Logo IGS

OS0G

10402M004

41 Mails
Yehuda Bock 31-Jul-1992 09:13
IGSMAIL
Gerhard Beutler 28-Jul-1992 09:45
IGSMAIL
ESOC 24-Jul-1992 18:19
IGSMAIL
Yehuda Bock 20-Jul-1992 14:06
IGSMAIL
Yehuda Bock 20-Jul-1992 12:59
IGSMAIL
Geoffrey Blewitt 16-Jul-1992 10:11
IGSMAIL
Dennis McCarthy 16-Jul-1992 00:00
IGSMAIL
Yehuda Bock 07-Jul-1992 09:07
IGSMAIL
Martin Hendy 03-Jul-1992 18:09
IGSMAIL
Gerhard Beutler 01-Jul-1992 19:07
IGSMAIL
Dave Starr 30-Jun-1992 08:54
IGSMAIL
Sujet : SIO analysis results (19526)
De . Yehuda Bock - Yehuda Bock
Date : 31-Jul-1992 09:13 -
À : igsmail@igscb.jpl.nasa.gov
- DOMES : 13407S011, 40104M002, 40127M003, 40407M002, 40405S026, 40460M001, 40400M005, 40105S004, 40408M001, 92201M002, 40424M004, 21729S001, 23902S001, 50107M004, 30302M001, 10302M003, 10402M004, 10317M001, 13504M003
***********************************************************************
IGS Electronic Mail 31-JUL-1992 17:43:59 Message Number 57
***********************************************************************

==============================================================================
THIS FILE CONTAINS 3 MESSAGES
==============================================================================

>From: Andrew Sinclair
Subject: Herstmonceux Rogue
----------------------


Eccentricity vector of Herstmonceux Rogue

The UK Ordnance Survey carried out survey work at the Herstmonceux
site in September 1991, consisting of GPS and terrestrial
observations, in order to determine the eccentricity
vector of the Rogue GPS receiver relative to the SLR. The result,
for the vector from the SLR to the Rogue, was:
dx= +6.6735, dy= +10.2828, dz= -3.7461 metres.
In May 1992 it was discovered that this vector actually referred
to the L1 phase centre of the Rogue rather than the point designated
as the GPS reference marker, which is 0.27558 m below the L1 phase
centre. This information was made available in June 1992.
The list of eccentricity vectors from Boucher and Altamimi in
IGS e-mail message number 33 (1-Jul-1992) contains the corrected
vector given as
dx= +6.498, dy= +10.281, dz= -3.959 metres.

In June 1992 Ordnance Survey carried out a new survey of the site in
order to make an independent check on the vector. This survey made
only terrestrial observations, and had the advantage that direct
distance and angle observations could be made from the SLR to the
Rogue due to the removal of an obstruction which prevented these
measurements in the 1991 survey. In addition Ordnance Survey
re-reduced the 1991 observations in order to give the vector to
the correct point on the Rogue. The differences of these two
determinations of the vector are:
1.0 mm in x, 6.3 mm in y, 10.6 mm in z.
The lengths of the two vectors differ by only 1.3 mm, and hence
Ordnance Survey conclude that the main uncertainty lies in the
orientation of the vector, and recommend that the weighted mean
be taken as the best determination.

Accordingly, the recommended vector from the SLR to the Rogue,
in the WGS-84 system, is
dx= +6.5052, dy= +10.2783, dz= -3.9453 metres.

The SLR reference point is the intersection of axes;
DOMES number 13212 S001.

The GPS reference point is at a distance 0.2002 m below the bottom
of the choke ring; DOMES number 13212 M007.

The GPS receiver is a mini-Rogue SNR-8C (as from 1992 March 24).
Before then it was an SNR-8A.

Andrew Sinclair
1992 July 31


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

>From: Werner Gurtner
Subject: Zimmerwald GPS Receivers
------------------------

GPS Receivers at the Zimmerwald SLR Station
-------------------------------------------

On Day 210 a P-Code Ashtech Receiver LM-XII3 Version 6I was installed
on a second marker at the Zimmerwald SLR Observatory, in addition to
the P2 Trimble 4000SST receiver of the Federal Office of Topography.

The LM-XII3 receiver has been kindly provided by the Ashtech
Company for the (remaining part of the) IGS campaign.

The receiver has been connected to an on-site Compaq PC through the serial
ports. The receiver is powered by the station's 24 Volt protected
power supply.

The data is downloaded to the PC automatically twice a day using the batch
mode of the Ashtech REMOTE program, rinexed, and sent to the VAX station
computer, from where it is distributed through Internet connections after
having been concatenated into daily files and properly compressed.

A second receiver has been installed at the Graz SLR Observatory
by Dr. Peter Pesec in parallel with their Rogue receiver. Its site
information will be made available by Dr. Pesec.

These dual occupations (Ashtech/Trimble and Ashtech/Rogue) provide
an excellent opportunity to study mixed receiver baselines on precisely
known sites.

We will make available the data collected at Zimmerwald by the LM-XII3
to the IGS community, too.

Zimmerwald Site Information:
---------------------------

-------------------------------------------------------------------------------
Site Abbr CDP Dome SLR/ GPS -------- Local Tie ------- Ant. RCV
Name No No VLBI Mark deltaX deltaY deltaZ Height
-------------------------------------------------------------------------------
Zimmerwald ZIMA 7602 14001 S001 M002 8.448 -0.168 -3.993 0.000 P12
Zimmerwald ZIMM 7602 14001 S001 M004 13.680 6.012 -6.242 0.000 SSP
-------------------------------------------------------------------------------

Local Tie:
Vector given from SLR/VLBI Center to GPS Marker

Antenna Height:
Vertical Distance from GPS Marker to Antenna Reference Point (ARP)

-------------------------------------------------------------------------------
Receiver/Antenna Antenna Reference Point ARP RCV ARP to L1 ARP to L2
-------------------------------------------------------------------------------
Trimble SST L2 P-Code Bottom of Preamplifier SSP 0.069 0.068
Ashtech P-XII Bottom of Antenna P12 0.076 0.076
-------------------------------------------------------------------------------


******************************************************************************
Werner Gurtner, Astronomical Institute, University of Berne, Sidlerstrasse 5
CH-3012 Bern, Switzerland, Tel: ++41-31-658591 / 658599, Fax: ++41-31-653869
E-Mail: gurtner at aiub.unibe.ch SPAN: 20579::49203::gurtner
******************************************************************************


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

>From: Carey Noll
Subject: CDDIS GPS Data Holdings for IGS Week 6/GPS Week 654
---------------------------------------------------


Current IGS GPS Data Holdings (as of 31-Jul-92 08:07)
IGS Week 6/GPS Week 654 (July 19 thru July 25, 1992; Days 201 thru 207)

2 2 2 2 2 2 2
Mon. 0 0 0 0 0 0 0 No.
Site Name Name Receiver 1 2 3 4 5 6 7 Sites
------------------ ---- -------- --- --- --- --- --- --- --- -----
Albert Head ALBH ROGUE X X X X X X X 7
Algonquin ALGO ROGUE X X X X X X X 7
Brasilia BRAS TRIMBLE - - - - - - X 1
Fairbanks FAIR ROGUE X X X X X X X 7
Goldstone GOLD ROGUE X X X X X X X 7
Graz GRAZ ROGUE X X X X X X X 7
Hartebeesthoek HART ROGUE X X X X X X X 7
Herstmonceux HERS ROGUE X X X X X X X 7
Hobart HOBA MINIMAC X X X X X X X 7
Kokee Park KOKB ROGUE X X X X X X X 7
Kootwijk KOSG ROGUE X X X X X X X 7
Madrid MADR ROGUE X X X X X X x 7
Mas Palomas MASP ROGUE X X X X X X X 7
Matera MATE ROGUE X X X X X X X 7
McMurdo MCMU ROGUE X X X X X X - 6
Metsahovi METS ROGUE X X X X X X X 7
Mojave MOJ1 MINIMAC - X X X X X X 6
Ny Alesund NYAL ROGUE X X X X X X X 7
Onsala ONSA ROGUE X X X X X X X 7
Pamate PAMA ROGUE X X X X X X X 7
Parana PARA TRIMBLE - - - - - - X 1
Pasadena JPLM ROGUE X X X X X X X 7
Penticton DRAO ROGUE X X X X X X X 7
Pinyon Flat PINY ROGUE X X X X X X X 7
Richmond RCMA MINIMAC X X X X X X X 7
Richmond RCM2 ROGUE - - - X X X X 4
Saint John's STJO ROGUE X X X X X X X 7
Santiago SANT ROGUE X X X X X X X 7
Taiwan TAIW ROGUE X X X X X X X 7
Tidbinbilla TIDB ROGUE X X - - X X X 5
Townsville TOWN TRIMBLE X X X X X X X 7
Tromso TROM ROGUE X X X X X X X 7
Tsukuba TSUK MINIMAC X X X X X X X 7
Usuda USUD ROGUE - X X X - X - 4
Wellington WELL TRIMBLE X X X X X X X 7
Westford WES1 MINIMAC X X X X X X X 7
Wettzell WETT ROGUE X X X X X X X 7
Yaragadee YAR1 ROGUE X X X X X X X 7
Yellowknife YELL ROGUE X X X X X X X 7
Zimmerwald ZIMM TRIMBLE X X X X X X X 7
------------------ ---- -------- --- --- --- --- --- --- --- -----
Totals: 40 stations 35 37 36 37 37 38 38 258

Notes: CDDIS disk archive status:

GPS1:[GPSDATA] directory contains days 206 and on
GPS2:[GPSDATA] directory contains days 187 thru 205
GPS3:[PRODUCTS] directory contains IGS products

Data from new Rogue receiver at Richmond (RCM2) has arrived for day 200
and beyond.

Data from Brasilia (BRAS) and Parana, Brazil have arrived from the
Instituto Nacional de Pesquisas Espaciais (INPE), Brazil in support
of Epoch '92. These data will reside with the core data on optical
disk.

Data from Kitab, Uzbekistan has begun to arrive at CDDIS via the
GFZ. Data from day 193 has been delivered.