Multi-functional Satellite Augmentation System (MTSAT or MSAS) is a Japanese
satellite based augmentation system (SBAS), i.e. a
satellite navigation system
A satellite or artificial satellite is an object intentionally placed into orbit in outer space. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioisoto ...
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.
MSAS provides a similar service to
Wide Area Augmentation System (WAAS) in North America,
European Geostationary Navigation Overlay Service (EGNOS) in Europe and
System for Differential Corrections and Monitoring
The System for Differential Corrections and Monitoring (SDCM), is the satellite-based navigation augmentation system operated by Russia's Roscosmos space agency to augment the precision of the GLONASS satellite navigation system. It uses the Luch ...
(SDCM) in Russia.
See also
*
Multi-Functional Transport Satellite (MTSAT)
*
Quasi-Zenith Satellite System (QZSS)
References
External links
Information on WAAS, EGNOS & MSAS
{{Satellite navigation systems
Navigation satellite constellations
Satellite-based augmentation systems