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The MTSAT Satellite Augmentation System ([[MSAS General Introduction|MSAS]]) is the Japanese [[SBAS General Introduction|Satellite Based Augmentation System (SBAS)]] System:<ref name="MSAS_STATUS_2007">[http://www.unoosa.org/ MSAS Current Status, Japan Civil Aviation Bureau,] [http://www.oosa.unvienna.org/oosa/SAP/gnss/icg/icg02/presentations.html Second Meeting of the International Committee on Global Navigation Satellite Systems (ICG) organized by the International Space Research Organization,  Bangalore, India , 5 - 7 September 2007]</ref> a GPS Augmentation system with the goal of improving its accuracy, integrity, and availability.
First tests were accomplished successfully, and MSAS system for aviation use was declared operational in September 27, 2007,<ref name="MSAS_STATUS_2007_2">QZSS / MSAS Status, CGSIC –47th Meeting ,Fort Worth, Texas September25, 2007, Satoshi KOGURE, [http://www.jaxa.jp/index_e.html Japan Aerospace Exploration Agency,] QZSS Project Team</ref><ref name="MSAS_GPSW">[http://www.gpsworld.com/surveyperspectives-late-april-2008-7289 Eric Gakstatter, Perspectives - Late April 2008, GPSworld, April 15, 2008]</ref><ref name=MSAS_WIKI_2>[http://en.wikipedia.org/wiki/Multi-functional_Satellite_Augmentation_System Multi-functional Satellite Augmentation System] in [http://en.wikipedia.org/ Wikipedia]</ref> providing a service of horizontal guidance for En-route through Non-Precision Approach.<ref name="MSAS_STATUS_2007"/><ref name="MSAS_STATUS_2007_2"/><ref name="MSAS_STATUS_2008">[http://www.unoosa.org/ Overview of MSAS, Presentation for ICG-3, 2008]</ref>
The SBAS signal used to be transmitted from MTSAT (Multi-functional Transport Satellites) operated by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT). The SBAS signal that is made by MLIT is now transmitted from the QZS-3 GEO satellite using the QZSS SBAS transmission service since April 2020.<ref name="QZSS_SBAS">[https://qzss.go.jp/en/overview/services/sv12_sbas.html SBAS Transmission Service], QZSS Official Website</ref>


The Multi-functional Satellite Augmentation System (MSAS) is the Japanese [[SBAS General Introduction|SBAS]] System: a GPS Augmentation system with the goal of improving its accuracy, integrity, and availability, and that uses the Multifunctional Transport Satellites (MTSAT)  owned and operated by the [http://www.mlit.go.jp Japanese Ministry of Land, Infrastructure and Transport] and the [http://www.jma.go.jp Japan Meteorological Agency (JMA)].
==MSAS Related Articles==
MSAS is intended to enable aircraft to rely on GPS for all phases of flight, including precision approaches to any airport within its coverage area. Tests had been accomplished successfully, MSAS for aviation use was commissioned on September 27, 2007.


==WAAS Related Articles==
The following articles include further information about different important topics related to a MSAS:


The following articles include further information about different important topics related to a MSAS:
*[[MSAS Architecture|MSAS Architecture]]:
**[[MSAS Space Segment|MSAS Space Segment]];
**[[MSAS Ground Segment|MSAS Ground Segment]];
**[[MSAS User Segment|MSAS User Segment]].
*[[MSAS Performances|MSAS Performances]].
*[[MSAS Signal Structure|MSAS Signal Structure]].
 
==MSAS Versions==
The following table shows a brief description of the system's configuration for each operational step <ref name="ICAO">[https://www.icao.int/Meetings/anconf13/Documents/WP/wp_249_en.pdf MSAS STATUS AND FUTURE PLAN] ICAO, THIRTEENTH AIR NAVIGATION CONFERENCE, Montréal, Canada, 9 to 19 October 2018 </ref>:
{| class="wikitable"
|-
! MSAS Version
! Topics
|-
| MSAS V1:<br />Initial Performance Phase<br />(2007 - 2020)
| Operation with MTSAT, 2 Master Control Station (MCS) and 6 Ground Monitor Stations (GMS) by 2020.
|-
| MSAS V2:<br />System Update Phase<br />(2020 - 2023)
| Operational takeover to GEO QZS-3.<br />Full replacement of SBAS ground system.<br />2 MCS, 13 GMS and 3 Uplink Station in domestic.<br />Performance equal or higher than MSAS V1.
|-
| MSAS V3:<br />LPV Performance Phase<br />(2023 - )
| Vertical guidance: LPV operation by two or more GEOs.<br />Need development of high performance IONO software for low latitude magnetic equatorial region based on the research outcome from ENRI.
|-
| MSAS V4:<br />DFMC Validation Phase<br />(2017 - )
| In support of ICAO SARPs validation activity, the initial performance starts with LPV 200.<br />ENRI has started DFMC SBAS experiment in 2017 with QZS2.<br />QZS3 and QZS4 will be used for DFMC SBAS validation.
|}


*[[Work in Progress:MSAS Arquictecture|MSAS Arquictecture]]:
**[[Work in Progress:MSAS Space Segment|MSAS Space Segment]].
**[[Work in Progress:MSAS Ground Segment|MSAS Ground Segment]].
**[[Work in Progress:MSAS User Segment|MSAS User Segment]].
*[[Work in Progress:MSAS Performances|MSAS Performances]].
*[[Work in Progress:MSAS Signal Structure|MSAS Signal Structure]].


==Notes==
<references group="footnotes"/>
==References==
==References==
<references/>
<references/>


[[Category:MSAS]]
[[Category:MSAS|!]]

Latest revision as of 06:39, 30 September 2021


MSASMSAS
Title MSAS General Introduction
Edited by GMV
Level Basic
Year of Publication 2011
Logo GMV.png

The MTSAT Satellite Augmentation System (MSAS) is the Japanese Satellite Based Augmentation System (SBAS) System:[1] a GPS Augmentation system with the goal of improving its accuracy, integrity, and availability. First tests were accomplished successfully, and MSAS system for aviation use was declared operational in September 27, 2007,[2][3][4] providing a service of horizontal guidance for En-route through Non-Precision Approach.[1][2][5] The SBAS signal used to be transmitted from MTSAT (Multi-functional Transport Satellites) operated by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT). The SBAS signal that is made by MLIT is now transmitted from the QZS-3 GEO satellite using the QZSS SBAS transmission service since April 2020.[6]

MSAS Related Articles

The following articles include further information about different important topics related to a MSAS:

MSAS Versions

The following table shows a brief description of the system's configuration for each operational step [7]:

MSAS Version Topics
MSAS V1:
Initial Performance Phase
(2007 - 2020) 		Operation with MTSAT, 2 Master Control Station (MCS) and 6 Ground Monitor Stations (GMS) by 2020.
MSAS V2:
System Update Phase
(2020 - 2023) 		Operational takeover to GEO QZS-3.
Full replacement of SBAS ground system.
2 MCS, 13 GMS and 3 Uplink Station in domestic.
Performance equal or higher than MSAS V1.
MSAS V3:
LPV Performance Phase
(2023 - ) 		Vertical guidance: LPV operation by two or more GEOs.
Need development of high performance IONO software for low latitude magnetic equatorial region based on the research outcome from ENRI.
MSAS V4:
DFMC Validation Phase
(2017 - ) 		In support of ICAO SARPs validation activity, the initial performance starts with LPV 200.
ENRI has started DFMC SBAS experiment in 2017 with QZS2.
QZS3 and QZS4 will be used for DFMC SBAS validation.


References

  1. ^ a b MSAS Current Status, Japan Civil Aviation Bureau, Second Meeting of the International Committee on Global Navigation Satellite Systems (ICG) organized by the International Space Research Organization, Bangalore, India , 5 - 7 September 2007
  2. ^ a b QZSS / MSAS Status, CGSIC –47th Meeting ,Fort Worth, Texas September25, 2007, Satoshi KOGURE, Japan Aerospace Exploration Agency, QZSS Project Team
  3. ^ Eric Gakstatter, Perspectives - Late April 2008, GPSworld, April 15, 2008
  4. ^ Multi-functional Satellite Augmentation System in Wikipedia
  5. ^ Overview of MSAS, Presentation for ICG-3, 2008
  6. ^ SBAS Transmission Service, QZSS Official Website
  7. ^ MSAS STATUS AND FUTURE PLAN ICAO, THIRTEENTH AIR NAVIGATION CONFERENCE, Montréal, Canada, 9 to 19 October 2018
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