Subject: [IGSREPORT-2434] Wk 0840 JPL Analysis Report
From: D C Jefferson
Date: Fri, 23 Feb 1996 14:31:23 PST

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IGS Electronic Report    Fri Feb 23 14:31:23 PST 1996      Message Number 2434
******************************************************************************

Author: D C Jefferson
Subject: Wk 0840 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0840 (DAYS 42-48, DATES 1996 Feb 11 - Feb 17)
******************************************************************************

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/0840.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08407.sum         This text file.
jpl08407.erp         Earth rotation parameters for GPS week 840.
jpl08407.snx         Ground station coordinates for GPS week 840, SINEX format.
jpl0840[0-6].sp3     GPS ephemerides for GPS week 840, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 17.9 cm

Beginning this week, we include data from several new stations.  As with most
stations, these sites are given the opportunity to participate in the orbit
and clock solution as the global site distribution varies.  The following
nominal coordinates were assumed:
                                       X (m)          Y (m)          Z (m)
DAM2 (Pacoima Dam #2, CA, USA):   -2507711.4100  -4638467.8100   3577591.1900  
HOPB (Northern CA, USA):          -2709010.0500  -4159607.3100   3992196.0500
REYK (Reykjavik, Iceland):         2587386.1455  -1043034.3005   5716566.7749   
TIBB (Northern CA, USA):          -2704055.4200  -4253077.6200   3895951.5000   

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: NLIB (not ALGO) used as reference clock on days 042-044.
WARNING: PIE1 (not ALGO) used as reference clock on days 045-046.
WARNING: Data from CHIL, KELY, LAMA, MATE, ONSA excluded day 042.
WARNING: Data from CHIL, HART, LAMA, MATE excluded day 043.
WARNING: Data from HART, LAMA, MALI, MATE, NYAL, WLPS excluded day 044.
WARNING: Data from HART, KELY, KOSG, LAMA, MALI, MATE, TABL, WLPS excluded day           045.
WARNING: Data from LAMA, MATE, WLPS excluded day 046.
WARNING: Data from HART, KELY, LAMA excluded day 047.
WARNING: Data from HART, HOPB, KELY, MATE, TIBB excluded day 048.

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 840 (1996 Feb 11 - Feb 17)
     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
50124.50 -22458  32672   480459  2025    4    5    11     11 37 12 24   58  323 
50125.50 -22337  32953   478453  1988    5    5    11     11 37 11 24   43  381 
50126.50 -22199  33285   476449  2020    5    5    11     11 37 11 24   38  374 
50127.50 -22089  33643   474444  1989    5    5    12     12 37 11 24   17  404 
50128.50 -21967  34043   472425  2049    4    5    12     12 37 13 24   29  392 
50129.50 -21920  34499   470389  2023    5    5    12     12 37 12 24   19  420 
50130.50 -21914  34975   468349  2057    5    5    12     12 37 12 24  -11  399 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 840:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 840 (1996 Feb 11 - Feb 17)
      96  2 11   96  2 12   96  2 13   96  2 14   96  2 15   96  2 16   96  2 17
prn   3d rss (m)
  1       0.18       0.23       0.17       0.18       0.14       0.15       0.14
  2       0.12       0.18       0.26       0.18       0.12       0.11       0.07
  4       0.10       0.17       0.10       0.14       0.14       0.10       0.07
  5       0.11       0.09       0.17       0.19       0.09       0.07       0.07
  6       0.10       0.15       0.26       0.25       0.10       0.11       0.16
  7       0.09       0.10       0.11       0.20       0.23       0.18       0.13
  9       0.13       0.11       0.21       0.16       0.09       0.20       0.20
 14       0.22       0.20       0.14       0.15       0.14       0.18       0.15
 15       0.30       0.30       0.20       0.14       0.23       0.26       0.30
 16       0.11       0.12       0.12       0.15       0.20       0.12       0.16
 17       0.12       0.18       0.12       0.08       0.10       0.12       0.13
 18       0.13       0.16       0.11       0.14       0.13       0.28       0.10
 19       0.17       0.18       0.23       0.29       0.29       0.29       0.21
 20       0.09       0.12       0.17       0.15       0.13       0.10       0.05
 21       0.13       0.21       0.19       0.18       0.13       0.13       0.14
 22       0.26       0.26       0.32       0.40       0.37       0.28       0.27
 23       0.42       0.33       0.36       0.33       0.29       0.31       0.27
 24       0.14       0.11       0.18       0.17       0.15       0.12       0.12
 25       0.22       0.15       0.17       0.12       0.22       0.23       0.15
 26       0.13       0.17       0.30       0.34       0.21       0.10       0.25
 27       0.09       0.14       0.16       0.18       0.16       0.13       0.12
 28       0.17       0.21       0.20       0.16       0.26       0.19       0.17
 29       0.09       0.21       0.20       0.15       0.25       0.16       0.19
 31       0.28       0.24       0.28       0.25       0.27       0.18       0.31
_______________________
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 840 (1996 Feb 11 - Feb 17)
 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   2.9    .218e+04    8.78        43.2        3.38        2.67    
ALGO*  6.7    .181        1.26        37.3        4.31        3.02    
AREQ   6.9    88.2        .137        43.6        4.74        2.79    
BRMU   5.0    121.       -.262e-01    38.6        5.86        2.88    
BRUS   3.9    .242        6.38        61.5        4.58        2.65    
CHAT   6.9    125.        .132        77.3        5.03        2.74    
CICE   1.0    94.8       -.817        32.0        4.00        3.28    
CRO1   6.9    139.        .140        42.9        5.76        2.38    
EISL   6.8    .733e+07   -.150e+05    41.6        6.59        2.82    
FAI2   6.9    .304       -.160        45.0        4.00        2.18    
FAIR*  6.9    .965       -9.12          .         4.31        1.93    
FORT   4.9    .189       -.363        50.9        7.85        3.17    
GOL2   6.9    .307        61.7        49.0        4.16        3.13    
GOLD*  6.5    .684        .103          .         2.66        2.29    
GUAM   6.9    109.        .131        49.8        7.06        2.36    
HART*  1.9    20.0        2.24          .         7.00        2.42    
HARV   3.0    .867e+07    .149e+05    70.5        5.00        2.91    
IISC   6.2    73.0        .176        64.8        4.64        2.25    
IRKT   2.8    11.2        .454        52.2        4.34        2.88    
KELY    .7    .612e+04    .416        47.0        5.00        1.67    
KERG   6.9    136.       -660.          .         5.30        2.60    
KIRU   3.9    3.65        12.1        52.6        8.00        1.78    
KIT3   2.6    114.        .501        54.9        4.68        3.13    
KOKB*  6.5    .296       -.462e-01    48.5        5.31        2.56    
KOSG*  2.9    30.2        4.85          .         3.37        2.42    
LPGS   5.7    .148e+05    .788        311.        4.73        3.00    
MADR*  6.8    1.17       -1.11          .         4.74        2.26    
MCM4   1.0    87.6       -.798        44.0        5.00        1.87    
MDO1   1.0    1.93       -.309        33.0        4.00        3.11    
NLIB   3.9    .647       -1.15        37.3        3.78        2.73    
NOTO   6.9    .253       -2.01        32.1        4.04        3.01    
OHIG   5.6    .275e+05   -2.78        60.8        4.45        1.19    
ONSA   2.9    .349       -2.29        39.4        3.00        2.14    
PAMA   5.9    .178e+04    .328          .         10.3        2.23    
PERT   6.9    1.90       -5.00        48.8        4.17        3.28    
PIE1   1.8    .           .           38.5        4.00        2.71    
REYK   1.0    94.6       -.845        51.0        6.00        1.83    
SANT*  6.9    .286        .849          .         4.87        2.32    
SHAO   6.9    108.        .134        86.5        4.02        2.27    
STJO   6.9    2.36        .560        42.7        4.63        2.84    
THU1   5.0    73.7        .214        48.0        4.82        2.83    
TID2   6.9    36.9        .396        42.4        4.00        3.12    
TIDB*  6.8    .281        2.14          .         4.32        2.53    
TROM*  6.9    4.94        208.          .         5.06        1.52    
TSKB   1.0    .900       -.121e+04    46.0        4.00        3.07    
USUD   5.9    4.59        1.62        37.4        3.85        3.04    
VILL   3.0    2.56        .675        66.0        4.35        2.81    
WETT*  6.9    .262        .576          .         4.63        2.23    
YAR1*  6.9    3.81        5.49          .         4.31        2.44    
YELL*  6.9    406.        .775        42.7        4.76        1.99    
ZWEN    .9    .562e+05    1.55        55.0        4.00        2.47    
PRN01  6.9    80.8        508.        51.0        5.00        2.35    
PRN02  6.9    81.5       -232.        49.9        5.02        2.71    
PRN04  6.9    81.3        11.3        45.2        5.30        2.19    
PRN05  6.9    82.5        24.8        49.1        5.03        2.62    
PRN06  6.8    81.2        6.44        52.2        5.04        2.48    
PRN07  6.7    84.5        716.        49.1        5.17        2.35    
PRN09  6.9    81.9       -11.3        50.3        4.86        2.26    
PRN14  6.9    80.6        12.8        48.9        4.87        2.46    
PRN15  6.9    3.15        272.        53.3        4.73        2.43    
PRN16  6.6    .114e+05   -150.        49.7        5.33        2.40    
PRN17  6.9    82.1       -107.        48.6        4.87        2.54    
PRN18  6.9    83.2       -6.51        51.1        5.00        2.50    
PRN19  6.9    81.6        372.        45.8        4.74        2.61    
PRN20  6.8    81.3        4.93        49.2        4.90        2.55    
PRN21  6.9    81.9       -13.7        50.6        5.00        2.38    
PRN22  6.7    82.1        285.        52.5        5.05        2.31    
PRN23  6.9    79.6        7.10        46.9        5.02        2.27    
PRN24  6.9    83.3        117.        49.9        5.45        2.21    
PRN25  6.9    78.3       -.733        49.4        4.87        2.24    
PRN26  6.9    82.2       -150.        50.7        5.32        2.41    
PRN27  6.9    83.2        19.2        46.0        4.87        2.53    
PRN28  6.7    2.56        65.9        83.2        4.31        2.66    
PRN29  6.9    81.7        6.68        47.5        4.74        2.49    
PRN31  6.7    81.3        308.        50.5        4.74        2.48    
_______________________
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
      96  2 11   96  2 12   96  2 13   96  2 14   96  2 15   96  2 16   96  2 17
prn   3d rss (m)
  1       4.0        4.1        5.8        4.1        5.1        4.7        6.3 
  2       8.7        7.1        7.8        8.5        5.2        6.1        5.4 
  4       2.3        2.4        2.8        2.0        2.9        2.3        1.9 
  5       9.3        8.3        6.4        7.2        9.7        8.5        5.1 
  6       7.4        6.2        5.6        5.7        5.8        5.8        6.3 
  7       4.4        4.3        4.9        5.7        5.5        5.9        6.6 
  9       2.8        3.2        4.8        4.4        4.4        3.2        2.9 
 14       6.4        5.8        7.1        8.8        6.9        6.4        5.7 
 15       5.5        3.4        3.1        4.0        5.7        4.7        5.2 
 16       4.7        4.8        6.5        6.7        7.6        5.9        5.8 
 17       3.8        4.3        4.5        4.3        3.9        4.3        3.9 
 18       4.4        4.9        5.8        3.8        4.5        4.1        5.8 
 19       4.2        4.7        4.3        2.9        2.7        3.1        3.6 
 20       6.4        6.7        5.6        5.3        6.3        6.3        5.7 
 21       6.5        7.2        6.4        6.7        6.9        7.6        9.9 
 22       4.0        9.6        4.0        3.5        3.7        3.2        3.5 
 23      12.8       14.2       14.6        7.3        5.4        5.4        4.7 
 24       2.9        3.1        2.7        2.5        2.9        2.9        3.0 
 25       3.4        4.7        6.6        4.0        4.4        3.9        3.3 
 26       3.4        3.0        3.2        3.2        3.4        3.2        3.3 
 27       3.9        5.1        5.0        4.2        3.2        4.4        3.9 
 28       3.5        3.7        5.3        4.2        4.2        4.2        4.3 
 29       4.0        4.3        4.4        3.9        5.0        4.4        4.6 
 31       3.0        2.9        3.2        2.9        3.3        3.1        3.2 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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