俄罗斯GLONASS卫星导航系统遭遇长达10小时系统运营故障

GPS World： GLONASS Gone . . . Then Back
In an unprecedented total disruption of a fully operational GNSS constellation, all satellites in the Russian GLONASS broadcast corrupt information for 11 hours, from just past midnight until noon Russian time (UTC+4), on April 2 (or 5 p.m. on April 1 to 4 a.m. April 2, U.S. Eastern time). This rendered the system completely unusable to all worldwide GLONASS receivers. Full and correct service has now been restored.
“Bad ephemerides were uploaded to satellites. Those bad ephemerides became active at 1:00 am Moscow time,” reported one knowledgeable source. For every GNSS in orbit, the navigation messages includeephemeris data, used to calculate the position of each satellite in orbit, and information about the time and status of the entire satellite constellation (almanac); this data is processed by user receivers on the ground to compute their precise position.
According to another source, a GLONASS fix could not take effect until each satellite in turn passed back over  control stations in the Northern Hemisphere to be reset, thus taking nearly 12 hours.
During the outage, one U.S.-based GNSS high-precision manufacturer reported “We are currently experiencing calls from customers all over the world who are experiencing GLONASS “outages” and we have advised customers to switch GLONASS tracking off on our receivers. We don’t have any better information on when normal service is likely to resume from GLONASS satellites. If you do, let me know!”
Such a — possibly human, possibly computer-generated — error could conceivably occur with GPS, Galileo, or BeiDou. “Another reason to have backups,” mused Richard Langley of the University of New Brunswick. “And not just other GNSS.”

http://gpsworld.com/glonass-gone-then-back/

GOOGLE无节操翻译版：

GPS世界： GLONASS飘。 。 。然后返回
在一个全面运作的全球导航卫星系统星座前所未有总中断，在俄罗斯的GLONASS卫星全部播出腐败信息11小时，从刚刚过去的午夜到中午俄罗斯时间（ UTC +3 ） ， 4月2日（或下午5时4月1日上午04点4月2日，美国东部时间） 。这个渲染系统完全无法使用到全球所有的GLONASS接收器。充分和正确的服务现已恢复。
“坏星历表被上传到卫星。那些糟糕的星历在凌晨1:00莫斯科时间开始活跃起来， “报道1知情人士。对于每一个全球导航卫星系统在轨道上，导航消息includeephemeris数据，用于计算在每个轨道上的卫星的位置，和关于时间和整个卫星星座（历书）的状态信息;此数据由地面上的用户接收处理，以计算它们的精确位置。
另据源， GLONASS定位不能生效，直到每颗卫星又传回了控制站在北半球进行复位，从而占据了近12个小时。
在停电，一是美国的全球导航卫星系统的高精度制造商报道：“我们正在经历谁遇到格洛纳斯客户来电世界各地的”中断“ ，而我们已告知客户转格洛纳斯对我们的接收机跟踪关。我们并没有就当正常的服务很可能从GLONASS卫星恢复任何更好的信息。如果你这样做，让我知道！ “
可以想见，发生误差与GPS，伽利略或北斗 - 这样的 - 可能是人，可能是计算机产生的。 “另一个原因有备份， ”沉思新不伦瑞克大学的理查德·兰利。 “而且不只是其他全球导航卫星系统。 ”

http://bbs.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=13377&pid=299299&fromuid=24484

GPS World： GLONASS Gone . . . Then Back
In an unprecedented total disruption of a fully operational GNSS constellation, all satellites in the Russian GLONASS broadcast corrupt information for 11 hours, from just past midnight until noon Russian time (UTC+4), on April 2 (or 5 p.m. on April 1 to 4 a.m. April 2, U.S. Eastern time). This rendered the system completely unusable to all worldwide GLONASS receivers. Full and correct service has now been restored.
“Bad ephemerides were uploaded to satellites. Those bad ephemerides became active at 1:00 am Moscow time,” reported one knowledgeable source. For every GNSS in orbit, the navigation messages includeephemeris data, used to calculate the position of each satellite in orbit, and information about the time and status of the entire satellite constellation (almanac); this data is processed by user receivers on the ground to compute their precise position.
According to another source, a GLONASS fix could not take effect until each satellite in turn passed back over  control stations in the Northern Hemisphere to be reset, thus taking nearly 12 hours.
During the outage, one U.S.-based GNSS high-precision manufacturer reported “We are currently experiencing calls from customers all over the world who are experiencing GLONASS “outages” and we have advised customers to switch GLONASS tracking off on our receivers. We don’t have any better information on when normal service is likely to resume from GLONASS satellites. If you do, let me know!”
Such a — possibly human, possibly computer-generated — error could conceivably occur with GPS, Galileo, or BeiDou. “Another reason to have backups,” mused Richard Langley of the University of New Brunswick. “And not just other GNSS.”

http://gpsworld.com/glonass-gone-then-back/

GOOGLE无节操翻译版：

GPS世界： GLONASS飘。 。 。然后返回
在一个全面运作的全球导航卫星系统星座前所未有总中断，在俄罗斯的GLONASS卫星全部播出腐败信息11小时，从刚刚过去的午夜到中午俄罗斯时间（ UTC +3 ） ， 4月2日（或下午5时4月1日上午04点4月2日，美国东部时间） 。这个渲染系统完全无法使用到全球所有的GLONASS接收器。充分和正确的服务现已恢复。
“坏星历表被上传到卫星。那些糟糕的星历在凌晨1:00莫斯科时间开始活跃起来， “报道1知情人士。对于每一个全球导航卫星系统在轨道上，导航消息includeephemeris数据，用于计算在每个轨道上的卫星的位置，和关于时间和整个卫星星座（历书）的状态信息;此数据由地面上的用户接收处理，以计算它们的精确位置。
另据源， GLONASS定位不能生效，直到每颗卫星又传回了控制站在北半球进行复位，从而占据了近12个小时。
在停电，一是美国的全球导航卫星系统的高精度制造商报道：“我们正在经历谁遇到格洛纳斯客户来电世界各地的”中断“ ，而我们已告知客户转格洛纳斯对我们的接收机跟踪关。我们并没有就当正常的服务很可能从GLONASS卫星恢复任何更好的信息。如果你这样做，让我知道！ “
可以想见，发生误差与GPS，伽利略或北斗 - 这样的 - 可能是人，可能是计算机产生的。 “另一个原因有备份， ”沉思新不伦瑞克大学的理查德·兰利。 “而且不只是其他全球导航卫星系统。 ”

http://bbs.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=13377&pid=299299&fromuid=24484