[time-nuts] Story in the Economist about GPS jamming

[Magnus Danielson]

On 30/07/13 16:03, J. Forster wrote:
> I think the largest concern about jamming is for civilian uses, rather
> than military, mainly because military receivers are designed and built to
> be more immune. Also, military systems are far more likely to have good
> grade INS.
>
> Furthermore, there are probably a couple of orders of magnitude more
> civilian systems in use.

The military receivers have not only better resistance than the average 
civilian, but also enjoy the access to the PPS service, i.e. the keyed 
signals which has greater capability in surpressing jamming signals. 
With modern receivers even having the capability to lock directly into 
the P(Y) signal without use of the much more vulnerable C/A code which 
is the traditional way of locking into P(Y).

Cheers,
Magnus