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#3321
Tue 25 Nov 2003 11:16:AM
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Joined: Feb 2001
Posts: 3,536
Mission Commander
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OP
Mission Commander
Joined: Feb 2001
Posts: 3,536 |
WEATHER SATELLITES<br /> ================<br /> APT STATUS REPORT -- 24th November 2003<br /> =================================<br /><br /> Satellite Frequency (MHz) Status Image Quality<br /><br /> NOAA 12 137.500 off<br /> NOAA 14 137.620 off<br /> NOAA 15 137.500 on good<br /> NOAA 17 137.620 on good<br /><br /><br />CHANGES SINCE LAST REPORT.<br />Update to Sich 1M launch.<br /><br />THIS WEEK'S POSSIBLE EVENTS.<br />None expected.<br /><br />NOTES.<br /><br />1. NOAA 9 was permanently deactivated some years ago and is tumbling<br />freely. Unfortunately it has a sporadic carrier on 137.500 (varies quickly<br />according to orientation) and can cause interference to NOAA 12 and<br />NOAA 15.<br /><br />2. NOAA 16's APT transmission system failed a few months after launch.<br /><br />3. There is a VHF conflict between NOAA 12 and 15 (137.500 MHz). NOAA<br />12's APT has been switched off and is expected back on about 7th December.<br /><br /><br />LAUNCHES.<br />Sich-1M launch has slipped to mid 2004.<br />The next known satellite launch with APT is NOAA N scheduled for 18th<br />September 2004.<br /><br />Douglas Deans.<br />Dunblane, Scotland.<br /><br /><br /> DIGITAL STATUS REPORT -- 24th November 2003<br /> ====================================<br /><br />CHANGES SINCE LAST REPORT.<br />None.<br /><br />THIS WEEK'S EVENTS.<br />None expected.<br /><br /> Satellite Frequency Mode Remarks<br /> (MHz)<br />NOAA 12 1698.0 HRPT Good signal<br />NOAA 14 1707.0 HRPT Good signal (see note 5)<br />NOAA 15 1702.5 HRPT* Backup channel, weaker signal<br />NOAA 16 1698.0 HRPT* Good signal (see note 7)<br />NOAA 17 1707.0 HRPT* See note 6.<br />FengYun 1C 1700.4 CHRPT Weak signal, use dish 90cm.<br />FengYun 1D 1700.4 CHRPT Good signal.<br />Seastar 1702.5 SeaWifs signal OK<br /> encrypted<br /><br /><br />NOTES.<br /><br />1. At the NOAA 17 frequency of 1707 MHz occasional interference may be<br />expected from NOAA 14 at latitudes above 80 degrees. Erratic behaviour of<br />the inactive NOAA 9 also has proven to be a source of interference at higher<br />latitudes. NOAA 9 follows a similar track to 17. Recent reports suggest<br />that this erratic behaviour is no longer being seen. My thanks to F. Valk<br />for keeping us up to date with this problem.<br /><br />2. If you have a good LNA and analogue decoder (Timestep for example)<br />all sat's with "Good signal" or better can already be received using<br />a 1.5M helicalbeam (RIG Journal 64) or a small dish (60 to 80cm) with<br />helical feed.<br /><br />3. * These sat's have channel 3A/B which allows the composition of<br /> almost true-colour images of daylight passes using R3G2B1<br /> colour scheme. For more info on colouring see RIG Journal 69.<br /><br />4. ~ 10 Channel imager, use colour scheme R1G9B7 or R1G2B7 for<br /> daylight passes to get near true colour images.<br /><br />5. Sadly the improvement in NOAA 14's AVHRR scan motor performance has not<br />been maintained. Reports are again mixed.<br /><br />6. Problems have developed with STX-3 (1707 MHZ). Power has dropped from<br /> approx. 8W to about 2.4W resulting on a greatly reduced signal strength.<br /><br />7. On Friday 19th September NOAA 16 developed AVHRR synch. problems similar<br /> to those on NOAA 14 (and previously NOAA 15).<br /> Following a number of 'adjustments' by NOAA to remedy the problem,<br /> reports of good images have been received for many weeks.<br /><br />Arne van Belle, WERKGROEP KUNSTMANEN<br />Co-ordinator Radio Observers ( www.kunstmanen.nl)<br /><br />Douglas Deans.....with thanks to Lawrence Harris for his regular updates.<br /><br /><br /> CONTINENTAL GEOSTATIONARY WORLD WEATHER<br /> =========================================<br /> SATELLITE STATUS -- 24th November 2003<br /> ================================<br /><br />CHANGES SINCE LAST REPORT.<br />None.<br /><br />Europe & Africa<br />------------------<br /><br />Satellite : Meteosat 7 (0°)<br />Data : HRI (digital) - 1694.5 MHz<br /> Wefax (analogue) - 1691 & 1694.5 MHz<br />Operational : Present --- end 2005 (Note 1).<br /><br />Satellite : MSG-1 (10° W)<br />Data : HRIT (digital) and LRIT (digital)<br />Operational : From January 2004 (Note 2).<br />Satellite operational overlap from January 2004 ---- end 2005.<br /><br />Satellite : Meteosat 6 (10°E) (Note 4)<br />Data : HRI (digital) - 1691 MHz (Occasional wefax for ranging)<br />Operational : Standby for Meteosat 7 and Europe RSS.<br /><br /><br />North America<br />----------------<br />East.<br /><br />Satellite : GOES 12 (75.1° W) (note 8.)<br />Data : GVAR (digital) - 1685.7 MHz<br /> Wefax (analogue)/LRIT (digital) time shared - 1691MHz<br />Operational : Present .......<br /><br />West.<br /><br />Satellite : GOES 10 (135° W)<br />Data : GVAR (digital) - 1685.7 MHz<br /> Wefax (analogue) - 1691 MHz<br />Operational : Present ---- Sometime in 2004<br /><br />Satellite : GOES 11 (in storage)<br />Data : GVAR (digital) and LRIT (digital)<br />Operational : Sometime during 2004<br />Satellite operational overlap ---- to be confirmed.<br /><br /><br />Asia (Russian Operated Satellite)<br />--------------------------------------<br /><br />Satellite : GOMS / Electro 2<br />Data : Not yet specified (HRIT/LRIT likely)<br />Operational : To be launched late 2005.<br /><br />Asia (European Operated Satellite)<br />----------------------------------------<br /><br />Satellite : Meteosat 5 (63°E) (Note 3)<br />Data : HRI (digital) - 1691 MHz<br /> Wefax (analogue) -1691 MHz (from time to time)<br />Operational : Present....end of 2005<br /><br />Asia (Indian Operated Satellite)<br />-----------------------------------<br />Satellite : Metsat<br />Data : None available.<br />Operational : Present....<br /><br />Satellite : Insat 3A (Note 5.)<br />Data : VHRR (digital) 2599 MHz<br />Operational : Present ............<br /><br /><br />Asia & Oceania (Japanese Operated Satellites)<br />-----------------------------------------------------<br /><br />Satellite : GMS-5 (140° E) (Note 6)<br />Data : Wefax Relay only - 1691MHz (120kHz deviation)<br />Operational : Present ---- late 2004<br /><br />Satellite : GOES 9 (204.2°W)<br />Data : GVAR (digital) - 1685.7 MHz<br />Operational : Present ....... late 2004<br /><br />Satellite : MTSAT-1R<br />Data : HiRID (digital) and Wefax(analogue)/LRIT(digital)<br /> shared.<br />Operational : To be launched early 2004.(some now reporting mid 2004)<br />Satellite operational overlap ---- not yet applicable.<br /><br /><br />Asia & Oceania (Chinese Operated Satellites)<br />----------------------------------------------------<br /><br />Satellite : Feng Yun 2B (105°E)<br />Data : SVISSR (digital) - 1687.5 MHz<br />Operational : Present ......<br /><br />Satellite : Feng Yun 2C<br />Data : SVISSR (digital) and LRIT (digital)<br />Operational : To be launched early 2004<br />Satellite operational overlap ---- not yet applicable.<br /><br /><br /> NOTES.<br /><br />1. If necessary the satellite may operate beyond this date.<br /><br />2. HRIT & LRIT data will not be disseminated through the satellite but will<br />be provided via Hotbird satellite in DVB mode. See the Eumetcast status<br />report for more information.<br /><br />3. Meteosat 5 now operates with only one channel.<br /><br />4. Meteosat 6 is the standby satellite for Meteosat 7. Whilst in standby is<br />being used to provide a 10 minute rapid scan service of Europe on HRI.<br /><br />5. Insat 3A is a combined data and meteorological satellite.<br /><br />6. GMS-5 ceased VISSR transmissions on 22nd May 2003. Wefax is now<br /> derived from GOES-9 (155° E) GVAR and processed to a 140° aspect<br /> through GMS-5. For further information see :-<br /> http://www.jma.go.jp/JMA_HP/jma/indexe.html<br /><br />7. For those interested in EMWIN data, the following sats/frequencies apply.<br /><br /> GOES7 (175 W) 1690.725 MHz.<br /> GOES 10 (135 W) 1690.725 MHz<br /> GOES 12 (74.5 W) 1690.725 MHz<br /> For further info. there are many sources but the following is<br /> particularly informative:-<br /> http://iwin.nws.noaa.gov/emwin/user-intro.htm<br /><br />8. Currently Wefax alignment problems make animation difficult. It is hoped<br /> this problem will be resolved soon.<br /><br />9. LRIT is now operational in time share mode from GOES East. For further<br /> information go to :<br /> http://noaasis.noaa.gov/LRIT/<br /><br />For updates/additions or errors (in this section) reply to<br />Dave Cawley Information@Time-step.com<br /><br /><br /> EUMETCAST STATUS REPORT -- 24th November 2003<br /> ========================================<br /><br /> Service Status Hotbird Satellite (13° E)<br /><br /> EARS On Transponder 129: 11096 MHz<br /> RSS On Transponder 129: 11096 MHz<br /> MSG On (Trial) Transponder 129: 11096 MHz<br /><br />CHANGES SINCE LAST REPORT<br />None.<br /><br />THIS WEEK'S POSSIBLE EVENTS.<br />MSG-1 : IODC data (from Meteosat 5) to be added to the FSD as from<br />25th November.<br /><br />My thanks to David Taylor for his help with reports.<br />Any reports for this section should be sent to :-<br />Douglas Deans douglas@dsdeans.freeserve.co.uk<br /><br />NOTES.<br /><br />1. For further information on the Eumetcast service see :-<br /> David Taylor's web site<br /> http://www.satsignal.net => Weather Satellites, ATOVS or<br /> MSG Data Manager.<br />or Eumetsat's web site<br /> www.eumetsat.de
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