[time-nuts] Spoofing GPS

J. Forster jfor at quikus.com
Wed Jun 27 03:16:55 UTC 2012


The smaller path loss from the ground to a UAV v. UAV to satellite easily
trumps the front/back ratio of most all antennas.

-John

=============




> On 6/26/12 4:42 PM, J. Forster wrote:
>> IMO, your failure rate estimate does not include the probability that
>> some
>> people might not like being spied on by UAVs.
>>
>> I can easily see a market for ground based GPS jammers, especially, in
>> the
>> more rugged, fertile, and inaccessible areas of California.
>
>
> The GPS antennas on the UAVs face up, and have a (not very deep) null
> facing down, so those rustic farmers are going to need a fair amount of
> power facing up...
>
> (and besides, why do it outside, when you can inexpensively rent large
> industrial concrete tilt-up buildings with water, heavy power, and a
> loading dock..)
>
> And, as far as remote sensing goes.. commercial overhead imagery from
> aerial photo and satellites (SPOTimage, etc) is sufficiently good to
> detect this kind of thing (as well as things like unpermitted swimming
> pools on which property tax is not being paid).
>
>
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