Multi-functional Satellite Augmentation System
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Multi-functional Satellite Augmentation System

Multi-functional Satellite Augmentation System (MTSAT or MSAS)[1] is a Japanese satellite based augmentation system (SBAS), i.e. a satellite navigation system which supports differential GPS (DGPS) to supplement the GPS system by reporting (then improving) on the reliability and accuracy of those signals. MSAS is operated by Japan's Ministry of Land, Infrastructure and Transport and Civil Aviation Bureau (JCAB). Tests have been accomplished successfully, MSAS for aviation use was commissioned on 27 September 2007.

The use of SBASs, such as MSAS, enables an individual GPS receiver to correct its own position, offering a much greater accuracy. Typically GPS signal accuracy is improved from some 20 meters to approximately 1.5-2 meters in both the horizontal and vertical dimensions.[2]

Satellite Name & Details NMEA / PRN Location Launched
MTSAT-1R (Himawari 6)[3] NMEA #42 / PRN #129 140°E 26 February 2005
MTSAT-2 (Himawari 7)[4] NMEA #50 / PRN #137 145°E 18 February 2006

MSAS provides a similar service to Wide Area Augmentation System (WAAS) in North America, and European Geostationary Navigation Overlay Service (EGNOS) in Europe.

See also


  1. ^ "Archived copy" (PDF). Archived from the original (PDF) on 2015-11-06. Retrieved .CS1 maint: archived copy as title (link)
  2. ^ "Wide Area Augmentation System". Archived from the original on June 12, 2007.
  3. ^ "NASA - NSSDCA - Spacecraft - Details".
  4. ^ "NASA - NSSDCA - Spacecraft - Details".

External links

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



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