First, I was surprised by the following sentence in the article:
"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." At the risk of displaying my ignorance, I had assumed that GLONASS, GPS, and other global positioning satellites were in geo-synchronous orbits. If so, they are fixed and don't pass over control stations at intervals. I profess no expertise in this area and would welcome clarifications and corrections from other, more knowledgeable members of this group.
Second, given the recent tensions in East-West relations over Ukraine, one could logically ask whether the ephemeris data was intentionally corrupted in order to render the GLONASS system dysfunctional.
Does the Russian military depend solely on GLONASS, or do they also use GPS?
From: FrankReed@HistoricalAtlas.com
To: jacksonmcdonald@hotmail.com
Date: Tue, 8 Apr 2014 15:02:17 -0700
Subject: [NavList] Glonass goes dark
http://gpsworld.com/glonass-gone-then-back/
Last week the entire GLONASS system (Russian GPS equivalent) transmitted corrupt data for about 12 hours. Details with a quote from Richard Langley at the link above.
-FER
----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------
: http://fer3.com/arc/m2.aspx?i=127499
