[ntp:questions] ANN: UK GPS jamming exercises 10-21 July 2011

David J Taylor david-taylor at blueyonder.co.uk.invalid
Thu Mar 17 16:57:40 UTC 2011


I have received the following announcement:

The MoD has informed Ofcom of the following GPS jamming exercise:

Dates: Jamming will be conducted on a maximum of 3 week-days in the period 
10-21 July 2011.Times: 0900 -1730 BST.

Location: Jamming aircraft will orbit at 10,000ft above mean sea-level 
(AMSL) along a 50nm flightpath on a heading of 270°T from Kirkwall, 
starting 10nm to the west of Kirkwall and ending 60nm to the west of 

Possible areas affected: The GPS jamming is likely to affect civilian 
Standard Positioning Service (SPS) receivers over a large area. A minimum 
jammer to signal vulnerability of 30dB has been assumed for a civilian 
receiver.  Signal theory suggests that a SPS civilian receiver should have 
approximately 32dB of jamming resistance.

Safety of Life Operations: Safety of life operations will take precedence 
over exercise activities at all times.  To this end, the AWC is open to 
further discussion with any official recipient on the potential 
implications of this jamming exercise.

(Contact telephone numbers removed)


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