If you wish to contribute or participate in the discussions about articles you are invited to contact the Editor
SDCM
| Other SBAS | |
|---|---|
| Title | SDCM |
| Edited by | 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 SDCM 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]
- Sdcm overview.png
SDCM planned station network
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 SDCM Space Segment will be composed of 3+1 GEO satellites:[3]
| Satellite | Location | Launch | Lifespan |
|---|---|---|---|
| Luch-5A | 16 deg West | late 2011 | 10 years |
| Luch-5B | 95 deg East | 2012 | 10 years |
| Luch-5 | 167 deg East | 2013/2014 | 10/15 years |
| Luch-4 | 2016 |
SDCM Objectives and Performances
With this architecture the whole Russian Federation will be covered as the SDCM Service Area.[4]
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]
Notes
References
- ^ a b SDCM home page.
- ^ a b Glen Gibbons, Russia Building Out GLONASS Monitoring Network, Augmentation System Inside GNSS News, September/October 2009
- ^ a b c d e f g h i 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