Subject: [IGSMAIL-80] UTX analysis report
From: Bob E. Schutz
Date: 27 AUG 1992 14:20:12

***********************************************************************
IGS Electronic Mail       27-AUG-1992 14:20:12       Message Number 80
***********************************************************************
 
==============================================================================
                   THIS FILE CONTAINS 5 MESSAGES
==============================================================================

From:     Bob E. Schutz
Subject:  UTX analysis report
          -------------------

                   IGS ANALYSIS CENTER REPORT
     CENTER FOR SPACE RESEARCH/UNIVERSITY OF TEXAS AT AUSTIN

Report Period:  1992 August 2-August 8
                (Days 215-221, GPS Week 656)

Report Date:  1992 August 24

This report provides additional information about GPS products generated
by the Center for Space Research/University of Texas at Austin (UTX) for
the International GPS Geodynamics Service (IGS). 

PRODUCTS SUMMARIZED

GPS ephemerides and Earth rotation parameters were generated for the
reporting period.  The Earth rotation parameters do not currently include
UT1.  The results may be obtained from the NASA CDDIS.  The currently
available files are:

   UTX0656*.EPH:  GPS ephemerides for GPS Week 656 (SP3 format), * represents
                  0-Sunday,...,6-Saturday
   UTX06567.SUM:  This report file
   UTX06567.ERP:  Earth rotation summary file

The currently available products include independent one-day arcs used for
Earth rotation parameter determination.  Anti-spoofing (AS) was active on
Days 215, 216 and 221.  Some Rogue receivers recorded no data from AS-active
satellites while others recorded noisier than normal phase.  These effects
are reflected in the daily solution statistics below.  The "codeless" Minimac
and Trimble performed satisfactorily during AS.

CORE STATION SUMMARY

The Core Station data used in the solutions is given below.  Missing data
on some days does not imply that no data are available.  X in the table 
indicates that data from that site were used in the solution.  All receivers
are Rogue, except as noted.

                                            DATA USED IN SOLUTIONS
                                                 Days 215-221
                                                Day of Week 656
                                              S  M  T  W  T  F  S
                                              U  O  U  E  H  R  A
                                              N  N  E  D  U  I  T

        Site                         Code

Algonquin, Ontario      Canada       ALGO     X  X  X  X  X  X  X
Fairbanks, AK           USA          FAIR     X  X  X  X  X  X  X
Hartebeestoek           S. Africa    HART     X  X  X  X  X  X  X
Hobart, Tasm. (Minimac) Australia    HOBA     X  X  X  X  X  X  X             
Kokee Park, HI          USA          KOKB     X  X  X  X  X  X  X
Kootwijk                Netherlands  KOSG     X  X  X  X  X  X  X
Madrid (DS60)           Spain        MADR     X  X  X  X  X  X  X
Mas Palomas (ESOC)      Canary I.    MASP     X  X  X  X  X  X  X
McMurdo                 Antarctica   MCMU     X  X  X  X  X  X  X
Mojave, CA (Minimac)    USA          MOJ1     X  X  -  -  -  -  X
Ny Alesund              Norway       NYAL     X  X  X  X  X  X  X
Onsala                  Sweden       ONSA     X  X  X  X  X  X  X
Papeete                 Tahiti       PAMA     X  X  X  X  X  X  X
Pinyon (PGGA), CA       USA          PINY     X  X  X  X  X  X  X
Santiago                Chile        SANT     X  X  X  X  X  X  X
St. Johns, Newfoundland Canada       STJO     X  X  X  X  X  X  X
Tai-shi                 Taiwan       TAIW     X  X  X  X  X  X  X
Tidbinbilla (DS40)      Australia    TIDB     X  X  X  X  X  X  X
Townsville (Trimble)    Australia    TOWN     X  X  X  X  X  X  X         
Usuda                   Japan        USUD     X  X  X  X  X  X  X
Wellington (Trimble)    New Zealand  WELL     X  X  X  X  X  X  X             
Westford, MA (Minimac)  USA          WES1     X  X  -  -  -  -  X            
Wettzell                Germany      WETT     X  X  X  X  X  X  X
Yaragadee               Australia    YAR1     X  X  X  X  X  X  X
Yellowknife             Canada       YELL     X  X  X  X  X  X  X

                               Totals        25 25 23 23 23 23 25

SATELLITE SUMMARY

The "percent time in shadow" is taken from Day 218.

  PRN        PERCENT TIME                   COMMENTS
               IN SHADOW

    2             4.2      Nominal              
    3             0.0      Nominal
   11             0.0      Nominal
   12             0.0      Nominal
   13             0.0      Nominal
   14             0.0      Nominal
   15             3.8      Nominal
   16             0.0      Nominal
   17             4.9      Nominal
   18             0.0      Nominal
   19             0.0      Nominal
   20             3.1      Nominal
   21             0.0      Nominal
   23             0.0      Nominal
   24             0.4      Nominal
   25             0.0      Nominal
   28             0.0      Nominal

SOLUTION CHARACTERISTICS

Force Model:  IERS Standards
Reference Frame:  Defined by fixed stations in SLR (CSR91L03) and
                  VLBI (GLB718)
Software:  MSODP1/TEXGAP
Data:  L1/L2 GPS phase sampled at 2 min., processed as double differences
Minimum Elevation:  15 degrees
Arc Length:
   UTX0656*.EPH:   Independent 1-day arcs from which ERP products are obtained
   UTX06517.ERP:   1-day arcs
Adjusted Parameters:
   6 epoch elements, nongravitational force parameters for each satellite
   Zenith delay parameter each 2.5 hr for each station
   Double difference bias parameters
   Pole position (in one-day arcs)
Solution Statistics:

The independent one day arcs used for the Earth rotation solutions have
the characteristics given below:

   UTX06567.ERP    
                        Day->      0     1     2     3     4     5     6

     Passes:                     227   335   483   504   486   388   244
     Double differences (DD):  11417 17723 25782 27013 26289 24833 11667
     RMS of DD (cm):            5.85  3.75  2.39  2.19  2.12  1.52  5.19
       [Day 0=Sunday; Day 6=Saturday]
       All satellites included for each day
        
----------------------------
For further information:
   Prof. B. E. Schutz
   [email-masked]

or Dr. P. A. M Abusali
   [email-masked]

==============================================================================

From:     Tom Clark
Subject:  Richmond VLBI Station EST MORTE
          -------------------------------

I is sad to report the demise of the Richmond, FL geodetic VLBI station
as a result of the fury of Hurricane Andrew.

The Richmond antenna was one of the original Howard Tatel designs, 60 feet
in diameter. It was originally built for the Carnegie Institute Dept. of
Terrestrial Magnetism in the late 1950's, when it was located at Derwood,
Maryland. About 10 years ago, Bill Carter of the Nation Geodetic Survey had
it relocated to Richmond where it was jointly operated by the US Naval
Observatory and NGS as one of the prime stations of the POLARIS, IRIS
and NEOS Earth Orientation networks, with technical support from NASA's 
Crustal Dynamics Project.

Richmond iis also a prime Geodetic GPS facility and in CIGNET, IGS and
FLINN. It had recently been equipped with a JPL ROGUE GPS receiver. The
status of the GPS hardware is unknown.

The following report from USNO's Jim Martin at the Washington Correlator
gives the pertinent information as we know it:

>Date: Tue, 25 Aug 92 14:54:08 edt
>From: [email-masked]
>To: [email-masked]
>Subject: Richmond status
>
>  We have received numerous inquires about the status of Richmond
>  after being struck by Hurricane Andrew. As a former station
>  director at Richmond I'm sad to announce that it appears that
>  the Richmond antenna has been destroyed. Tim Carroll, station
>  Director, managed to find a working phone and called this morning.
>  He described the antenna as a mass of twisted metal pointed at
>  the ground. The station itself sustained some damage but most
>  of the equipment, including the maser and cesium clocks, is
>  OK. Not all of the station personnel have been heard from but
>  that is understandable since the area is almost impassable.
>  Ron Andrukitis, who lived in a mobile home in Homestead, weathered
>  the storm at the station. His home is gone. The emergency generators
>  have also been knocked out. A relief team from USNO is on its
>  way down at this moment. I think the MarkIII rack is mostly ok.
>  One terminal was lost. The receiver was taken off  the antenna and
>  into the station before the storm.
> - Jim Martin

Richmond is located between Coral Gables and Homestead. The news reports
are that the Homestead had 90% devastation. The National Hurricane Center
at Coral Gables reported peak winds of 164 MPH when the wind sensor broke,
and also lost all of its satellite communications dishes.

Tom Clark

==============================================================================

From:    Ch. Reigber
Subject: GFZ analysis report
         -------------------

Report for GPS Week 655 (Days 208-214) from GFZ
===============================================

Remark: The delayed product dissemination is due to an
        internal GFZ brain storming meeting last week !

This report is generated by the GeoForschungsZentrum Potsdam (GFZ) 
on a weekly basis for the International GPS Geodynamics Service (IGS). 

PRODUCT SUMMARY 

   GFZ06557.EPH:  GPS ephemerides for GPS Week 655 (SP3 format, pos. and vel.)
   GFZ06557.ERP:  Earth rotation parameter (UT1 corrections are not included)
   GFZ06557.CLK:  ST and SV clock parameters of each observation epoch (the
                  maser-based clock at Fairbanks is taken as reference clock)
   GFZ06557.SUM:  Summary file for reporting week 

The above specified products are available at CDDIS. The ERP results are 
submitted additional to IERS Central Bureau and IERS Sub Bureau for Rapid
Service and Predictions.

CORE STATION SUMMARY

The Core Station data used in the solutions is given below.  

                                      Day of Week 655
                                    S  M  T  W  T  F  S
                                    U  O  U  E  H  R  A
        Site                        N  N  E  D  U  I  T
Name            Code      
---------------------------------------------------------
Algonquin       ALGO                X  X  X  X  X  X  X
Fairbanks       FAIR                X  X  X  X  X  X  X
Goldstone       DS10                X  X  X  X  X  X  X
Hartebeesthoek  HART                X  X  X  X  X  X  X
Kokee Park      KOKR                X  X  X  X  X  X  X
Mc Murdo        MCMU                X  X  X  X  X  X  X
Ny-Alesund      NALL                X  X  X  X  X  X  X
Pamatai         PAMA                X  X  X  X  X  X  X
Santiago        SANT                X  X  X  X  X  X  X
Tai Shi         TAIW                X  X  X  X  X  X  X	
Tromsoe         TROM                X  X  X  X  X  X  X 
Usuda           USUD                X  X  X  X  X  X  X
Wettzell        WTZ1                X  X  X  -  X  X  X
Yellowknife     YELL                X  X  X  X  X  X  X
Yarragadee      YAR1                X  X  X  X  X  X  X
Tidbinbilla     TIDB                -  X  X  X  X  X  X
---------------------------------------------------------

SOLUTION CHARACTERISTICS

1. Analysis Center: GFZ/DLR
2. Analysing Team: D. Angermann, R. Galas, Th. Nischan,
                   Ch. Reigber, S.Y. Zhu 
3. Solution Identifier: EPH(GFZ)92G01-DDD
                        ERP(GFZ)92G02-DDD
                        CLK(GFZ)92G01-DDD (only relative)
4. Software used: GEPARD4.0
5. Defintion of Terrestrial Reference Frame
   Origin: Nominally ITRF-90
   Orientation: Nominally ITRF-90
   Reference Epoch: 1992.352 (MJD 48750)
   Fixed set of stations: Y. Bock Solution (IGS Message No.56)
   ALGO, YELL, FAIR, KOKR, TROM, WTZ1, YAR1, USUD, NALL, PAMA,
   MCMU, TAIW, DS10
6. Data used:
   - undifferenced pseudo ranges and carrier phases
   - 2-day arc solutions with one day overlap
7. Adjusted parameters:
   - State vector of all GPS satellites
   - Daily polar motion
   - Coordinate corrections for non-fixed stations
   - Troposheric zenith path delay 
   - Solar radiation scale and y-bias 
   - Ambiguities
   - ST and SV clock parameters of each observation epoch (the 
     maser-based clock at Fairbanks is taken as reference clock)

SOLUTION STATISTICS

                         Arc No.      0     1     2     3     4     5     6    
   ------------------------------------------------------------------------
   Number of observations         45616 46098 42754 45680 50338 35492 14393 
   RMS of carrier phases [cm]       1.3   1.4   1.2   1.5   1.5   1.6   4.8
   RMS of code measurements [cm]   50.1  50.6  49.7  50.4  51.1  55.7  44.3
   ------------------------------------------------------------------------

INFORMATIONS TO PRODUCT GENERATION

  The calculation of the 7-day ephemerides file is described below.

            Day of GPS Week 655        [Day 0=Sunday; Day 6=Saturday]
  Arc No.   0   1   2   3   4   5   6    
       0     XXXX----
       1         XXXX----
       2             XXXX----
       3                 XXXX----
       4                     XXXX----
       5                         XXXX----
       6                             XXXX----

   XXXX : The first day of the 2-day arc is used for ephemeris
          dissemination
   ---- : The second day is used for quality control by overlap

-  GFZ06557.EPH (Seven 1-day segments)
   ============

   In the table below the overlap rms differences [m] in radial,
   cross- and along-track component are presented.

 prn            208    209    210    211    212    213    214 |  Mean
======================================================================
   2 radial   0.369  0.203  0.355  0.343  0.299  0.282   *)   |  0.309
   2 cross    0.491  0.292  0.358  0.554  0.344  0.337        |  0.396
   2 along    0.676  0.488  0.673  0.735  0.614  0.488        |  0.612
----------------------------------------------------------------------
   3 radial   0.160  0.261  0.229  0.214  0.230  0.277  ----- |  0.229
   3 cross    0.149  0.362  0.194  0.390  0.306  0.284  ----- |  0.281
   3 along    0.346  0.525  0.572  0.567  0.427  0.397  ----- |  0.472
----------------------------------------------------------------------
  11 radial   0.069  0.120  0.247  0.161  0.266  0.138  0.226 |  0.175
  11 cross    0.376  0.215  0.504  0.316  0.334  0.273  0.676 |  0.385
  11 along    0.377  0.241  0.533  0.223  0.450  0.277  0.503 |  0.372
----------------------------------------------------------------------
  12 radial   0.694  0.366  0.240  0.360  0.285  0.269  0.512 |  0.389
  12 cross    1.029  0.372  0.269  0.615  0.456  0.216  0.595 |  0.507
  12 along    1.690  0.769  0.512  0.774  0.695  0.588  1.109 |  0.877
----------------------------------------------------------------------
  13 radial   0.066  0.240  0.149  0.161  0.155  0.159  0.187 |  0.160
  13 cross    0.368  0.415  0.423  0.455  0.567  0.350  0.778 |  0.479
  13 along    0.372  0.470  0.231  0.376  0.430  0.424  0.570 |  0.410
----------------------------------------------------------------------
  14 radial   0.296  0.218  0.353  0.389  0.241  0.231  0.208 |  0.277
  14 cross    0.366  0.222  0.614  0.659  0.269  0.220  0.389 |  0.391
  14 along    0.514  0.394  0.988  0.904  0.568  0.493  0.515 |  0.625
----------------------------------------------------------------------
  15 radial   0.523  0.426  0.490  0.585  0.554  0.239  0.310 |  0.447
  15 cross    0.496  0.478  0.590  0.621  0.470  0.418  0.458 |  0.504
  15 along    1.021  0.987  1.104  1.415  0.856  0.529  0.740 |  0.950
----------------------------------------------------------------------
  16 radial   0.309  0.200  0.194  0.238  0.254  0.146   *)   |  0.223
  16 cross    0.370  0.258  0.262  0.598  0.483  0.274        |  0.374
  16 along    0.617  0.417  0.347  0.480  0.586  0.351        |  0.466
----------------------------------------------------------------------
  17 radial   0.522  0.502  0.415  0.575  0.487  0.225   *)   |  0.454
  17 cross    0.468  0.408  0.400  0.522  0.518  0.511        |  0.471
  17 along    1.220  0.793  1.039  1.050  1.040  0.529        |  0.945
----------------------------------------------------------------------
  18 radial   0.194  0.135  0.285  0.284  0.207  0.127  0.245 |  0.211
  18 cross    0.242  0.334  0.311  0.398  0.186  0.327  0.441 |  0.320
  18 along    0.403  0.326  0.608  0.543  0.480  0.338  0.670 |  0.481
----------------------------------------------------------------------
  19 radial   0.300  0.344  0.332  0.274  0.236  0.263  0.237 |  0.284
  19 cross    0.449  0.281  0.288  0.319  0.262  0.279  0.412 |  0.327
  19 along    0.677  0.677  0.638  0.719  0.548  0.525  0.621 |  0.629
----------------------------------------------------------------------
  20 radial   0.390  0.317  0.342  0.353  0.459  0.117    *)  |  0.330
  20 cross    0.396  0.310  0.411  0.261  0.520  0.176        |  0.346
  20 along    0.679  0.568  0.734  0.626  1.022  0.312        |  0.657
----------------------------------------------------------------------
  21 radial   0.320  0.144  0.634  0.177  0.173  0.174    *)  |  0.270
  21 cross    0.325  0.269  0.713  0.252  0.399  0.251        |  0.368
  21 along    0.649  0.367  1.320  0.402  0.428  0.404        |  0.595
----------------------------------------------------------------------
  23 radial   0.154  0.128  0.158  0.216  0.088  0.137    *)  |  0.147
  23 cross    0.247  0.253  0.218  0.221  0.191  0.262        |  0.232
  23 along    0.279  0.309  0.258  0.361  0.329  0.256        |  0.299
----------------------------------------------------------------------
  24 radial   0.616  0.364  0.478  0.428  0.314  0.138   *)   |  0.390
  24 cross    0.530  0.353  0.400  0.349  0.285  0.254        |  0.362
  24 along    1.290  0.727  0.864  0.788  0.601  0.399        |  0.778
----------------------------------------------------------------------
  25 radial   0.369  0.230  0.273  0.237  0.295  0.288   *)   |  0.282
  25 cross    0.467  0.241  0.394  0.229  0.383  0.354        |  0.345
  25 along    0.742  0.483  0.485  0.409  0.618  0.488        |  0.537
----------------------------------------------------------------------
  26 radial   0.496  0.254  0.341  0.292  0.272  0.206   *)   |  0.310
  26 cross    0.456  0.297  0.597  0.399  0.446  0.383        |  0.430
  26 along    1.018  0.568  0.629  0.612  0.675  0.463        |  0.661
----------------------------------------------------------------------
  28 radial   0.289  0.222  0.366  0.273  0.299  0.192   *)   |  0.274
  28 cross    0.374  0.269  0.621  0.672  0.387  0.399        |  0.454
  28 along    0.664  0.378  0.634  0.626  0.548  0.391        |  0.540
======================================================================

  *): AS affected satellites have not been calculated for day 214 

-  GFZ06557.ERP
   ============

   Solution identifier for ERP-Results:
   * GPS week 650-653:   ERP(GFZ)92G01-DDD 
   * since GPS week 654: ERP(GFZ)92G02-DDD
   Please notice, that these two solutions are related to
   different reference frames.
    
   MJD      x    sigmax    y    sigmay

 48829.5 -.0982  .0001  0.4363  .0002
 48830.5 -.0961  .0003  0.4383  .0003
 48831.5 -.0943  .0003  0.4405  .0002
 48832.5 -.0927  .0003  0.4429  .0002
 48833.5 -.0908  .0003  0.4444  .0003
 48834.5 -.0876  .0003  0.4463  .0003
 48835.5 -.0853  .0006  0.4482  .0007

-  GFZ06557.CLK
   ============
   
   The clock parameter file is avaibable at CDDIS.
   The format of this file is described in the
   IGS Message No. 55.

==============================================================================

From:    J.F. Zumberge
Subject: JPL analysis report
         -------------------

Submitted by

J F Zumberge, G Blewitt, M B Heflin, D C Jefferson, F H Webb

all at the Jet Propulsion Laboratory, California Institute of Technology, 
Pasadena, CA  91109.

The following files have been posted on BODHI (for access to BODHI contact
[email-masked]):

______________________________________________________________________________
filename               contents
______________________________________________________________________________
jpl06577.sum           This text file.
jpl06577.erp           Earth rotation parameters for GPS week 657.
jpl06577.sp1           GPS ephemerides for GPS week 657, sp1 format.
jpl06577.sp3            "       "       "   "   "    " , sp3   "   .
______________________________________________________________________________

Cross-correlated data from Rogues operating when A-S is in effect have
noisy L2 due to a software bug in the receiver RAM manager which has been
isolated and is currently being fixed. Results for Sunday Aug 09 and
Saturday Aug 15 are therefore not included in the analysis for GPS week 657.
(The August 10 analysis reflects only the non-A-S portion of the day.)

In addition, this GPS week marks the first inclusion of PRN26 in JPL's 
analysis. Because the motion of this satellite was poorly modeled for several
weeks following its launch, its data have been excluded until now.
So as not to affect the results of the other orbiters, we have deweighted its
data for this week. As verified by the Orbit Repeatability Table below,
PRN26 is now well modeled. In subsequent weeks we will weight its data normally.

JPL UTPM TABLE                               GPS week 657 (1992 Aug 10 - Aug 14)
  MJD       X        Y       UT1R-UTC XSIG    YSIG   UTSIG  RMS  XYC  XUC  YUC STA SAT PASS    
           ''        ''        sec     ''     ''      sec
 48844.5  -.07053   .46903   .00000  .00019  .00022  .00000  .0  .04  .00  .00
27 18  0
 48845.5  -.06888   .47095   .00000  .00009  .00011  .00000  .0  .00  .00  .00
26 18  0
 48846.5  -.06651   .47319   .00000  .00009  .00010  .00000  .0  .06  .00  .00
27 18  0
 48847.5  -.06481   .47541   .00000  .00008  .00009  .00000  .0  .02  .00  .00
28 18  0
 48848.5  -.06271   .47661   .00000  .00009  .00009  .00000  .0  .06  .00  .00
28 18  0
END UTPM TABLE

The following table indicates the 3-dimensional "orbit repeatability", as 
defined in IGS Mail Message 37, for GPS week 657 (excluding Aug 9 and Aug 15): 

JPL ORBIT REPEATABILITY TABLE                GPS week 657 (1992 Aug 10 - Aug 14)
                 92  8 10   92  8 11   92  8 12   92  8 13   92  8 14
prn    rms (m)
  2                  1.1        1.65       1.48       1.73       1.3
  3                  0.7        0.47       0.74       0.58       0.3
 11                  0.6        0.46       0.43       0.50       0.4
 12                  0.4        0.42       0.75       1.00       1.1
 13                  1.0        0.39       0.70       0.65       0.4
 14                  1.2        0.57       1.27       1.05       1.3
 15                  1.0        0.95       0.65       0.86       1.4
 16                  0.3        0.70       0.55       0.75       1.1
 17                  1.0        0.90       0.81       0.99       0.4
 18                  0.3        0.54       0.72       0.85       1.1
 19                  0.4        0.80       0.61       0.73       0.7
 20                  0.5        0.96       1.14       1.02       0.6
 21                  0.7        1.07       0.87       1.06       1.2
 23                  1.6        2.61       0.72       0.81       0.7
 24                  0.5        0.54       0.63       0.98       1.1
 25                  1.0        0.87       0.81       0.60       0.3
 26                  1.3        2.17       0.96       1.14       1.1
 28                  0.4        1.00       0.77       0.76       0.5
END ORBIT REPEATABILITY 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
                 92  8 10   92  8 11   92  8 12   92  8 13   92  8 14
prn    rms (m)
  2                  6.4        6.6       11.9       10.0        6.5
  3                 10.2        9.8       10.4       15.5       12.7
 11                 10.1        6.5        6.9        6.6        6.1
 12                 16.4       13.9        8.2       14.7       21.3
 13                  7.2        5.9        7.4        5.7        6.2
 14                  8.4        6.7        6.1        5.6        9.2
 15                  5.4        5.6        5.0        7.1        9.2
 16                  8.4       10.3        7.6        6.9        6.5
 17                  6.3        5.8        4.6        5.0        6.8
 18                 12.6       11.3        9.7        9.1        7.4
 19                  3.4        3.2        5.0        5.3        4.1
 20                  4.4        4.1        3.8        5.3        4.1
 21                  7.2        5.9        4.9        4.7        5.1
 23                  5.0        5.0        7.0        7.6        4.6
 24                 12.1       16.2       13.4       13.7       13.4
 25                  7.3        9.5        9.0        6.2        6.1
 26                  4.2        4.3        4.0        4.4        4.3
 28                  3.6        3.1        3.2        3.2        3.4
END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES

==============================================================================

Message inbox:191 -  Read
From:     IERS CB
Subject:  EARTH ORIENTATION Bulletin numero 5 - 26 August 1992-
          ----------------------------------------------------

                  *******************************************
                  *                                         *
                    IGS'92 EARTH ORIENTATION BULLETIN   5
                  *                                         *
                  *******************************************
                                                           26 AUGUST 1992

 1 - EARTH ORIENTATION PARAMETERS (IERS/CB evaluation) : EOP(IERS) 90 C 04

    Date      MJD         x       y       UT1-UTC
    1992                    0.0001"       0.00001s
     (0h UTC)

   JUL  20    48823    -1152.0  4202.0     41826.8
   JUL  21    48824    -1126.0  4227.0     41671.5
   JUL  22    48825    -1103.0  4250.0     41517.3
   JUL  23    48826    -1081.0  4273.0     41368.8
   JUL  24    48827    -1061.0  4294.0     41229.3

   JUL  25    48828    -1041.0  4314.0     41097.9
   JUL  26    48829    -1021.0  4334.0     40974.1
   JUL  27    48830    -1001.0  4353.0     40854.1
   JUL  28    48831     -981.0  4372.0     40727.8
   JUL  29    48832     -962.0  4390.0     40586.9

   JUL  30    48833     -943.0  4408.0     40421.8
   JUL  31    48834     -924.0  4427.0     40233.5
   AUG   1    48835     -904.0  4451.0     40027.0
   AUG   2    48836     -883.0  4477.0     39811.1
   AUG   3    48837     -862.0  4501.0     39600.2

   AUG   4    48838     -843.0  4525.0     39404.3
   AUG   5    48839     -824.0  4545.0     39229.4
   AUG   6    48840     -805.0  4560.0     39074.5
   AUG   7    48841     -786.0  4578.0     38937.4
   AUG   8    48842     -766.0  4597.0     38811.6

   AUG   9    48843     -745.0  4617.0     38692.5
   AUG  10    48844     -725.0  4639.0     38571.7
   AUG  11    48845     -705.0  4662.0     38445.0
   AUG  12    48846     -686.0  4685.0     38306.4
   AUG  13    48847     -667.0  4707.0     38153.2

   AUG  14    48848     -647.0  4728.0     37985.7
   AUG  15    48849     -626.0  4747.0     37807.3
   AUG  16    48850     -605.0  4764.0     37622.1
   AUG  17    48851     -582.0  4778.0     37435.8
   AUG  18    48852     -560.0  4791.0     37256.0

 2 - INDIVIDUAL SERIES OF EARTH ORIENTATION PARAMETERS
     The series listed hereafter,obtained  by the IGS Processing Centres,
   are  described in  the IGS'92 Earth Orientation Bulletin number 2 and
   in the IGSMail Messages .

   Note : AS (antispoofing) was activated on several satellites on
          August 1, 2, 3, 8 and 9.

         2 -a - EOP(CODE) 92 P 02
                Units : 0.0001" for x,y, 0.00001s for UT1.

     Date                                                        Uncertainties
     1992      MJD        x       y      UT1-UTC  Passes  Span   x    y
UT1-UTC
                                                          hours

   JUL  25   48828.50  -1031.5  4327.4   41113.4          72.0   1.0  1.2   0.6
   JUL  26   48829.50  -1000.0  4333.9   40938.7          72.0   0.9  1.1   0.7
   JUL  27   48830.50   -981.4  4354.6   40808.7          72.0   0.8  0.9   0.6
   JUL  28   48831.50   -975.3  4390.2   40664.7          72.0   0.9  1.0   0.6
   JUL  29   48832.50   -938.9  4409.8   40510.4          72.0   1.0  1.0   0.6

   JUL  30   48833.50   -941.6  4413.5   40334.3          72.0   1.0  1.1   0.6
   JUL  31   48834.50   -913.4  4433.0   40138.0          72.0   1.0  1.0   0.6
   AUG   1   48835.50   -883.5  4483.1   39930.2          72.0   1.6  1.5   0.9
   AUG   2   48836.50   -875.3  4495.1   39718.1          72.0   1.7  1.5   1.0
   AUG   3   48837.50   -836.3  4515.3   39536.2          72.0   1.1  1.2   1.2

   AUG   4   48838.50   -827.8  4544.1   39375.8          72.0   0.8  0.7   0.8
   AUG   5   48839.50   -805.5  4561.0   39226.8          72.0   0.9  0.8   0.5
   AUG   6   48840.50   -792.8  4570.1   39094.3          72.0   0.9  0.7   0.5
   AUG   7   48841.50   -775.1  4592.8   38972.1          72.0   0.7  0.7   0.5
   AUG   8   48842.50   -746.3  4628.1   38854.8          72.0   1.5  1.6   0.9

         2 -b - EOP(CSR)  92 P 01
                Units : 0.0001" for x,y, 0.00001s for UT1.

   A recent description of this analysis can be found in IGSMail 78.

     Date                                                        Uncertainties
     1992      MJD        x       y      UT1-UTC  Passes  Span   x    y
UT1-UTC
                                                          hours

   JUL  26   48829.50  -1003.4  4383.4              391          1.8  1.8
   JUL  27   48830.50   -981.4  4401.5              429          1.6  1.6
   JUL  28   48831.50   -962.8  4417.9              379          1.9  1.9
   JUL  29   48832.50   -943.3  4446.9              371          2.3  2.6
   JUL  30   48833.50   -920.8  4461.4              422          1.6  1.6

   JUL  31   48834.50   -903.0  4483.7              427          1.6  1.6
   AUG   1   48835.50   -840.5  4506.9              252         17.5 26.0
   AUG   2   48836.50   -828.9  4564.2              227         28.0 35.5
   AUG   3   48837.60   -842.9  4567.9              335         15.0 15.0
   AUG   4   48838.50   -821.6  4568.7              483          1.3  1.3

   AUG   5   48839.50   -792.4  4589.7              504          1.3  1.2
   AUG   6   48840.50   -794.2  4612.7              486          1.4  1.7
   AUG   7   48841.50   -769.2  4629.8              403          1.6  2.2
   AUG   8   48842.50   -725.6  4689.8              244         24.5 39.0

         2 -c - EOP(ESOC) 92 P 01
                Units : 0.0001" for x,y, 0.00001s for UT1.

   A recent description of this analysis can be found in IGSMail 78.

     Date                                                        Uncertainties
     1992      MJD        x       y      UT1-UTC  Passes  Span   x    y
UT1-UTC
                                                          hours

   AUG   1   48835.50   -859.3  4450.6                    24.0   3.3  3.6
   AUG   2   48836.50   -866.9  4495.0                    24.0   1.9  2.4
   AUG   3   48837.50   -842.7  4561.5                    24.0   2.4  2.9
   AUG   4   48838.50   -845.5  4548.4                    24.0   2.9  3.3
   AUG   5   48839.50   -804.6  4571.5                    24.0   3.2  3.0

   AUG   6   48840.50   -782.5  4592.1                    24.0   3.3  2.7
   AUG   7   48841.50   -749.0  4588.9                    24.0   3.7  3.9
   AUG   8   48842.50   -714.1  4626.0                    24.0   2.0  2.3
   AUG   9   48843.50   -728.9  4654.4                    24.0   2.7  2.9
   AUG  10   48844.50   -700.1  4711.4                    24.0   2.1  2.1

   AUG  11   48845.50   -699.4  4729.8                    24.0   3.4  3.1
   AUG  12   48846.50   -642.5  4726.3                    24.0   2.1  2.0
   AUG  13   48847.50   -630.1  4738.7                    24.0   2.2  2.3
   AUG  14   48848.50   -602.8  4748.0                    24.0   2.9  2.6
   AUG  15   48849.50   -601.3  4783.4                    24.0   2.7  3.0

         2 -d - EOP(GFZ)  92 P 01
                Units : 0.0001" for x,y, 0.00001s for UT1.

   A recent description of this analysis can be found in IGSMail 66.

     Date                                                        Uncertainties
     1992      MJD        x       y      UT1-UTC  Passes  Span   x    y
UT1-UTC
                                                          hours

   JUL  19   48822.50  -1142.0  4225.0                           3.0  3.0
   JUL  20   48823.50  -1121.0  4256.0                           3.0  3.0
   JUL  21   48824.50  -1090.0  4273.0                           3.0  3.0
   JUL  22   48825.50  -1070.0  4290.0                           4.0  3.0
   JUL  23   48826.50  -1067.0  4311.0                           4.0  4.0

   JUL  24   48827.50  -1041.0  4329.0                           3.0  3.0
   JUL  25   48828.50  -1004.0  4343.0                           3.0  3.0

         2 -e - EOP(JPL)  92 P 02
                Units : 0.0001" for x,y, 0.00001s for UT1.

   A recent description of this analysis can be found in IGSMail 75.

     Date                                                        Uncertainties
     1992      MJD        x       y      UT1-UTC  Passes  Span   x    y
UT1-UTC
                                                          hours

   JUL  26   48829.50   -994.6  4361.4                           0.9  1.1
   JUL  27   48830.50   -981.6  4374.2                           0.8  0.9
   JUL  28   48831.50   -961.4  4394.7                           1.0  1.1
   JUL  29   48832.50   -941.6  4412.7                           0.9  1.0
   JUL  30   48833.50   -924.9  4435.6                           0.9  0.9

   JUL  31   48834.50   -902.9  4457.0                           0.8  0.9
   AUG   3   48837.50   -840.2  4526.1                           1.8  2.1
   AUG   4   48838.50   -818.0  4544.3                           0.8  0.9
   AUG   5   48839.50   -799.9  4563.3                           0.8  0.9
   AUG   6   48840.50   -780.7  4581.2                           0.9  0.9

   AUG   7   48841.50   -762.7  4604.1                           0.9  1.0

         2 -f - EOP(SIO)  92 P 03
                Units : 0.0001" for x,y, 0.00001s for UT1.

   A recent description of this analysis can be found in IGSMail 78.

     Date                                                        Uncertainties
     1992      MJD        x       y      UT1-UTC  Passes  Span   x    y
UT1-UTC
                                                          hours

   AUG   1   48835.50   -891.5  4490.7               18          4.6  5.1
   AUG   2   48836.50   -873.1  4511.8               10          3.9  5.3
   AUG   3   48837.50   -840.7  4523.9               18          2.1  2.5
   AUG   4   48838.50   -817.8  4558.8               18          1.2  1.2
   AUG   5   48839.50   -800.6  4577.4               18          1.2  1.3

   AUG   6   48840.50   -778.4  4592.7               18          1.2  1.2
   AUG   7   48841.50   -761.4  4614.0               18          1.3  1.4
   AUG   8   48842.50   -749.0  4639.5               17          4.7  4.6
   AUG   9   48843.50   -725.3  4665.4                8          3.6  4.1
   AUG  10   48844.50   -707.1  4692.4               18          3.2  2.7

   AUG  11   48845.50   -683.1  4723.3               18          1.7  2.1
   AUG  12   48846.50   -666.8  4741.1               18          1.4  1.4
   AUG  13   48847.50   -646.0  4765.3               18          1.3  1.3
   AUG  14   48848.50   -624.1  4780.2               18          1.3  1.3