Engineering:MSAT
MSAT (Mobile Satellite) is a satellite-based mobile telephony service developed by the National Research Council Canada (NRC). Supported by a number of companies in the United States and Canada, MSAT hosts a number of services, including the broadcast of CDGPS signals. The MSAT satellites were built by Hughes (now owned by Boeing) with a 3 kilowatt solar array power capacity and sufficient fuel for a design life of twelve years. TMI Communications of Canada referred to its MSAT satellite as MSAT-1, while American Mobile Satellite Consortium (now Ligado Networks) referred to its MSAT as AMSC-1, with each satellite providing backup for the other.
History
- April 7, 1995 - MSAT-2 (a.k.a. AMSC-1, COSPAR 1995-019A, SATCAT 23553) launched from Cape Canaveral Air Force Station , Launch Complex 36, Pad A, aboard Atlas IIA[2]
- May 1995 - testing causes overheating and damage to one of eight hybrid matrix amplifier output ports aboard MSAT-2[3]
- April 20, 1996 - MSAT-1 (sometimes AMSC 2, COSPAR 1996-022A, SATCAT 23846) launched from Kourou, French Guiana aboard Ariane 42P[4][5]
- May 15, 1996 - Reported failures of two solid state power amplifiers (SSPAs) and one L-band receiver on separate occasions aboard MSAT-2.[3]
- May 4, 2003 - MSAT-1 loses two power amplifiers.[6]
Phaseout
MSAT-1 and MSAT-2 have had their share of problems. Mobile Satellite Ventures placed the AMSC-1 satellite into a 2.5 degree inclined orbit operations mode in November 2004, reducing station-keeping fuel usage and extending the satellite's useful life.[7]
On January 11, 2006, Mobile Satellite Ventures (MSVLP) (changed name to SkyTerra, then became by acquisition LightSquared, then after bankruptcy Ligado Networks) announced plans to launch a new generation of satellites (in a 3 satellite configuration) to replace the MSAT satellites by 2010. MSV has said that all old MSAT gear would be compatible with the new satellites.[8][9]
- MSV-1 (U.S.)
- MSV-2 (Canada)
- MSV-SA (South America)
Services Delivered via MSAT
The following services are singularly dependent upon the continued operation of the MSAT satellite:
- CDGPS - a differential correction signal system for improved GPS navigation accuracy
- Trailer Tracking - by SkyWave Mobile Communications
- Trailer Tracking - by SkyBitz
- EMERGNET - by Glentel
See also
- Mobile-satellite service
- Satellite phone
References
- ↑ "AMSC 1 / M-Sat 1". https://space.skyrocket.de/doc_sdat/amsc_msat.htm.
- ↑ "Florida Today Space and Missile Launch Database". http://www.floridatoday.com/maps/launches/LC36Launches.htm.
- ↑ 3.0 3.1 "AMERICAN MOBILE SATELLITE CORPORATION AND SUBSIDIARIES: Form 10-Q". 2006-05-14. http://yahoo.brand.edgar-online.com/fetchFilingFrameset.aspx?FilingID=503983&Type=HTML.
- ↑ "MSAT-1 TO LAUNCH APRIL 20TH". http://www.conveyor.com/space/news/can-space-5-96.html.
- ↑ "Boeing: Chronology of Launches". http://www.boeing.com/defense-space/space/bss/launch/launched2.html.
- ↑ "Service Outage - November 30, 2003". http://www.cdgps.com/e/cdgps_documents/Service%20Outage-2003-11-30.pdf.
- ↑ "MOTIENT CORP, Form S-1, Filing Date Nov 3, 2005". secdatabase.com. http://edgar.secdatabase.com/1313/121465905001601/filing-main.htm.
- ↑ "Mobile Satellite Ventures Engages Boeing To Develop Next Generation Satellites". http://www.msvlp.com/media/press-releases-view.cfm?id=84&yr=2006.
- ↑ "Company Fact Sheet: Investor/Financial". http://www.msvlp.com/investor/fact-sheet.cfm.
External links
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