Subject: [IGSREPORT-3723] Wk 0903 JPL Analysis Report
From: D C Jefferson
Date: Thu, 8 May 1997 14:12:42 PDT

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IGS Electronic Report    Thu May  8 14:12:42 PDT 1997      Message Number 3723
******************************************************************************

Author: D C Jefferson
Subject: Wk 0903 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0903 (DAYS 117-123, DATES 1997 Apr 27 - May 03)
******************************************************************************

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/0903.  These files (except for *.tro) have also
been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl09037.sum         This text file.
jpl09037.erp         Earth rotation parameters for GPS week 903.
jpl09037.snx         Ground station coordinates for GPS week 903, SINEX format.
jpl0903[0-6].sp3     GPS ephemerides for GPS week 903, sp3 format.
jpl0903[0-6].tro     Ground station troposphere estimates for GPS week 903.
______________________________________________________________________________

Median Orbit Repeatability (see table below): 12.0 cm

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 120-123.
WARNING: Data from PRN28 excluded for the entire GPS week 903.
WARNING: Data from HOLC, WES2 excluded day 117.
WARNING: Data from EBRE, LAMA, USNA, WES2 excluded day 118.
WARNING: Data from TROM, ZWEN excluded day 119.
WARNING: Data from HOLC, PBL1 excluded day 120.
WARNING: Data from CAS1, COCO, DAV1, MAC1, NYAL, PBL1 excluded day 121.
WARNING: Data from LEEP, PBL1, VCIO excluded day 122.

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 903 (1997 Apr 27 - May 03)
     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
50565.50 -16579  42211  -351664  2160    4    5     9      9 37  9 25  134  370 
50566.50 -16468  42532  -353778  2069    4    5     9      9 37  9 25  120  338 
50567.50 -16379  42800  -355843  2060    4    4     9      9 36 10 25  123  313 
50568.50 -16290  43037  -357859  1972    3    4     9      9 37 10 25  108  281 
50569.50 -16177  43283  -359824  1959    4    4    10     10 37 10 25  145  257 
50570.50 -15986  43546  -361776  1945    4    4    10     10 37 10 25  211  270 
50571.50 -15767  43829  -363765  2032    3    4     9      9 37  9 25  227  248 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 903:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 903 (1997 Apr 27 - May 03)
      97  4 27   97  4 28   97  4 29   97  4 30   97  5  1   97  5  2   97  5  3
prn   3d rss (cm)
  1      17         23         10         15         12         12         15   
  2      18         14          9          8         10          8         15   
  3      44         36         28         20         24         27         29   
  4      13          8         13          6          5         13         12   
  5      20         19         16         21         20         26         10   
  6       7          7         10         14         24          8          9   
  7      33         15         10         12          9          7         10   
  9      15         14         20         22         26         17         18   
 10      14          7          5          7          8          5          5   
 14       9          9         14          9         15         25         13   
 15      20         20         14          5         12          7          9   
 16      19          6         12          9          8          7         15   
 17      10         11          8         20         21         10         10   
 18      14         12          7          7          7          5          8   
 19      11          7         17         14         12         10         15   
 21      22         26          8         21         21         22         16   
 22      16         31         20          8         12         10         14   
 23       7         19         25         23         13         21         15   
 24       7          7         13          6         10         12          6   
 25      16         19          9         10         13         15         26   
 26      12         15         12         11         15         14         10   
 27      18         17         11         11         10          9         12   
 29       7          7          5          8         12         13          7   
 30       8         15          9          8          9          9         10   
 31      21         15         20         23         18         17         20   
_______________________
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 903 (1997 Apr 27 - May 03)
 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    8.27       -67.2        38.5        4.00        3.12    
ALGO*  5.7    75.4        .590        46.4        4.02        2.50    
ANKR   1.0    94.9       -.289        59.0        5.00        3.00    
ASC1   6.8    91.4       -.447e-01    67.3        6.04        1.67    
AUCK   6.0    76.2       -.753e-01    40.2        4.36        2.81    
BAHR   5.8    .437        263.        50.3        4.87        3.76    
BOGT   3.5    .307e+04    .224        52.7        5.98        1.36    
BRMU   1.0    119.        .188        42.0        5.00        2.87    
BRUS   3.9    945.        6.62        58.2        4.54        2.84    
CAS1   3.9    7.88        .186e+04    42.8        6.00        1.80    
CASA   3.0    14.9        198.        40.7        4.00        2.74    
CHAT   1.0    106.        .208        79.0        5.00        2.73    
CHUR   1.0    197.        .684        35.0        5.00        1.36    
COCO   4.8    98.0       -.154e+04    37.6        6.65        2.86    
CRO1   4.0    155.       -.219        49.1        5.00        2.13    
DAV1   2.9    5.93        .282e+04    31.0        5.00        1.44    
DGAR   4.9    96.3       -.135        59.3        6.22        1.82    
FAIR*  7.0    72.9        .647        36.1        4.31        2.39    
FLIN   2.0    84.9        .207        54.5        5.00        2.31    
FORT   5.9    .674e+04   -18.6        49.6        7.18        3.04    
GOL2*  7.0    16.7       -.221e-01    46.0        4.45        3.07    
GUAM   7.0    126.       -.383e-01    68.9        7.45        2.48    
HART*  5.0    13.6        2.13        45.0        4.82        2.73    
IISC   6.9    85.9       -.451e-01    71.6        6.93        2.41    
IRKT   3.6    .203       -.193        63.8        5.06        2.81    
KELY   3.0    85.0       -.165        38.6        5.70        1.77    
KERG   3.0    185.        117.          .         5.36        2.54    
KIRU   1.0    4.28       -.151        48.0        6.00        2.25    
KIT3   3.9    149.       -.659e-01    56.2        5.00        3.04    
KOKB*  6.4    139.       -.769e-01    74.9        5.91        1.68    
KOSG*  7.0    6.25       -29.1        42.9        4.44        2.50    
KOUR   1.0    4.43        5.70          .         8.00        2.18    
KWJ1   7.0    111.       -.345e-01    64.5        7.30        1.62    
LHAS   5.9    .110e+04   -.419e-01    67.3        5.18        2.42    
MAC1   2.8    84.0       -.169        30.0        4.72        2.50    
MADR*  6.7    27.0       -.418e-01      .         6.83        2.29    
MALI   4.7    37.1       -948.          .         9.35        2.20    
MAS1   7.0    112.       -.296        41.7        4.31        2.31    
MCM4   6.9    102.       -.386e-01    35.8        4.87        1.86    
MKEA   5.0    3.60       -.228        50.5        5.81        2.67    
NRC1   3.0    .975e-01    .251        50.3        4.00        2.24    
NYAL   2.0    .165        .460e-01      .         5.00        2.24    
ONSA   1.0    .325       -.844        41.0        4.00        2.12    
PERT   7.0    2.18       -14.4        56.1        5.62        2.88    
PIE1   3.9    .           .           39.3        4.77        2.50    
RCM6   4.0    99.9        .195        66.6        5.81        2.53    
REYK   4.0    81.1        .492e-01    59.5        6.25        1.67    
SANT*  6.6    667.        .540        39.0        4.76        1.68    
STJO   4.0    117.        .515        39.3        4.83        2.44    
TAHI   4.2    171.        .604e-01    82.0        8.56        1.85    
TAIW   1.0    114.        .170          .         6.00        3.17    
THU1   3.8    75.3        .521e-01    44.5        5.00        2.54    
TIDB   6.0    .109        1.15          .         5.18        2.88    
USUD   7.0    1.11        4.18        38.2        5.21        3.12    
WTZR*  7.0    149.       -.211        59.7        4.60        2.58    
WUHN   2.9    .259e+06   -.130e+04    50.3        6.45        2.72    
XIAN   1.0    101.       -.263        42.0        5.00        2.52    
YELL*  6.9    27.9       -.193        43.1        5.02        1.61    
PRN01  7.0    81.8        18.5        50.9        5.73        2.40    
PRN02  7.0    80.5       -359.        55.3        5.45        2.25    
PRN03  7.0    79.4        8.97        52.5        5.46        2.33    
PRN04  6.6    81.3        25.1        51.6        5.59        2.42    
PRN05  7.0    81.4        94.4        54.2        5.46        2.33    
PRN06  7.0    78.8        4.51        50.3        5.88        2.64    
PRN07  7.0    80.2        744.        53.7        5.59        2.17    
PRN09  6.7    79.7       -36.4        53.6        5.46        2.14    
PRN10  7.0    80.7        7.14        52.0        5.46        2.41    
PRN14  7.0    81.9        18.4        51.4        5.32        2.17    
PRN15  6.6    3.28        420.        55.0        5.60        2.13    
PRN16  7.0    81.2        9.88        53.7        5.73        2.18    
PRN17  6.8    80.0       -147.        52.7        5.30        2.24    
PRN18  7.0    80.5        26.3        47.6        5.60        2.27    
PRN19  6.8    80.0        227.        51.6        5.45        2.19    
PRN21  7.0    80.2        50.0        55.6        5.59        2.24    
PRN22  7.0    78.9        388.        50.7        5.81        2.42    
PRN23  6.9    80.4        12.2        52.9        5.30        2.23    
PRN24  6.7    82.5        411.        51.6        5.62        2.35    
PRN25  6.8    79.4       -5.22        51.2        5.87        2.21    
PRN26  7.0    80.6       -163.        52.3        5.59        2.17    
PRN27  6.7    81.2        27.0        50.8        6.52        2.29    
PRN29  7.0    80.6        9.62        50.3        5.45        2.37    
PRN30  7.0    81.3       -52.0        51.8        5.14        2.40    
PRN31  7.0    80.2        333.        53.0        5.95        2.29    
_______________________
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  4 27   97  4 28   97  4 29   97  4 30   97  5  1   97  5  2   97  5  3
prn   3d rss (cm)
  1     313        329        300        283        291        277        256   
  2     278        544        540        169        362        176        195   
  3     519        584        355        381        328        235        437   
  4     573        392        482        562        373        677        753   
  5     343        282        269        431        346        420        337   
  6     641        624        464        528        539        492        493   
  7     467        515        518        477        390        720        410   
  9     262        356        376       1102        419       1122        225   
 10     252        224        340        322        284        606        463   
 14     479        793        497        510        354        837        536   
 15     578        321        290        408        259        336        307   
 16     350        222        179        983        456        313        468   
 17     312        333        340        302        338        444        316   
 18    1010        566        850        790       1110        395        387   
 19     344        819        253        327        466        378        440   
 21     205        186        163        163        150        204        311   
 22     432        596        414        379        376        726        340   
 23     691        367        236        320        337        167        292   
 24     318        330        737        399        513        474        405   
 25     362        425        337        503        687        370        330   
 26     234        293        285        148        170        291        239   
 27     566        534        590        527        645        287        583   
 29     249        275        264        287        282        316        489   
 30     238        268        299        542        524        166        163   
 31     281        343        325        238        322        318        235   
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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