[time-nuts] Article in Metro (free London newspaper) about jamming GPS

[Larry Sampas]

GPS Jamming awareness increased last year when the FAA isssued a NOTAM for
GPS anomalies from DoD tests:
https://www.faasafety.gov/files/notices/2011/Jan/GPS_Flight_Advisory_CSFTL11-01_Rel.pdf

There's also an old article on a jamming event here:
http://www.newscientist.com/article/dn20202-gps
-chaos-how-a-30-box-can-jam-your-life.html

If you want to see the NTP server that some traders use, it's here:
http://www.fsmlabs.com/products

made by the folks who brought us RTLinux, one of the realtime Linux
distributions. (Warning: you may feel a compulsion to install realtime mods
to your linux kernel.)

Finally, inserting an extra second into trading clocks was also mentioned
in the movie, "The Grifters" in 1990.

Larry

On Wed, Feb 22, 2012 at 10:57 PM, Jim Lux <jimlux at earthlink.net> wrote:

> On 2/22/12 4:38 PM, Dr. David Kirkby wrote:
>
>> On the train this morning I picked up a copy of the Metro (there are
>> usually numerous copies on any train, as its free and does not take long
>> to read).
>>
>> There was an article about financial institutions being concerned about
>> the time of their clocks being purposely altered by GPS manipulation so
>> someone can gain a trading advantage. I guess if you can make London a
>> bit slow, then you can determine if stocks have risen/fallen on other
>> markets and chose to buy or sell based on that fact. I guess you would
>> need a few seconds if the decisions were made by humans, but perhaps
>> microseconds would be enough if the decisions were made by computer.
>>
>> I can't seem to find a copy of the article online.
>>
>> Funny thing is there was a fictional TV program a week or so ago where
>> criminals claimed to be delaying supposedly real-time data to gain an
>> advantage. But in fact they were not in the plot - they just told other
>> criminals this story.
>>
>>
> "The Sting"  Robert Redford and Paul Newman... a fine example of how a bit
> of time alteration/data delay can work.
>
>
>
>
>
>>
>
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