It doesn't    It simply increases the risk that GPS will be made unavailable 
due to events outside the operators control    Hence system risk profile is 
high    

Was not so high when LORAN was available as aviation, maritime and timing 
applications could gracefully degrade to LORAN in the event GPS was unavailable

Now if GPS availability is denied we are back to maps bowdoins sextants and 
chronometers for navigation except for the vanishingly small number of ships 
and planes equipped with INS

Scott 


Sent from my iPhone

On Jul 30, 2013, at 1:28 PM, "Lester Veenstra" <les...@veenstras.com> wrote:

> Yes. LOS jamming of the civilian code is easy; However whey do you think the
> use of LEO aids this?
> 
>>> Any competent engineer could have told the powers that be that a 
>>> satellite system based in LEO has a relatively high risk profile from 
>>> the Universe/hostile activity/spoofing and jamming
> 
> 
> Lester B Veenstra  MØYCM K1YCM W8YCM
> les...@veenstras.com
> 
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> 
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