SDKM

SDKM (also SDCM, Russian система дифференциальной коррекции и мониторинга , "system for differential correction and monitoring") is the Russian Satellite Based Augmentation System (SBAS) for the territory of Russia. A large part of the necessary ground infrastructure already existed before 2010. The first of the required communications satellites was launched in 2012.

GLONASS and GPS signals are received at up to 20 reference stations in Russia and six other stations outside of Russia. The correction signals are transmitted to the navigation devices in a format compatible with the other SBAS systems via three geostationary satellites ( Lutsch -5A, -5B and -5W) . This can significantly increase the accuracy and integrity of the GNSS position determination.

The SDKM data streams are transmitted via Lutsch-5A (location above the equator at 167 degrees east, satellite launch on December 11, 2011, PRN 125) in the Pacific region and Australia, via Lutsch-5B (16 degrees west, satellite launch November 2, 2012 , PRN 140) in Europe, the Atlantic, South America and Africa and via Lutsch-5W (95 degrees East, satellite launch April 28, 2014, PRN 141) in Asia, the Indian Ocean and Australia.

Web links

• SDKM system website (Russian / English)
• GLONASS Modernization. November 16, 2011, archived from the original on April 18, 2013 .