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.[1] It uses the Luch Multifunctional Space Relay System to transmit correction data.[2]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/46/SBAS_Service_Areas.png/220px-SBAS_Service_Areas.png)
SDCM's service area covers the Russian Federation. As of 2021[update] it had not yet been certified for use for public aviation.[3]
References
External links
- Design summary for SDCM, 2012