GLONASS navigation system suffers outage
Posted: Thu, Apr 3, 2014, 8:47 AM ET (1247 GMT)
Russia's GLONASS satellite navigation system suffered an 11-hour outage on Wednesday, reportedly due to a technical glitch. The satellite network was broadcasting corrupted data from about 5 pm EDT Tuesday to 4 am EDT Wednesday (2100 GMT Tuesday to 0800 GMT Wednesday; 1 am to noon Moscow time Wednesday) that was rendering GLONASS receivers useless in calculating positions. According to one report, the problem started when inaccurate ephemerides, used by the satellites to determine their position in orbit, were uploaded to the spacecraft by controllers. The network has resumed normal service. GLONASS, a system similar to the American Global Positioning System (GPS), uses a constellation of satellites in medium Earth orbit to provide navigation services.
Russia's GLONASS satellite navigation system suffered an 11-hour outage on Wednesday, reportedly due to a technical glitch. The satellite network was broadcasting corrupted data from about 5 pm EDT Tuesday to 4 am EDT Wednesday (2100 GMT Tuesday to 0800 GMT Wednesday; 1 am to noon Moscow time Wednesday) that was rendering GLONASS receivers useless in calculating positions. According to one report, the problem started when inaccurate ephemerides, used by the satellites to determine their position in orbit, were uploaded to the spacecraft by controllers. The network has resumed normal service. GLONASS, a system similar to the American Global Positioning System (GPS), uses a constellation of satellites in medium Earth orbit to provide navigation services.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
China launches first Long March 12A, but booster landing fails
Posted: Sun, Dec 28 9:50 AM ET (1450 GMT) |
|
news links
|
|
Friday, January 2
Starlink is lowering thousands of satellites' orbits to reduce risk of collisions
Engadget — 8:33 am ET (1333 GMT) Europe Is Losing the Space Race. More Rules Won't Help
Bloomberg News — 8:33 am ET (1333 GMT) SpaceX will lower Starlink satellites to reduce collision risk
The Verge — 8:30 am ET (1330 GMT) SpaceX is moving thousands of Starlink satellites in orbit to reduce the chances of them colliding with rivals
Business Insider — 8:30 am ET (1330 GMT) China warns Elon Musk’s Starlink satellites pose ‘safety and security’ risk
The Independent — 8:28 am ET (1328 GMT) |
