Subject: [IGSREPORT-2035] Wk 0818 JPL Analysis Report
From: D C Jefferson
Date: Mon, 25 Sep 1995 15:14:36 PDT

******************************************************************************
IGS Electronic Report    Mon Sep 25 15:14:36 PDT 1995      Message Number 2035
******************************************************************************

Author: D C Jefferson
Subject: Wk 0818 JPL Analysis Report

******************************************************************************
JPL ANALYSIS REPORT   GPS-WEEK 0818 (DAYS 253-259, DATES 1995 Sep 10 - Sep 16)
******************************************************************************

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/0818.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename               contents
______________________________________________________________________________
jpl08187.sum           This text file.
jpl08187.erp           Earth rotation parameters for GPS week 818.
jpl0818[0-6].sp3       GPS ephemerides for GPS week 818, sp3 format.
______________________________________________________________________________

Mean Orbit Repeatability (see table below): 26.6 cm

According to the file nanu1995.mes obtained from the IGS CBIS, PRN27 was
unusable on days 255 and 256 for maintenance/repositioning.  Data from this
satellite did not meet our initial convergence criteria on these days, and
have been excluded from our analyses accordingly.  

Also, PRN16 was poorly modeled on day 255.  Although used in our processing
this day, we have elected to remove this satellite from the corresponding orbit
product (jpl08182.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: Data from AOA1, CMP9, HBRK, KOKB, VCIO, WSMN excluded on day 253.
WARNING: Data from DAV1, HART, JPLM, KOKB, MAS1, NALL, TRAK excluded on day 254.
WARNING: Data from AOA1, DAV1, HART, MAS1, TRAK, WHI1 excluded on day 255.
WARNING: Data from PRN27 excluded on days 255 and 256.
WARNING: Data from AOA1, CHIL, CRFP, DAV1, FAIR, HART, KIRU, TRAK excluded on
         day 256.
WARNING: Data from CHIL, DAV1, HART, KIRU, ONSA, YELL excluded on day 257.
WARNING: Data from AOA1, FARB, HART, KIRU, MATH, PERT, YELL, ZWEN excluded on
         day 258.
WARNING: Data from AOA1, FARB, HART, KERG, NALL, PERT, YELL, ZWEN excluded on
         day 259.

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 818 (1995 Sep 10 - Sep 16)
     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
49970.50  19834  14105  -172649  2032    5    6    13     13 34 12 25 -332 -264 
49971.50  19517  13843  -174671  2013    5    5    13     13 34 11 25 -332 -248 
49972.50  19185  13543  -176710  2064    5    5    13     13 34 12 24 -351 -291 
49973.50  18900  13280  -178806  2129    5    5    13     13 34 11 24 -272 -234 
49974.50  18644  13029  -180929  2117    5    5    13     13 34 11 25 -316 -211 
49975.50  18390  12883  -183076  2176    5    5    13     13 34 11 25 -289 -188 
49976.50  18120  12710  -185274  2221    5    6    14     14 34 11 25 -299 -207 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 818:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 818 (1995 Sep 10 - Sep 16)
      95  9 10   95  9 11   95  9 12   95  9 13   95  9 14   95  9 15   95  9 16
prn   3d rss (m)
  1       0.13       0.15       0.13       0.10       0.22       0.26       0.18
  2       0.22       0.15       0.21       0.17       0.23       0.23       0.19
  4       0.13       0.32       0.29       0.17       0.16       0.20       0.27
  5       0.11       0.11       0.12       0.23       0.15       0.13       0.21
  6       0.21       0.25       0.17       0.22       0.18       0.14       0.15
  7       0.21       0.19       0.23       0.22       0.17       0.17       0.16
  9       0.22       0.29       0.27       0.19       0.26       0.40       0.33
 12       0.37       0.33       0.36       0.25       0.36       0.43       0.41
 14       0.11       0.12       0.50       0.34       0.16       0.09       0.11
 15       0.11       0.14       0.08       0.14       0.26       0.10       0.13
 16       0.18       0.15       9.94       1.27       0.29       0.35       0.44
 17       0.23       0.24       0.16       0.25       0.23       0.36       0.29
 18       0.10       0.10       0.14       0.16       0.10       0.18       0.17
 19       0.28       0.37       0.39       0.23       0.23       0.23       0.11
 20       0.18       0.18       0.20       0.17       0.19       0.17       0.18
 21       0.13       0.19       0.17       0.15       0.11       0.20       0.16
 22       0.21       0.20       0.21       0.13       0.21       0.24       0.14
 23       0.30       0.20       0.24       0.21       0.28       0.20       0.29
 24       0.30       0.27       0.19       0.20       0.19       0.20       0.18
 25       0.18       0.12       0.10       0.15       0.15       0.12       0.12
 26       0.26       0.39       0.35       0.28       0.16       0.23       0.28
 27       0.13       0.1                              0.1        0.09       0.11
 28       0.34       0.26       0.16       0.12       0.14       0.18       0.18
 29       0.11       0.10       0.17       0.23       0.21       0.22       0.21
 31       0.11       0.10       0.11       0.13       0.13       0.21       0.27
_______________________
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 818 (1995 Sep 10 - Sep 16)
 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    .           .           47.8        4.16        2.70    
AREQ   6.9    83.8        1.72        44.2        4.73        2.45    
BOGT   6.4    557.        1.81          .         6.17        2.07    
BOR1   3.8    3.52        .826        34.5        4.00        2.81    
BRAZ   2.9    80.8        1.73        73.3        5.68        2.42    
BRMU   1.0    94.8        1.74        39.0        8.00        3.22    
CAS1   5.8    17.7        768.        41.0        4.84        1.94    
CICE   3.9    .662e+06    781.        27.4        3.37        2.88    
EISL   6.8    .650e+07   -.148e+05    41.3        6.31        2.86    
FAI2   3.0    .275        1.43        47.3        4.74        1.95    
FAIR*  5.9    1.66        1.50          .         5.20        1.75    
FORT   5.0    .424e+05   -836.        50.0        5.84        2.89    
GOLD*  6.8    22.6        2.40          .         3.75        2.33    
GRAS   1.0    84.6        1.72        32.0        4.00        2.74    
GUAM   6.9    92.2        1.72        49.4        7.58        2.31    
HART*   .9    9.05        1.54          .         8.00        1.56    
HARV   3.0    .849e+07    .143e+05    71.7        5.36        2.66    
HKLO   2.9    .289e+06    505.        44.7        4.36        .703    
KERG   5.9    162.       -86.8          .         5.17        2.52    
KIRU   2.0    2.79        1.14        54.5        6.51        1.86    
KIT3   5.7    .213e+04    1.67        63.3        4.85        2.79    
KOK2   4.7    .173        2.87        46.6        5.19        2.37    
KOKB*  5.0    .103        2.15          .         5.42        2.55    
KOSG*  6.9    1.49        2.61          .         4.00        2.34    
KOUR   6.9    3.97        23.2          .         7.89        1.98    
LHAS   4.7    152.        1.73        70.6        5.07        1.86    
MAC1   5.8    41.3        1.70        39.8        4.51        2.16    
MADR*  6.6    234.        2.85          .         4.86        2.44    
MAS1   3.9    .143e+04    5.36        47.5        4.13        2.41    
MCM4   6.9    76.9        1.72          .         5.00        1.80    
METS   1.0    .343       -5.36        47.0        3.00        2.28    
PAMA   6.0    16.6        3.00          .         12.3        1.13    
PERT   4.9    2.28        93.6        52.6        4.82        3.40    
RCM5   6.9    6.98        1.93          .         7.37        2.83    
SANT*  6.9    .103        9.96          .         5.15        2.49    
SHAO   5.9    78.2        1.71        42.5        5.08        2.59    
STJO   6.9    .103e+06    323.        53.0        4.60        2.62    
THU1   6.8    70.2        1.72        51.9        5.00        2.73    
TID2   5.9    12.7        1.72        44.3        4.18        2.99    
TIDB*  6.9    .113        1.95          .         4.30        2.45    
TROM*  6.7    5.53        285.          .         5.07        1.40    
USUD   2.0    .923       -.139        36.0        5.00        2.84    
VILL   2.0    3.59        1.33        82.8        4.60        3.06    
WETT*  6.9    .978        .120          .         6.30        2.33    
YAR1*  6.8    .125e+06   -3.00          .         4.16        2.52    
YELL*  3.5    .249       -7.55        47.2        4.48        1.40    
PRN01  6.6    81.9        529.        48.6        5.58        2.22    
PRN02  6.9    82.6       -191.        45.6        5.45        2.26    
PRN04  6.8    81.3        45.1        49.0        6.00        1.98    
PRN05  6.8    82.3        127.        49.1        5.31        2.07    
PRN06  6.5    81.8        1.64        51.9        6.16        2.17    
PRN07  6.4    81.1        710.        48.4        5.73        2.15    
PRN09  6.8    82.9       -7.25        48.9        5.31        2.11    
PRN12  6.6    .961        386.        66.8        4.45        2.35    
PRN14  6.9    82.2        12.7        48.1        5.46        2.16    
PRN15  6.9    3.16        225.        48.8        5.16        2.01    
PRN16  6.5    82.7       -117.        55.6        6.17        2.07    
PRN17  6.8    81.7       -90.7        51.1        5.15        2.36    
PRN18  6.7    82.6       -1.06        46.0        5.60        2.39    
PRN19  6.9    82.0        191.        47.1        5.00        2.54    
PRN20  6.9    79.8        224.        52.7        5.15        2.29    
PRN21  6.9    82.5       -1.71        48.2        5.00        2.35    
PRN22  6.9    80.8        249.        50.2        5.60        2.34    
PRN23  6.8    80.8        3.09        48.2        5.60        2.01    
PRN24  6.6    82.7        242.        50.6        5.86        2.05    
PRN25  6.9    79.1        2.86        47.3        5.74        2.10    
PRN26  5.7    82.2       -29.0        51.3        5.31        2.05    
PRN27  4.9    82.7        4.29        47.2        5.43        2.28    
PRN28  6.6    2.73        37.5        56.8        5.00        2.58    
PRN29  6.7    81.6        2.33        47.1        5.74        2.22    
PRN31  6.7    79.4        550.        50.3        5.46        2.32    
_______________________
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
      95  9 10   95  9 11   95  9 12   95  9 13   95  9 14   95  9 15   95  9 16
prn   3d rss (m)
  1       5.2        4.7        5.4        6.5        5.8        5.7        6.8 
  2       5.4        4.8        4.9        4.0        3.4        3.7        3.6 
  4       5.4        5.5        5.8        5.0        3.8        3.8        5.0 
  5       3.6        2.9        3.4        4.2        4.0        3.5        3.8 
  6       5.8        7.0        8.4        7.7        8.7        8.9       11.4 
  7       9.3        8.9       10.7       11.2        9.1        8.4        7.1 
  9       3.1        3.9        3.4        2.3        2.4        3.2        2.5 
 12       4.0        3.26       3.2        3.0        3.26       3.0        3.3 
 14       5.4        5.9        7.2        6.0        8.3        8.4        8.2 
 15       6.1        4.5        5.2        3.8        5.0        4.0        5.4 
 16       6.4        4.9        6.0        4.8        5.2        9.0        4.8 
 17       5.2        4.2        4.1        5.3        5.4        3.0        5.0 
 18       8.4        9.9        9.0        8.6        8.6        8.6        8.0 
 19       3.0        3.5        3.1        3.2        2.7        2.9        2.4 
 20       5.2        6.7        4.2        4.7        4.2        3.2        3.1 
 21       8.7        6.6       12.5       12.5        8.9       13.7        8.0 
 22       7.8        7.2        7.7        7.7        8.0        7.6        8.5 
 23      11.3       13.0        7.6        6.8        6.1        4.6        3.8 
 24       6.6        5.7        6.3        6.5        6.7        5.6        5.8 
 25       2.4        3.0        2.8        3.5        4.3        4.5        5.3 
 26       3.0        4.3        3.6        3.8        3.4        3.2        3.9 
 27       7.3        7.3                             11.4        4.9        4.3 
 28       6.5        5.4        5.8        7.2        7.9        5.2        7.4 
 29       7.0        7.3        7.5        6.7        5.9        6.3        6.3 
 31       4.6        5.8        4.2       40.5        4.3        4.7        6.2 
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

[Mailed From: [email-masked]]