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G4ROA > WXSAT 20.03.06 09:45l 364 Lines 11477 Bytes #999 (0) @ WW
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Subj: WX Sat Status 20/3
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To : WXSAT@WW
WEATHER SATELLITES
================
APT, DIGITAL and GEOSTATIONARY WEEKLY STATUS.
==========================================
Author : Douglas S Deans. dsdeans@tiscali.co.uk
Section 4 has updates.
SECTION 1: POLAR APT REPORT -- 20th March 2006
=======================================
Satellite Frequency (MHz) Status Image Quality
NOAA 12 137.500 on good
NOAA 14 137.620 off n/a
NOAA 15 137.500 off see note 5.
NOAA 17 137.620 on good
NOAA 18 137.100 on good
CHANGES SINCE LAST REPORT.
None.
THIS WEEK'S POSSIBLE EVENTS.
None expected.
NOTES.
1. NOAA 9 was permanently deactivated some years ago and is tumbling
freely. Unfortunately it has a sporadic carrier on 137.500 (varies
quickly according to orientation) and can cause interference to NOAA
12
and NOAA 15.
2. Tiros-N and NOAA 6 are putting a carrier out on 137.500 and will
interfere with NOAA 12 and 15 when their footprints overlap.
3. NOAA 16's APT transmission system failed a few months after launch.
4. NOAA 18's APT frequency was changed as planned on 4th January 2006 at
09.03 UTC. The change was from VTX-2 (137.9125 MHz) to VTX-1 (137.100
MHz).
5. There is a NOAA 12/15 VHF (137.500) conflict which commenced 1st
March 2006. NOAA 15 VTX-1 is off until the 2nd April 2006.
6. Elements are available from :-
http://www.space-track.org and
http://celestrak.com/NORAD/elements/
LAUNCHES.
NOAA N' launch.....2008.
Douglas Deans.
Dunblane, Scotland.
SECTION 2: POLAR DIGITAL REPORT -- 20th March 2006
==========================================
CHANGES SINCE LAST REPORT.
None.
THIS WEEK'S POSSIBLE EVENTS.
None expected.
Satellite Frequency Antenna Mode Image Quality
(MHz)
NOAA 12 1698.0 RHCP HRPT Good
NOAA 14 1707.0 RHCP HRPT Mixed ( note 1)
NOAA 15 1702.5 Omni HRPT Weak
NOAA 16 1702.5 LHCP HRPT Mixed ( note 3)
NOAA 17 1707.0 RHCP HRPT Poor (note 2)
NOAA 18 1698.0 RHCP HRPT Good
Feng Yun 1C 1700.4 RHCP CHRPT No data (note 4)
Feng Yun 1D 1700.4 RHCP CHRPT Good
NOTES.
1. On 14th April 2004 NOAA 14's AVHRR scan motor stalled. It was
assumed
that it would be unlikely to work again.
However on the 16th July 2005 it unexpectedly sprung to life with
nominal currents and more importantly nominal synch delta values.
Good
imagery was once again being reported.
UPDATE: Scan motor performance has been much better for the past few
months with good imagery.
2. Problems have developed with STX-3 (1707 MHZ). Power has dropped from
approx. 8W to about 2.4W resulting on a greatly reduced signal
strength.
3. On Friday 19th September 2003 NOAA 16 developed AVHRR synch. problems
similar to those on NOAA 14 (and previously NOAA 15).
Since then reports have been mixed. Some periods of good data, some
poor.
4. Although all channels are being transmitted on Feng Yun 1C, there is no
image data, so the channels are effectively empty.
5. The following HRPT transmitter changes were effective from
30th August 2005. The re-assignments were :-
NOAA 16 changed from STX1 (1698 MHz) to STX2 (1702.5 MHz).
NOAA 18 changed from STX3 (1707 MHz) to STX1 (1698 MHz).
LAUNCHES.
Metop-2 (Metop-A after launch).......June 2006.
Douglas Deans.....with thanks to Lawrence Harris for his regular updates
and
reports.
SECTION 3: CONTINENTAL GEOSTATIONARY WORLD
===========================================
WEATHER SATELLITE REPORT -- 20th March 2006
=====================================
CHANGES SINCE LAST REPORT.
Meteosat 7 note updated.
THIS WEEK'S POSSIBLE EVENTS.
None.
Europe & Africa
------------------
Satellite : Meteosat 7 (0°)
Data : HRI (digital) - 1694.5 MHz
Wefax (analogue) - 1691 & 1694.5 MHz
Operational : Present --- end June 2006 (Note 1).
Note : In 2006 users may begin to experience difficulties in the direct
reception of Meteosat-7 services. For more information see:
http://www.eumetsat.int/idcplg?IdcService=SS_GET_PAGE&ssDocName=SP_11193641
76966&l=en&ssTargetNodeId=511
Due to Meteosat-7 eclipse season between 20/02/06 and 06/04/06 slots 47 To
03 may not be available.
Satellite : Meteosat 8 (3° W)
Data : HRIT (digital) and LRIT (digital)
Operational : Since February 2004 (Note 2).
Satellite operational overlap : present until June 2006.
Satellite : Meteosat 6 (10°E) (Note 4)
Data : HRI (digital) - 1691 MHz (Occasional wefax for ranging)
Operational : Europe RSS. Service finishes end 2006.
Satellite : MSG-2 (6.5° W). (Meteosat 9 when operational)
Data : HRIT (digital) and LRIT (digital)
Operational : No. Being commissioned.
North America
----------------
East.
Satellite : GOES 12 (75.1° W) (note 7.)
Data : GVAR (digital) - 1685.7 MHz
LRIT (digital) -1691 MHz
Operational : Present .......
West.
Satellite : GOES 10 (135° W)
Data : GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational : Present ---- Sometime in 2006
Satellite : GOES 11 (in storage)
Data : GVAR (digital) and LRIT (digital)
Operational : Sometime during 2006
Satellite operational overlap ---- to be confirmed.
Asia (Russian Operated Satellite)
--------------------------------------
Satellite : GOMS / Electro 2
Data : Not yet specified (HRIT/LRIT likely)
Operational : To be launched 2006.
Asia (European Operated Satellite)
----------------------------------------
Satellite : Meteosat 5 (63°E) (Note 3)
Data : HRI (digital) - 1691 MHz
Wefax (analogue) -1691 MHz (from time to time)
Operational : Present....September 2006
Note : Due to Meteosat-5 eclipse season between 02/02/06 and 25/03/06
slots
39 to 42 may not be available.
Asia (Indian Operated Satellite)
-----------------------------------
Satellite : Metsat
Data : None available.
Operational : Present....
Satellite : Insat 3A (Note 5.)
Data : VHRR (digital) 2599 MHz
Operational : Present ............
Asia & Oceania (Japanese Operated Satellites)
-----------------------------------------------------
Satellite : MTSAT-1R (140° E) (note 9.)
Data : HiRID and HRIT (digital) and
Wefax(analogue)/LRIT(digital) shared on 1691 MHz.
Operational : Present......
Asia & Oceania (Chinese Operated Satellites)
----------------------------------------------------
Satellite : Feng Yun 2C (105°E)
Data : SVISSR (digital) and LRIT (digital)
Operational : Present.............
NOTES.
1. If necessary the satellite may operate beyond this date.
2. HRIT & LRIT data will not be disseminated through the satellite but
will
be provided via Hotbird satellite in DVB mode. See the Eumetcast status
report for more information.
3. Meteosat 5 now operates with only one channel.
4. Meteosat 6 is providing a 10 minute rapid scan service of Europe on
HRI.
5. Insat 3A is a combined data and meteorological satellite.
6. For those interested in EMWIN data, the following sats/frequencies
apply.
GOES 7 (175 W) 1690.725 MHz.
GOES 10 (135 W) 1690.725 MHz
GOES 12 (74.5 W) 1690.725 MHz
For further info. there are many sources but the following is
particularly informative:-
http://iwin.nws.noaa.gov/emwin/user-intro.htm
7. Full LRIT (no WEFAX) on GOES East commenced 01 March 2005 and
Full LRIT on GOES West scheduled for 01 October 2005.
For further information go to :-
http://noaasis.noaa.gov/LRIT/
8. MSG-1 became operational on 29th January 2004, and is now known as
Meteosat 8.
9. This satellite is also known as HIMAWARI 6.
LAUNCHES
GOES N launch TBD.
For updates/additions or errors (in this section) reply to
Dave Cawley Information@Time-step.com
or Douglas Deans.
SECTION 4: EUMETCAST REPORT -- 20th March 2006
========================================
Service Status Hotbird Satellite (13° E)
EARS On Transponder 117: 10853.44 MHz
RSS On Transponder 117: 10853.44 MHz
Meteosat 8 On Transponder 117: 10853.44 MHz
DWDSAT On Transponder 117: 10853.44 MHz
(requires subscription)
CHANGES SINCE LAST REPORT.
Meteosat 5 Note updated.
Meteosat 8 Note added.
THIS WEEK'S POSSIBLE EVENTS.
Meteosat 5.
Due to Meteosat-5 eclipse season between 02/02/06 and 25/03/06 slots 39 to
42 may not be available.
Due to a Meteosat-5 East-West station keeping manoeuvre on 21/03/06 at
23:58
UTC, users may observe degraded image quality for up to 6 hours after the
manoeuvre.
Meteosat 6.
Due to Meteosat-6 eclipse season between 11/02/06 and 30/03/06 slots 46 To
01 may not be available.
Meteosat 7.
Due to Meteosat-7 eclipse season between 20/02/06 and 06/04/06 slots 47 To
03 may not be available.
Meteosat 8.
Due to the co-alignment of the two sun sensor slits on Meteosat-8, there
is
a possibility of degraded image quality between 17:00 UTC on 19/03/05 and
07:00 UTC on 20/03/06.
The following services may be affected:
0 deg SEVIRI High Rate Meteosat-8
0 deg SEVIRI Low Rate Meteosat-8
0 deg Meteorological Products Meteosat-8
Due to ground segment maintenance, there is an increased risk of
interruption to SEVIRI and MPEF services
between 08:00 and 12:00 UTC on 20/3/06.
FSD.
Foreign Satellite Data availability during eclipse season:
Due to GOES-E (GOES12_75W) eclipse from 12/02/06 to 28/04/06: no image at
06:00 UTC.
Due to GOES-W (GOES10_135W) eclipse from 13/02 to 29/04/06: no image at
09:00 UTC.
Due to GMS (MTSAT-1R_140E) eclipse from 11/02 to 26/04/06: no image at
15:00
UTC.
During MTSAT-1R (140E) eclipse 14:00 UTC images are planned as backup.
My thanks to David Taylor for his help with reports.
Any reports for this section should be sent to :-
Douglas Deans dsdeans@tiscali.co.uk
NOTES.
1. For further information on the Eumetcast service see :-
David Taylor's web site
http://www.satsignal.net => Weather Satellites, ATOVS or
MSG Data Manager.
or the Eumetsat web site
www.eumetsat.int
GENERAL
=======
To download element sets for all satellites visit the following sites :
http://www.space-track.org and
http://celestrak.com/NORAD/elements/
===================================
73's - Adrian, G4ROA @ GB7COV
Message timed: 06:33 on 20 Mar 2006
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