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GPS jamming trial: Is GLONASS affected?

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GPS jamming trial: Is GLONASS affected?

Old 5th Aug 2014, 17:54
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GPS jamming trial: Is GLONASS affected?

I am curious as to whether the GPS jamming trial in Sennybridge over the next couple of weeks (see AIC P 072/2014) will affect GLONASS receivers. Does anyone know?
The notam mentions "..Jammer transmissions centred around 1176.45 MHz (L5), 12270.60 MHz (L2) & 1575.42 MHz (L1)", which from a bit of googling, seem to represent GPS (Navstar) frequencies. GLONASS frequencies appear to be slightly different (L1 1598.0625 - 1609.3125 L2 1242.9375 - 1251.6875).
I was wondering since jamming trials that happen from time to time may represent an additional reason for upgrading to a dual GPS/GLONASS receiver, particularly since interference can allegedly be expected out to a considerable distance (75nm radius in the low power jamming test in this case). If this is a military trial (the location suggests that!) then it does seem a bit odd that they would only block GPS but not GLONASS. You could read all sorts of things into the political background to that
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Old 5th Aug 2014, 18:21
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Old 5th Aug 2014, 21:10
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then it does seem a bit odd that they would only block GPS but not GLONASS.
As the UK Military are only likely to use Navstar in the Militarty Mode, then any trials to test its susceptabiulity to jamming will be with the system they use.
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