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OmniSTAR is a satellite based augmentation system (SBAS) service provider. OmniSTAR correction signals are proprietary, and a subscription must be bought from the OmniSTAR corporation to receive a subscription authorization.〔(【引用サイトリンク】title=Omnistar Services )〕 OmniSTAR uses geostationary satellites in 8 regions covering most of the landmass of each inhabited continent on Earth: # MSV-E, MSV-C, MSV-W (North America) # AMSAT (Central and South America and the Caribbean) # AORWH (Atlantic Ocean East Coast) # AOREH (Atlantic Ocean Europe/Africa) # EUSAT (Europe and Africa) # IORHN (Indian Ocean Region) # APSAT (Asia, Australasia, Western Pacific, Eastern Africa, Southern Africa) # OCSAT (Australia, New Zealand)〔(【引用サイトリンク】title=Omnistar Coverage )〕〔(【引用サイトリンク】title=Omnistar Satellites )〕 MSV service is provided by the MSAT AMSC-1 and MSAT-M1 satellites, operated by a company called Mobile Satellite Ventures. To access the OmniSTAR solution the user must have an OmniSTAR capable receiver. OmniSTAR capable receivers are available from a number of GPS manufacturers such as Autofarm, Geneq, Hemisphere GPS, NovAtel, Topcon, Trimble, Raven, etc. The OmniSTAR service options include both single frequency (L1 only) code phase DGPS solutions and dual frequency (L1/L2) carrier phase solutions. Accuracy depends on satellite geometry, local conditions, receiver capability and other variables, but typically the L1 only solution (VBS - Virtual Base Station) yields horizontal accuracy of < +/1 meter >95% of the time and the L1/L2 solutions (OmniSTAR HP, OmniSTAR XP or HP/XP combined) provide horizontal accuracies of < +/- 15cms > 95% XP makes use of precise orbit and clock corrections of the GPS Satellites. The data is bought from Nasa JPL G2 uses Orbit and Clocks calculated from Omnistar's own network of reference stations. Motorola has an optical headend product line that once owned the Omnistar name. It continues to lead the industry with the next generation Omnistar GX2 platform ==References== 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「OmniSTAR」の詳細全文を読む スポンサード リンク
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