         16   
 26      15         14         23         18         20         15         10   
 27       8         10         12         11          9          8          8   
 29      13         12         15         10          9          9         13   
 30       6          8         10          7         10         15         12   
 31      12         13         11         13         12         11         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 893 (1997 Feb 16 - Feb 22)
 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)
 |     |      |           |           |           |           |
 |___  |__    |_______    |_______    |___        |___        |__
ALBH   2.0    12.1       -57.9        39.2        3.54        3.27    
ALGO*  7.0    .175       -.101        44.5        4.52        3.42    
AREQ   2.0    77.2       -.269        19.0        4.53        3.18    
ASC1   7.0    104.       -.335        77.0        6.48        2.74    
BAHR   5.9    .485        264.        38.8        4.54        3.65    
BOGT   5.9    91.2       -.358        47.2        6.51        3.08    
BRAZ   1.7    84.9       -.368        41.5        8.00        2.95    
BRUS   4.0    .209        .594e-01    46.0        3.78        3.27    
CAS1    .9    14.1        93.9        24.0        4.00        1.67    
CHAT   7.0    78.1       -.334        70.2        5.00        3.02    
COCO   5.9    .140e+06   -574.        44.6        8.75        2.86    
CRO1   2.0    95.2       -.284        24.5        7.00        2.70    
DAV1   4.9    38.6        724.        21.4        4.00        1.86    
DGAR   6.0    80.4       -.394        32.9        7.20        3.33    
FAIR*  7.0    .183        .629        23.5        4.00        2.35    
FLIN   1.0    81.7       -.398        33.0        3.00        3.12    
FORT   4.9    .387e+05   -217.        32.0        7.64        3.21    
GOL2*  7.0    .146       -.387        32.5        3.91        3.23    
GUAM   7.0    90.5       -.339        36.5        8.79        3.06    
HART*  4.8    835.       -4.53        27.4        6.06        3.27    
HOB2   1.9    .417        .852        35.0        5.13        3.31    
IISC   6.4    76.5       -.347        54.0        5.39        3.13    
IRKT   3.9    .168        .320        41.6        4.00        3.18    
KELY   1.7    .954e+04    2.57        24.2        5.00        1.64    
KERG   1.9    99.0        4.33          .         5.49        3.29    
KIRU   1.0    2.90        2.33        36.0        7.00        2.15    
KIT3   1.9    96.7       -.811        36.6        4.00        3.51    
KOKB*  6.4    95.3       -.256        36.7        5.64        1.98    
KOSG*  7.0    732.       -5.68        29.0        3.50        2.52    
KOUR   3.0    3.28        22.9          .         7.06        2.84    
KWJ1   7.0    96.1       -.334        39.4        6.32        3.16    
LHAS   4.6    107.       -.393        40.4        5.22        2.66    
MAC1   2.9    79.3       -.580        17.4        3.70        2.59    
MADR*  6.9    52.4       -.998e-02      .         6.13        2.43    
MALI   3.9    21.8       -23.7          .         6.00        3.81    
MAS1   7.0    131.       -.375        15.3        3.87        2.66    
MCM4   6.9    92.8       -.332        22.4        3.76        1.52    
MKEA   4.0    .101       -.455        25.0        6.26        2.74    
NLIB   4.0    130.       -.986        36.0        4.00        2.96    
NOTO   1.0    .143       -1.35        31.0        5.00        3.72    
NYAL    .9    .845e-01   -1.04          .         4.00        2.03    
OHIG   4.9    .199e+05   -1.97        51.1        4.36        1.19    
PAMA   3.8    180.       -.407          .         11.3        2.58    
PERT   7.0    2.22       -6.78        36.9        5.55        3.62    
PIE1   2.0    .           .           26.5        4.00        3.29    
RCM6   4.0    70.8       -.357        50.3        6.35        3.23    
REYK   1.0    70.3       -.850        47.0        6.00        2.44    
SANT*  5.6    .579e+04   -2.01        34.7        5.68        1.53    
SHAO   1.0    79.2        .266e-01    28.0        4.00        3.61    
STJO   2.0    3.07        .713        21.0        4.00        3.02    
TAEJ   2.0    3.18        811.        34.0        5.00        3.82    
TAIW    .9    76.4       -.303e-01      .         3.00        3.30    
THU1   3.9    63.3       -.244        33.3        4.51        2.88    
TID2*  6.9    22.6       -.377        27.4        5.59        3.17    
USUD   4.0    2.57        .498        22.9        4.27        3.52    
WEST   1.0    .555       -3.42        47.0        3.00        3.03    
WTZR*  6.9    1.70       -.194        46.2        4.16        2.97    
WUHN   1.9    4.60       -42.5        32.0        4.00        3.29    
XIAN   1.0    96.5       -.400        39.0        4.00        3.43    
YAR1*  7.0    4.66       -.244          .         4.46        3.30    
YELL*  7.0    .726       -.201        56.4        3.75        1.62    
PRN01  6.8    81.3        13.2        41.3        5.63        2.44    
PRN02  7.0    80.0       -338.        39.6        5.16        3.09    
PRN03  6.6    80.0        101.        44.1        5.46        2.61    
PRN04  7.0    79.8        13.5        36.0        5.00        2.54    
PRN05  7.0    80.6        83.1        38.4        5.45        3.08    
PRN06  6.8    77.8        3.97        37.3        5.64        2.68    
PRN07  6.8    82.8        738.        40.9        5.62        2.78    
PRN09  7.0    81.6       -28.8        41.7        5.59        2.90    
PRN10  7.0    82.9        3.92        37.5        5.60        2.60    
PRN14  7.0    82.7        16.9        39.1        5.30        2.56    
PRN15  7.0    3.43        394.        43.4        5.30        2.74    
PRN16  7.0    82.9        .681        39.8        5.16        2.60    
PRN17  7.0    80.1       -141.        38.5        5.31        2.79    
PRN18  6.7    80.5        22.6        41.4        5.89        2.36    
PRN19  7.0    79.4        251.        40.7        5.45        2.49    
PRN21  7.0    81.1        33.0        42.3        5.72        2.75    
PRN22  7.0    82.3        371.        38.5        5.74        2.60    
PRN23  7.0    81.3        9.41        40.3        6.05        2.50    
PRN24  7.0    82.4        237.        37.0        5.60        2.51    
PRN25  7.0    82.2       -5.29        37.9        5.31        2.51    
PRN26  6.8    80.6       -123.        42.2        6.03        2.72    
PRN27  7.0    82.4        18.8        39.6        5.60        2.56    
PRN29  6.7    80.1        6.47        39.0        5.33        2.75    
PRN30  7.0    82.3       -36.9        41.0        5.31        2.74    
PRN31  6.6    80.9        223.        41.2        5.46        2.56    
_______________________
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  2 16   97  2 17   97  2 18   97  2 19   97  2 20   97  2 21   97  2 22
prn   3d rss (cm)
  1     684        698        651        783        692        728        720   
  2     381        437        341        364        394        425        419   
  3     738        368        438        555        520        306        312   
  4     360        309        234        225        412        390        219   
  5     332        420        334        338        475        346        391   
  6     749        729        834        790        759        868        871   
  7     922        928        891        879        916        935        952   
  9     411        266        283        266        236        233        223   
 10     484        469        619        463        394        704        911   
 14     811        520        454       1116        607        540        826   
 15     301        256        228        215        362        355        800   
 16     478        552        603        324        955        957        349   
 17     551        667        705        771        625        743        853   
 18    1833        445        434        677       3298        397        302   
 19     494        179        278        252        254        339        250   
 21     338        508        867        248        303        572        319   
 22     378        441        392        605        342        408        375   
 23     731        810        733        841       1513        792        520   
 24     562        586        538        537        648        722        663   
 25     458        509        496        500        418        456        543   
 26     237        255        602        582        432        492        268   
 27     848        349        369        434        416        555        233   
 29     875        309        286        347        394        470        470   
 30     387        669        394        259        484        243        254   
 31     501        575        466        481        408        487        415   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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