Subject: [IGSREPORT-2678] Wk 0853 JPL Analysis Report
From: D C Jefferson
Date: Tue, 28 May 1996 15:27:46 PDT

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IGS Electronic Report    Tue May 28 15:27:46 PDT 1996      Message Number 2678
******************************************************************************

Author: D C Jefferson
Subject: Wk 0853 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0853 (DAYS 133-139, DATES 1996 May 12 - May 18)
******************************************************************************

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/0853.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename             contents
______________________________________________________________________________
jpl08537.sum         This text file.
jpl08537.erp         Earth rotation parameters for GPS week 853.
jpl08537.snx         Ground station coordinates for GPS week 853, SINEX format.
jpl0853[0-6].sp3     GPS ephemerides for GPS week 853, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 16.7 cm

According to the file nanu1996.mes obtained from the IGS CBIS, PRN20 is
unusable for an indefinite period beginning day 131.  Although data from 
this satellite were used on day 138 only, its formal errors exceeded our
criteria, and its solution was excluded from the sp3 orbit file for that day 
(jpl08535.sp3).

Beginning this week, we include data from CSN1 (California State University
at Northridge CA, USA).  As with most stations, this site is 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)
          CSN1:   -2520183.5413  -4637076.6354  3569868.6088

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 on day 134.
WARNING: NLIB (not ALGO) used as reference clock on day 135.
WARNING: ONSA (not ALGO) used as reference clock on days 136 and 137.
WARNING: Data from ASC1, CHIL, DGAR, MATE, PERT, STJO, WETT excluded day 133.
WARNING: Data from CHAB, DGAR, GUAM, JOZE, MATE, NYAL, PERT, SANT, STJO, WINT            excluded day 134.
WARNING: Data from GUAM, KELY, LEEP, MATE, PERT, SOL1, STJO excluded day 135.
WARNING: Data from AOA1, CHIL, COSO, GUAM, KELY, MATH, NUNE, NYAL, OHIG, POTS,           SANT, TIBB excluded day 136.
WARNING: Data from CHIL, CMBB, COSO, DGAR, KELY, MATE, PAMA, POTS, SANT, SOL1,           TRAK excluded day 137.
WARNING: Data from MATE, POTS, TIBB excluded day 138.
WARNING: Data from BOR1, CMBB, FARB, POTS, SANT, TIBB excluded day 139.

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 853 (1996 May 12 - May 18)
     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
50215.50  -1430  58828   276270  2219    3    4     9      9 37 12 24  438   89 
50216.50   -980  58945   274058  2205    3    4     9      9 37 12 24  399   49 
50217.50   -565  59037   271803  2306    3    4     9      9 37 12 24  430   53 
50218.50   -206  59128   269519  2261    4    4     9      9 37 10 24  409   65 
50219.50     79  59188   267265  2247    4    4    10     10 37 11 24  378   45 
50220.50    399  59216   265098  2088    3    3    10     10 37 13 25  348   16 
50221.50    751  59269   262979  2149    3    4     9      9 37 10 24  392   -5 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 853:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 853 (1996 May 12 - May 18)
      96  5 12   96  5 13   96  5 14   96  5 15   96  5 16   96  5 17   96  5 18
prn   3d rss (m)
  1       0.10       0.16       0.15       0.13       0.23       0.16       0.22
  2       0.16       0.21       0.17       0.21       0.19       0.31       0.22
  3       0.26       0.34       0.36       0.33       0.39       0.32       0.47
  4       0.15       0.07       0.08       0.08       0.11       0.13       0.10
  5       0.18       0.21       0.14       0.25       0.10       0.14       0.29
  6       0.15       0.12       0.14       0.11       0.09       0.14       0.28
  7       0.13       0.08       0.14       0.14       0.18       0.24       0.14
  9       0.11       0.08       0.14       0.09       0.12       0.20       0.15
 14       0.14       0.12       0.15       0.17       0.17       0.13       0.25
 15       0.16       0.14       0.14       0.19       0.17       0.25       0.12
 16       0.08       0.16       0.08       0.08       0.12       0.08       0.16
 17       0.16       0.11       0.16       0.13       0.14       0.20       0.25
 18       0.22       0.18       0.10       0.11       0.12       0.12       0.11
 19       0.79       0.46       0.20       0.25       0.50       0.57       0.27
 21       0.14       0.12       0.19       0.18       0.15       0.17       0.25
 22       0.13       0.13       0.12       0.20       0.11       0.12       0.14
 23       0.16       0.10       0.18       0.11       0.10       0.15       0.15
 24       0.12       0.10       0.11       0.10       0.12       0.06       0.11
 25       0.11       0.11       0.21       0.20       0.12       0.06       0.10
 26       0.16       0.12       0.15       0.14       0.13       0.12       0.10
 27       0.14       0.11       0.09       0.17       0.07       0.12       0.18
 28       0.31       0.21       0.18       0.14       0.17       0.17       0.12
 29       0.17       0.19       0.11       0.12       0.14       0.14       0.07
 31       0.13       0.13       0.19       0.11       0.12       0.17       0.14
_______________________
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 853 (1996 May 12 - May 18)
 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*  6.8    21.5        .533        45.8        4.34        2.88    
ANKR   3.9    120.        .350        63.5        5.27        2.73    
AREQ   7.0    91.8        .478        39.0        5.19        2.20    
ASC1   3.0    .800e+04    .469        98.2        5.76        1.80    
BOGT   4.9    110.        .653        62.3        6.61        2.27    
BRMU   4.0    116.        .123        38.8        5.76        2.78    
BRUS   1.0    .179        .807        61.0        5.00        2.70    
CAS1   5.0    9.34        504.        36.2        5.62        1.98    
CASA   4.0    15.9        77.1        41.5        5.05        2.63    
CHAT   7.0    102.        .485        78.9        5.45        2.47    
CRO1   5.0    220.        .311        48.4        4.67        2.24    
DAV1   1.0    13.4        762.        32.0        5.00        1.23    
EISL   5.8    .645e+07   -.148e+05    38.2        7.49        3.00    
FAIR*  7.0    105.       -.975        41.0        4.30        1.97    
FORT   7.0    .125        11.2        53.0        8.09        3.67    
GODE   2.0    .178       -.304        46.5        4.00        2.58    
GOL2*  7.0    20.5        .741        47.1        5.18        2.86    
GUAM   2.0    138.        .705          .         9.00        1.84    
HART*  4.9    37.3        17.4        43.6        4.81        2.56    
HBRK   2.0    .288e+06    501.        44.0        5.52        1.21    
HKLO   3.0    .288e+06    509.        47.8        4.00        .913    
HOB2   2.0    .328        1.50        49.0        5.10        2.95    
IISC   6.9    96.6        .460        67.4        5.16        2.32    
IRKT   3.8    .321        .358        59.2        4.78        2.91    
KERG   3.9    158.       -643.          .         5.51        2.56    
KIRU   1.0    5.91        1.31        61.0        8.00        1.92    
KIT3   3.9    154.        .491        59.7        4.28        2.92    
KOKB*  7.0    .985e+05   -322.        69.3        5.00        2.31    
KOSG*  6.0    4.25        2.96        40.3        3.58        2.45    
KWJ1   3.8    81.8        .461        56.8        8.07        1.68    
LPGS   7.0    704.        .481        52.1        5.59        2.53    
MAC1   3.9    77.1        .444        30.7        4.28        1.92    
MADR*  6.6    .167        22.3          .         5.47        2.63    
MALI   5.9    225.        121.          .         9.05        2.57    
MAS1   3.9    29.1       -6.26        50.5        4.79        2.91    
MCM4   6.0    86.6        .315        34.5        4.89        1.88    
MDVO   2.9    .303        827.        70.7        6.35        2.64    
NLIB    .9    .           .           42.0        4.00        2.79    
NOTO   6.9    .137       -15.4        37.8        4.79        2.97    
OHIG   1.8    97.3        .933        55.5        5.00        2.06    
ONSA   2.9    .909e-01   -1.26        38.0        4.00        2.08    
PAMA   5.1    994.        .359          .         10.2        1.48    
PERT   4.0    2.08        37.8        50.5        4.87        3.03    
PIE1    .9    .           .           41.0        4.00        3.17    
POL2   1.9    83.5        .657        69.9        4.00        2.53    
RCM5   1.0    95.2        .443e-01    93.0        7.00        1.88    
REYK   7.0    79.2        .483        58.6        6.15        2.15    
SANT*  1.0    .128        .450e-01      .         5.00        2.34    
SHAO   2.0    380.       -.936e-01    121.        4.53        1.18    
STJO   4.0    3.08        3.53        37.8        5.31        2.82    
TAIW   1.0    110.        1.36          .         4.00        3.33    
THU1   5.6    272.        .552        49.7        5.55        2.09    
TID2*  7.0    .130       -.349e-01    46.9        5.45        2.58    
TROM*  7.0    .781e+04    31.3          .         4.47        1.75    
TSKB   2.0    .575        3.02        50.0        4.53        2.72    
USUD   5.0    2.98        3.26        36.4        4.43        2.48    
WTZR*  4.9    .201        .861        63.0        4.87        2.59    
YAR1*  7.0    6.69        3.03          .         4.63        2.45    
YELL*  7.0    51.5        .195        54.5        5.63        1.87    
PRN01  7.0    81.1        88.6        52.2        5.59        2.22    
PRN02  7.0    81.0       -255.        52.9        5.44        2.57    
PRN03  7.0    80.5        12.8        52.8        5.47        2.35    
PRN04  6.6    83.2        26.2        50.9        5.74        2.14    
PRN05  7.0    82.2        40.3        52.3        5.31        2.02    
PRN06  7.0    80.5        .808        51.2        5.87        2.41    
PRN07  7.0    82.1        721.        54.3        5.16        2.04    
PRN09  6.9    79.7       -21.2        54.3        5.30        2.22    
PRN14  7.0    84.8        14.2        52.3        5.73        2.12    
PRN15  6.7    3.80        302.        58.9        5.00        2.22    
PRN16  7.0    82.5        11.6        51.0        5.87        2.52    
PRN17  6.8    83.7       -114.        53.2        5.73        2.32    
PRN18  7.0    82.8        1.58        51.7        5.88        2.41    
PRN19  6.9    80.9        472.        51.7        6.31        2.40    
PRN21  6.9    79.9       -21.1        53.5        5.60        2.49    
PRN22  7.0    79.5        308.        52.8        5.60        2.27    
PRN23  7.0    81.6        11.0        50.4        5.46        2.25    
PRN24  6.7    79.5       -145.        52.6        5.60        2.38    
PRN25  6.9    80.6       -1.33        52.0        5.45        2.22    
PRN26  7.0    83.4       -195.        52.3        5.73        2.35    
PRN27  6.9    81.9        29.2        49.6        5.73        2.49    
PRN28  7.0    2.02        83.2        68.4        4.74        2.54    
PRN29  6.9    81.0        10.4        49.1        5.60        2.26    
PRN31  7.0    80.5        493.        54.6        5.30        2.38    
_______________________
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  5 12   96  5 13   96  5 14   96  5 15   96  5 16   96  5 17   96  5 18
prn   3d rss (m)
  1       5.6        5.1        5.1        4.8        5.5        4.2        4.4 
  2       4.2        3.6        3.7        5.6        5.9        7.2        5.7 
  3       5.6        5.4        3.9        3.7        4.8        4.9        4.2 
  4       6.6        5.0        5.8        7.2        6.5        7.3        7.4 
  5       3.8        3.4        4.0        4.1        4.3        4.2        4.2 
  6       5.9        4.8        5.9        6.1        5.1        5.2        5.5 
  7       3.6        3.9        4.5        4.4        4.8        5.0        5.0 
  9       8.7        7.7       11.7       10.6        6.4        9.3        8.2 
 14       3.4        4.6        3.4        3.7        3.9        5.4       18.3 
 15       5.3        4.8        5.6        7.4        7.4        7.4        6.0 
 16       5.8       24.3       12.5        7.5        3.5        2.4        5.5 
 17       5.2        4.0        6.6       11.6        7.9        6.2        6.0 
 18       4.2        5.1        6.2        4.9        3.9        4.9        2.6 
 19      13.3       56.1       52.2       35.5        9.0       13.4       13.1 
 21       5.1        4.9        4.4        4.3        4.9        5.3        4.5 
 22       7.0        6.6        5.5        5.6        6.1        6.0        6.0 
 23       3.5        2.6        2.2        2.5        3.4        2.6        2.8 
 24       7.5        6.6        8.6        9.1        7.1        9.1        8.8 
 25       8.1       10.7        8.0        6.9        6.5        6.5        6.6 
 26       3.8        2.9        3.9        3.0        3.3        3.4        3.1 
 27      11.6       12.0       10.0        9.5        7.6        7.2        8.8 
 28       3.1        3.9        5.7        4.9        4.2        3.0        3.7 
 29       3.8        4.1        4.1        4.4        3.2        3.4        4.4 
 31       2.7        3.0        2.4        3.0        2.5        2.3        2.7 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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