[time-nuts] Story in the Economist about GPS jamming
Scott McGrath
scmcgrath at gmail.com
Tue Jul 30 12:11:28 EDT 2013
The atmosphere protects the earth from a lot of stuff the universe throws at us
Solar flares , space junk , micrometeors just the usual hazards the space at large has. Inability to service satellites when transmitters or RCS fuel exhausted
Sent from my iPhone
On Jul 30, 2013, at 9:31 AM, "Lester Veenstra" <lester at veenstras.com> wrote:
> Exactly what do you mean by "... based in LEO has a relatively high risk
> profile from the Universe/hostile activity/spoofing and jamming..."?
>
> Other than a LOS, in a jammers immediate area, GPS is not subject to
> jamming, and for the critical users, ie, the DOD, very difficult to jam,
> even in a LOS.
>
> The LEO makes it harder to jam since the received signal strength is higher
> than would be practical from GeoSync orbit, not easier, as is implied my
> Mr. McGraths comment.
>
> Lester B Veenstra MØYCM K1YCM W8YCM
> lester at veenstras.com
>
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