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

Chuck Forsberg WA7KGX caf at omen.com
Tue Jul 30 23:27:24 UTC 2013


Don't junk your ADF just yet.

On 07/30/2013 11:46 AM, Scott McGrath wrote:
> 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" <lester at 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
>> lester at veenstras.com
>>
>> US Postal Address:
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>> HC84 Box 89C
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>> GPS: 39.33675 N  78.9823527 W (Google)
>> GPS: 39.33682 N  78.9023741 W (GPSDO)
>>
>>
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-- 
      Chuck Forsberg WA7KGX   caf at omen.com   www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
   Omen Technology Inc      "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231   503-614-0430




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