The GLONASS system temporarily ceased to provide corrective information via the satellite communication channel. This is stated in a message on the website of the Russian system of differential correction and monitoring (SDCM) for April 14.
It is noted that the failure is associated with "power failures at the location of the bookmark and control complex."
GLONASS is a dual-use navigation system. It is used in high-precision weapons, in addition, for navigating and locating units.
http:// www.rosbalt.ru/russia/2018/04/16/1696253.html