Engineering:System for Differential Corrections and Monitoring

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Short description: Russian satellite navigation augmentation system
SDCM service area

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]

SDCM's service area covers the Russian Federation. (As of 2021) it had not yet been certified for use for public aviation.[3]

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