GLONASS Loses Control Again

The GLONASS constellation has suffered a major problem for the second time this month.

On Monday, April 14, eight GLONASS satellites were simultaneously set unhealthy for about half an hour, meaning that most GLONASS or multi-constellation receivers would have ignored those satellites in positioning computations. In addition, one other satellite in the fleet was out of commission undergoing maintenance. This might have left too few healthy satellites to compute GLONASS-only receiver positions in some locations.

The unhealthy status of the satellites was noted in the monitoring information provided by the Roscosmos GLONASS Information-Analytical Centre website. The problem was also reported by The Moscow Times, an English-language daily published in Russia.

원문 : http://gpsworld.com/glonass-loses-control-again/