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SDCM
| Other SBAS | |
|---|---|
| Title | SDCM |
| Author(s) | GMV |
| Level | Basic |
| Year of Publication | 2011 |
The System for Differential Corrections and Monitoring (SDCM) is the SBAS currently being developed in the Russian Federation[1][2] as a component of GLONASS.[3]
The main differentiator of SDCM with respect to other SBAS systems is that it is conceived as an SBAS augmentation that would perform integrity monitoring of both GPS and GLONASS satellites, whereas the rest of current SBAS initiatives provide corrections and integrity just to GPS satellites.
SDCM Ground Segment
The main components of the SDCM Ground Segment are a network of reference stations, central processing facilities, uplink stations and terrestrial broadcast means.
The SDCN network of reference stations will be composed of 19 stations in the Russian Federation and from 6 to 8 stations abroad.[3]
The stations in the Russian Federation are located as follows:[3]
- Leningrad region (Pulkovo and Svetloe)
- Moscow region (CDCM, Mendeleevo)
- Krasnodar territory (Gelendzhik)
- Stavropol territory (Kislovodsk)
- Krasnoyarsk Territory (Krasnoyarsk and Norilsk)
- Novosibirsk
- Irkutsk
- Petropavlovsk-Kamchatski
- Chukotka Autonomous District (Bilibino)
- Republic of Sakha (Tiksi)
- Vladivostok
- Magadan
- Yuzhno-Sakhalinsk
- Murmanskaya oblast (Lovozero)
- Tumenskaya oblast (Noyabrsk)
Brazil, Nicaragua, Indonesia and Australia will host each a station. There are plans to deploy two stations in Antarctica, namely in Bellingshausen and Novolazarevskaya, with potentially two more in Russkaya and Progress.[3]
The main central processing facility will be located in Moscow, and it will be complemented with a reserve facility.[3]
The uplink stations for the Luch 5A and 5B satellites will be deployed in Moscow as well, whilst the location of the one for Luch 5 has not been decided yet.[3]
In addition to the GEO broadcast, it is foreseen that SDCM provides internet and GSM broadcast from a SISNeT server and an NTRIP server.[3]
SDCM Space Segment
The system will also count with three geostationary satellites, which will be launched in the coming years. The InsideGNSS stated that they apparently will be an extension of the Luch communications satellite design ([...]manufactured by Reshetnev) introduced in the 1980s as part of the Soviet Union’s satellite data relay network.[2] The planned location of these three satellites is as follows:
- Luch-5A: 16 degrees west.
- Luch-5B: 95 degrees east.
- Luch-4: 167 degrees east.
SDCM Objectives and Performances
With this architecture the whole Russian Federation will be covered as the SDCM Service Area.[4]
- Sdcm overview.png
SDCM planned station network
The SDCM objectives are:[1]
- Integrity monitoring of GNSS satellites (GPS and GLONASS)
- Provide differential corrections to GLONASS satellites
- A posteriori detail analysis of GLONASS system performances.
The positioning performance provided by SDCM will be of 1 to 1.5 meters in the horizontal plane and of 2 to 3 meters in vertical. In addition, it is expected to offer a cm-level positioning service for users at a range of 200 kilometers of the reference stations.[2]
SDCM Near Future
SDCM is expected to be certified in the coming years, as an SBAS counterpart to GPS WAAS and the European EGNOS. The SDCM certification will represent just the first step in the SDCM strategy which pursues also other broadcast means –potentially a polar MEO– with the aim of providing also a service to the North part of Russia.
Notes
References
- ^ a b SDCM home page.
- ^ a b c Glen Gibbons, Russia Building Out GLONASS Monitoring Network, Augmentation System Inside GNSS News, September/October 2009
- ^ a b c d e f g System for Differential Correction and Monitoring Update, Sergey KARUTIN, Deputy head of division, Russian Space Systems, presented at ION GNSS 2011
- ^ Sergey Revnivykh (Russian Federal Space Agency), GLONASS Updates, Munich Satellite Navigation Congress, March 2011