Subject: [IGSREPORT-1528] Wk 0784 JPL Analysis Report
From: D C Jefferson
Date: Tue, 31 Jan 1995 10:57:01 PST

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IGS Electronic Report    Tue Jan 31 10:57:01 PST 1995      Message Number 1528
******************************************************************************

Author: D C Jefferson
Subject: Wk 0784 JPL Analysis Report

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JPL ANALYSIS REPORT   GPS-WEEK 0784 (DAYS 15-21, DATES 1995 Jan 15 - Jan 21)
******************************************************************************

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/0784.  These files have also been sent to the CDDIS.

______________________________________________________________________________
filename               contents
______________________________________________________________________________
jpl07847.sum           This text file.
jpl07847.erp           Earth rotation parameters for GPS week 784.
jpl0784[0-6].sp3       GPS ephemerides for GPS week 784, sp3 format.
______________________________________________________________________________

SUMMARY FILE UPDATE

We begin in this report including a new table that provides a weekly summary
summary of engineering data for each site analyzed and all GPS satellites.
We will no longer include the site availability and clock repeatability tables.

The first field identifies the receiver or transmitter.  Receivers with
a `.'  in the fifth character do not contribute to the determination of
satellite and earth orientation parameters (that is, are point positioned).
(Note that the same site can appear both as participating in the global 
solution _and_ being point positioned.)  Receivers with a `*' in this 
position are tightly constrained in our analyses. 

The second field identifies the number of days for which a valid clock
solution exists.  In the case of a reference clock (usually ALGO), the
number is estimated from the number of phase points observed during the
week.

The third field contains the weekly rms for the clock solution.  The
fourth field has the average clock solution for the week.

Fields five and six have the rms postfits for the week for code and
phase data.

Field seven has the average arc length in hours, defined as the total
number of phase measurements divided by the total number of phase breaks
divided by 12 (ther are 12 5-minute intervals in 1 hour).

GENERAL

Starting day 18 (Jan 18), we include data from two new sites: GUAM (USGS Guam 
Observatory, Dededo, Guam), and SHAO (Shanghai Observatory, Sheshan, China).
The locations of these sites are such that their positions are estimated along
with the global set of stations used to determine the GPS orbits.  The 
following nominal coordinates were assumed:

   GUAM:  X = -5071321.9000 m,   Y =  3568363.8000 m,    Z =  1488900.8000 m
   SHAO:  X = -2831734.8000 m,   Y =  4675668.0000 m,    Z =  3275370.7000 m

Also beginning day 21 (Jan 21), we include data from ONSA in our global
solution.

Due to potential problems, data from the following stations 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 BOR1 excluded on day 015 (Jan 15).
WARNING: Data from HOB2 excluded on day 016 (Jan 16).
WARNING: PRN31 not used on days 20 and 21 (Jan 20, 21); little or no ephemeris           data available.

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 784 (1995 Jan 15 - Jan 21)
     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
49732.50 -12981  45226   360807  2453    6    6    12     12 32 12 25   81  274 
49733.50 -12937  45501   358385  2392    6    6    13     13 32 12 25   92  264 
49734.50 -12903  45712   355994  2390    6    7    14     14 32 12 25   94  254 
49735.50 -12831  45920   353604  2390    7    8    14     14 32 12 25  121  239 
49736.50 -12755  46079   351228  2362    6    6    13     13 32 12 25  139  178 
49737.50 -12629  46228   348823  2447    6    6    13     13 32 12 24  140  180 
49738.50 -12527  46381   346361  2477    6    7    14     14 32 12 24  143  214 
END ERP TABLE

The following table indicates the "3-dimensional orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 784:
["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)]

JPL ORBIT REPEATABILITY TABLE                GPS week 784 (1995 Jan 15 - Jan 21)
      95  1 15   95  1 16   95  1 17   95  1 18   95  1 19   95  1 20   95  1 21
prn   3d rss (m)
  1       0.36       0.43       0.66       0.92       0.52       0.25       0.28
  2       0.27       0.27       0.23       0.17       0.13       0.47       0.35
  4       0.12       0.18       0.29       0.23       0.14       0.26       0.42
  5       0.19       0.14       0.42       0.36       0.21       0.16       0.14
  6       0.19       0.24       0.21       0.34       0.19       0.28       0.31
  7       0.14       0.23       0.35       0.41       0.20       0.13       0.20
  9       0.13       0.25       0.26       0.27       0.20       0.12       0.18
 12       0.36       0.42       0.52       0.61       0.59       0.52       0.57
 14       0.47       0.40       0.44       0.35       0.27       0.40       0.43
 15       0.32       0.42       0.18       0.17       0.32       0.37       0.22
 16       0.22       0.18       0.32       0.30       0.14       0.11       0.12
 17       0.21       0.31       0.39       0.30       0.31       0.31       0.30
 18       0.17       0.16       0.07       0.09       0.24       0.26       0.08
 19       0.19       0.16       0.13       0.20       0.15       0.20       0.17
 20       0.29       0.34       0.85       1.06       0.22       0.24       0.21
 21       0.18       0.14       0.19       0.12       0.32       0.22       0.27
 22       0.12       0.16       0.34       0.17       0.15       0.34       0.34
 23       0.35       0.36       0.28       0.35       0.38       0.44       0.34
 24       0.34       0.21       0.23       0.38       0.34       0.14       0.17
 25       0.19       0.24       0.22       0.19       0.22       0.20       0.22
 26       0.16       0.13       0.16       0.15       0.15       0.22       0.12
 27       0.14       0.11       0.08       0.09       0.11       0.11       0.17
 28       0.14       0.17       0.30       0.31       0.31       0.26       0.28
 29       0.11       0.17       0.10       0.14       0.15       0.18       0.19
 31       0.13       0.11       0.22       0.17       0.1                       
_______________________
END ORBIT REPEATABILITY TABLE

The following table statistically summarizes this week's "engineering data", as
described above:

JPL ENGINEERING DATA SUMMARY TABLE           GPS week 784 (1995 Jan 15 - Jan 21)
 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   6.9    .636e+04    22.2        51.3        4.16        1.96    
ALGO*  6.9    .           .           116.        6.58        3.43    
AOA1.  6.9    188.        .267        74.4        9.63        1.26    
AREQ   3.9    144.        .368        38.7        5.12        1.98    
BLYT.   .4    .228e+07   -.286e+04    49.7        8.00        6.43    
BOGT   3.3    108.        .263        46.7        6.47        1.26    
BOR1.  6.8    2.81       -1.13        43.6        8.48        .538    
BRAN.  4.8    .784e+06    152.        100.        10.1        3.63    
BRMU   7.0    .792e+07   -.161e+05    44.0        6.19        2.85    
BRUS.  7.0    428.       -4.07        65.9        7.79        3.79    
CAS1   6.8    8.07        494.        39.3        5.59        1.75    
CASA.  4.4    .564e+07   -.145e+05      .         10.0        1.04    
CIT1.  7.0    104.        .313        61.0        8.60        2.28    
DAV1   5.9    .262e+05    124.          .         4.75        1.18    
DRAO.  7.0    .736        2.76        52.3        7.49        3.70    
FAIR*  7.0    2.02       -.246          .         5.32        1.25    
FORT   6.9    167.        1.50        50.9        6.46        2.89    
GODE.  6.9    .223       -.561        63.0        8.25        2.20    
GOLD*  6.8    .433        5.30          .         4.61        2.40    
GRAZ.  5.7    17.6        .215          .         8.87        .876    
GUAM   3.5    128.        .373        71.6        6.50        2.16    
HARV.  6.9    52.6        .191e+04    84.1        10.2        2.37    
HERS.  5.4    .140e+04    625.          .         10.1        1.04    
HOB2.  5.3    .187e+04    16.3        50.3        8.96        .518    
JPLM.  5.5    32.6        284.        38.2        8.62        3.26    
KERG   7.0    169.       -24.1          .         5.16        2.48    
KIRU.  6.9    2.42       -.791        63.6        10.6        1.20    
KIT3   3.9    107.        .291        75.5        4.74        3.52    
KOKB*  7.0    .174       -.303e-01      .         5.74        2.13    
KOSG*  5.1    3.85        2.24          .         3.47        2.61    
KOUR   6.9    2.11        9.49          .         7.86        1.21    
LBCH.  6.8    .465e+04    .563        96.7        10.3        1.13    
MADR*  6.7    .112       -32.0          .         4.59        2.84    
MAS1   6.9    6.67        2.53        53.0        4.17        3.13    
MATE.  6.8    1.04        .669          .         8.74        2.16    
MCMU   1.9    94.9        .269          .         5.50        1.96    
MDO1   7.0    63.4        .432        33.6        4.46        3.22    
METS   5.9    2.07       -.169          .         3.71        2.01    
METS.   .5    7.64       -.188          .         9.00        .871    
NIST.  1.8    36.6       -2.20        50.0        9.04        4.77    
NLIB   6.9    .145        .877        36.0        3.61        3.20    
NYAL.  3.2    .514       -2.31          .         7.55        1.53    
OATT.  6.9    217.        .319        109.        9.73        1.02    
ONSA.   .9    .726e-01    9.80        67.0        11.0        1.88    
PAMA   6.9    18.8        61.8          .         11.9        .264    
PERT   7.0    15.8        38.6        59.5        4.73        3.68    
PIE1.  6.9    .181       -3.77        56.6        8.62        1.79    
POTS.  4.8    .118e+05   -1.21        70.9        7.89        1.85    
QUIN.  6.9    2.63        2.71        66.8        8.73        1.63    
RCM5   6.9    2.39        .385          .         4.77        2.19    
SANT*  7.0    1.14        .476          .         5.73        1.62    
SHAO   3.8    .155e+05    83.2        45.1        3.76        2.22    
STJO   4.9    14.4        139.        58.2        4.63        3.51    
TAIW   3.0    3.33        404.          .         5.05        2.04    
TAIW.  3.9    17.0        608.          .         11.8        1.64    
TIDB*  6.5    120.        .360          .         5.58        2.01    
TMGO   3.0    .121e+04    .242        176.        4.70        2.79    
TMGO.  4.0    42.9        .286        171.        9.14        2.76    
TROM*  7.0    8.82        756.          .         5.78        1.08    
TSKB   5.9    2.34        86.6        70.7        5.00        2.20    
USC1.  6.9    109.        .312        65.8        8.88        2.19    
USUD   1.0    .724        .575        39.0        4.00        2.15    
USUD.  5.8    .720        .629        43.9        9.40        2.38    
VILL.  6.9    324.        1.83        50.5        9.44        4.43    
WEST.  7.0    .366        .683        66.9        8.50        1.62    
WETT*  7.0    313.        2.91          .         4.92        2.12    
WLSN.  6.2    .157e+04    .245        78.8        9.18        .809    
YAR1*  6.8    45.0        .666          .         5.07        3.02    
YELL*  7.0    .372       -1.23        38.3        5.15        1.12    
PRN01  6.1    .347e+04   -33.7        65.3        6.50        1.83    
PRN02  6.7    80.9       -138.        72.6        8.47        1.75    
PRN04  6.9    81.8        8.74        67.8        7.45        1.13    
PRN05  6.8    79.7        85.9        62.1        10.9        1.40    
PRN06  7.0    81.1        589.        65.1        7.00        1.64    
PRN07  7.0    80.6        701.        65.8        6.90        1.50    
PRN09  7.0    82.1       -18.2        68.1        6.90        1.65    
PRN12  7.0    .794       -271.        78.1        5.62        2.36    
PRN14  6.9    83.4        8.41        64.4        7.05        1.24    
PRN15  7.0    3.66        152.        82.7        6.75        1.21    
PRN16  7.0    79.6       -77.4        79.2        8.05        1.29    
PRN17  7.0    82.1       -70.6        67.2        7.18        1.96    
PRN18  7.0    81.0       -5.84        63.8        6.74        1.56    
PRN19  7.0    81.7        89.7        71.5        6.49        1.66    
PRN20  6.6    82.0        98.3        68.4        8.34        1.35    
PRN21  7.0    82.6       -11.7        67.7        6.47        2.13    
PRN22  6.6    82.9        188.        75.0        10.7        1.26    
PRN23  6.9    80.5        5.64        66.0        7.15        1.85    
PRN24  7.0    83.6        323.        63.7        7.44        1.53    
PRN25  7.0    81.5        .416        69.2        7.31        1.47    
PRN26  7.0    82.3       -52.5        75.6        7.02        1.64    
PRN27  7.0    81.5        17.6        64.2        6.54        2.01    
PRN28  7.0    2.27        62.1        73.5        7.02        1.61    
PRN29  7.0    83.3        5.54        63.6        6.46        1.64    
PRN31  4.0    222.        79.3        72.9        6.73        1.85    
_______________________
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  1 15   95  1 16   95  1 17   95  1 18   95  1 19   95  1 20   95  1 21
prn   3d rss (m)
  1      10.0        8.6        5.6        4.6        5.5        6.4        7.6 
  2       5.8        6.8        7.7        6.2        7.8        7.2        6.9 
  4      16.6       12.4       12.9       13.7       13.0       11.2       12.3 
  5       9.5        7.3        7.8        8.4        8.2        7.0        7.4 
  6       5.0        6.0        6.3        5.3        5.3        5.8        5.8 
  7       6.0        5.8        5.7        5.5        6.0        5.7        6.5 
  9      10.1       11.4       11.7        9.9        9.0        9.2        9.1 
 12       3.3        4.0        3.0        2.8        3.0        2.7        3.1 
 14       4.2        4.0        3.8        4.0        4.6        7.7        4.0 
 15      10.0       11.4       13.1       14.1        9.2        8.4       12.8 
 16      11.8        6.9        7.4        6.7        6.8        9.0        7.0 
 17       9.0       10.0       12.1       11.7       10.6        9.2        9.5 
 18       5.5        4.7        3.1        5.5        4.7        4.4        4.3 
 19       9.6       10.7        8.6        9.9        9.8        9.6       11.6 
 20       6.8        7.5        6.6        6.0        6.2        5.6        5.5 
 21       6.2        4.2        5.9        5.4        5.1        6.3        8.9 
 22       7.9        8.1        8.0        7.7        9.0        6.5        6.4 
 23      23.1       18.9       17.8       18.7       20.5       22.6       13.6 
 24      14.3       13.5       12.3       11.0       11.6       12.7       12.8 
 25       9.3        9.5        6.5        6.1        8.2        8.8        4.5 
 26       8.4        8.9        8.7        6.0        6.7        7.5        6.0 
 27       4.6        8.0        9.4        6.0        6.6        7.9        8.6 
 28       6.9        7.1        4.2        4.4        4.4        2.9        3.4 
 29       7.6        7.2        7.3        6.6        6.2        6.0        4.3 
 31       6.4       65.9        5.7        6.9        5.4                       
_______________________
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

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