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In the UK the armed forces regularly practice jamming of satellite
navigation (not just GPS, it jams GLONASS too) . Sometimes as part of
a NATO exercise. I understand it is done from an aircraft

http://stakeholders.ofcom.org.uk/spectrum/gps-jamming-exercises/260416

The Royal Navy, and all other shipping in the usually remote area has
to fall back to using other methods of navigation. This is coastal
navigation though so they would fall back to using Radar I presume.

Bill

On 4 May 2016 at 05:28, Brad Morris  wrote:
> Hello Jackson
>
> In order to jam, you must transmit on the same frequency, with enough power
> to significantly downgrade your opponent's ability to position find. In the
> event of military conflict, the location of those jamming transmitters will
> be swiftly found through RDF (if not already known today) and expunged with
> a few well placed missiles.  End of jamming.  If the transmitters are
> mobile, it might take a little longer, but the transmitters are basically
> saying "Here I am!"
>
> Right now the GPS jamming is a local inconvenience.  More petty nonsense
> from a tyrant
>
> Brad
>
> On May 3, 2016 7:25 PM, "Jackson McDonald" 
> wrote:
>>
>> Intentional GPS jamming.
>>
>>
>> https://gcaptain.com/south-korea-revives-gps-backup-project-after-blaming-north-for-jamming/
>>
>> 
>
> 



--
Professor of Applied Mathematics
http://www.maths.manchester.ac.uk/bl

   

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